BIOLOGY TEST Marks: 360

ANSWER KEY

Botany

Q.1 D Q.2 D Q.3 B Q.4 C Q.5 D Q.6 C Q.7 D Q.8 A

Q.9 C Q.10 D Q.11 C Q.12 D Q.13 A Q.14 C Q.15 B Q.16 B

Q.17 A Q.18 C Q.19 B Q.20 C Q.21 B Q.22 C Q.23 C Q.24 A

Q.25 D Q.26 B Q.27 C Q.28 C Q.29 B Q.30 C Q.31 B Q.32 D

Q.33 A Q.34 B Q.35 B Q.36 C Q.37 B Q.38 C Q.39 A Q.40 D

Q.41 B Q.42 A Q.43 B Q.44 A Q.45 C Q.46 A Q.47 B Q.48 C

Zoology

Q.49 A Q.50 A Q.51 C Q.52 A Q.53 B Q.54 A Q.55 A Q.56 A

Q.57 D Q.58 B Q.59 A Q.60 C Q.61 C Q.62 A Q.63 C Q.64 A

Q.65 C Q.66 C Q.67 A Q.68 A Q.69 D Q.70 A Q.71 A Q.72 B

Q.73 C Q.74 A Q.75 D Q.76 B Q.77 D Q.78 A Q.79 C Q.80 A

Q.81 D Q.82 B Q.83 C Q.84 B Q.85 C Q.86 B Q.87 D Q.88 A

Q.89 C Q.90 B

Page 1 of 12
 SOLUTION

Botany
Q.1 Which of the following statements are Reason: Each taxonomic group should
INCORRECT? have two names.
a. Pteridophytes along with lichens are Correct option: (C)
the first to colonise rocks. The system of providing a scientific name to any
b. In Cycas, the pinnate leaves persists for organism is indeed called binomial nomenclature.
few years. This is the standard naming system used in
c. Some algae may store food in the form biology, and it is based on two names: the genus
of oil droplets. and the species. However, the reason provided is
d. Roots of Pinus have fungal association incorrect. Each taxonomic group does not
in the form of Lichens. necessarily need to have two names. The binomial
Correct option: (D) nomenclature system only applies to the scientific
a. Mosses along with lichens are the first to names of individual species. Other taxonomic
colonise rocks. groups, such as families, orders, classes, phyla, and
b. Roots of Pinus have fungal association in the kingdoms, have their own names that are not
form of mycorrhiza. restricted to two words. Therefore, the assertion is
true, but the reason is false.
Q.2 _______, provides peat which has been
used as fuel since a long time. Q.5 Who gave the nomenclature according to
Correct option: (D) which humans are called Homo sapiens?
Sphagnum moss is known for its ability to form Correct option: (D)
peat, a partially decayed plant matter that has been Linnaeus is credited with establishing the
used as a fuel source for centuries. It's a common binomial nomenclature system, which is used to
type of moss found in bogs and other wet scientifically name organisms. This system gives
environments, and its unique properties make it each species a two-part name, consisting of the
well-suited for peat formation. genus and species. Humans are classified as Homo
sapiens under this system, meaning that Linnaeus
Q.3 _______ covers the largest number of
organisms. gave us this scientific name.
Correct option: (B) Q.6 Mosses are important for all the reasons
The Kingdom is the largest taxonomic rank, given below, except
encompassing all organisms sharing fundamental Correct option: (C)
characteristics. It encompasses a vast diversity of Mosses form dense mats on soil, thus reduce the
life, including animals, plants, fungi, bacteria, and impact of falling rain and prevent soil erosion.
archaea. Each Kingdom is further divided into
Q.7 Select the MISMATCHED pair from the
smaller groups, such as Phylum, Class, Order,
following.
Family, Genus, and Species, with each subsequent Correct option: (D)
rank becoming more specific. Since the Kingdom
Protonema of mosses multiplies by fragmentation.
level is the broadest, it naturally includes the
Q.8 Which of the following taxonomical ranks
largest number of organisms.
contain organisms, least similar to one
Q.4 Assertion: The system of providing a another?
scientific name to any organism is called Correct option: (A)
binomial nomenclature.
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Smart tip : tissues.
Taxonomic categories showing hierarchical v. Selaginella and Salvinia produce
arrangement in descending order / Similarities microspores which germinate to give rise
between organisms increase in this order: to male gametophyte.
KINGDOM→ PHYLUM → CLASS → The CORRECT statements are:
ORDER→FAMILY → GENUS → SPECIES Correct option: (D)
Q.9 Strobili or cones are found in: i. Pteridophytes include horsetails and ferns.
ii. In pteridophytes, the main plant body is diploid
Correct option: (C)
sporophyte.
Strobili, also known as cones, are reproductive iv. Pteridophytes are first terrestrial plants to
possess vascular tissues. Bryophytes are called
structures found in some vascular plants,
amphibians of plant kingdom.
particularly in gymnosperms like conifers and
ferns.
Among the given options, Equisetum is a genus of
ferns that are commonly called horsetails. They
produce strobili at the tips of their stems, which Q.13 Organisms with least similar characters,
contain sporangia that produce spores. segregate under which of the following
Pteris is a genus of ferns, but they do not have taxonomical rank?
strobili. Correct option: (A)
Marchantia and Salvinia are both liverworts, Smart tip – 2: Taxonomic Categories showing
which are non-vascular plants and do not produce hierarchical arrangement (descending order) /
strobili. Similarities between organisms increase in this
Therefore, the correct answer is Equisetum. order:
Q.10 Winged pollen grains are present in KINGDOM → PHYLUM → CLASS →
ORDER→ FAMILY → GENUS → SPECIES
[2018]
Correct option: (D) Pinus Q.14 The serial arrangement of taxon is
Self Explanatory known as
Correct option: (C) Hierarchy
Q.11 Complete the analogy.
Self Explanatory
Liverworts : Bryophytes :: Horsetails :
_______ Q.15 In binomial nomenclature, name of an
Correct option: (C) animal consists of _______.
The analogy is based on plant classifications. Correct option: (B)
Liverworts are a type of Bryophyte, which are non- The binomial nomenclature system uses two
vascular plants. Similarly, Horsetails are a type of epithets to name an organism. The first epithet is
Pteridophyte, which are vascular plants. the genus, which is a broader group of related
organisms. The second epithet is the specific
Q.12 Consider the following statements
epithet, which identifies a particular species within
about pteridophytes.
i. Pteridophytes include horsetails and that genus. For example, the scientific name for
humans is Homo sapiens. Homo is the genus and
liverworts.
sapiens is the specific epithet.
ii. The main plant body is haploid
sporophyte. Q.16 Which of the following is WRONG with
iii. They are used for medicinal purposes, respect to sporophyte of pteridophytes?
also as ornamentals. Correct option: (B)
iv. They are called as amphibians of In pteridophytes, sporophyte is dominant,
plant kingdom possessing vascular independent and photosynthetic.
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Q.17 In which of the following the common megaspore mother cell. So both statements are
characteristics go on decreasing? true.
Correct option: (A)
Q.21 Match Column-I with Column-II for
Smart tip – 2:
housefly classification and select the
Taxonomic Categories showing hierarchical
correct option using the codes given
arrangement (descending order) / Similarities
below:
between organisms increase in this order:
KINGDOM → PHYLUM → CLASS →
ORDER→ FAMILY → GENUS → SPECIES

[NEET P-II 2016]

Correct option: (B)
Q.18 Which of the following statement is
TRUE?
Correct option: (C)
Q.22 Rhodophyceae is red coloured due to
In plants, growth by cell division occurs
Correct option: (C)
continuously throughout their life span, while in
Rhodophyceae, commonly known as red algae, are
animals, this growth is seen only upto a certain
red due to the presence of the pigment r-
age.
phycoerythrin. This pigment absorbs blue light,
Q.19 The flask shaped female sex organ of which is most abundant in deeper waters where red
bryophytes is algae thrive. The absorption of blue light gives red
Correct option: (B) algae their characteristic red color.
Q.23 Which of the following statements is
The archegonium is the flask-shaped female sex
true?
organ of bryophytes. It is responsible for
Correct option: (C)
producing the egg cell. The antheridium is the
i. Most algal genera are haplontic.
male sex organ, which produces sperm. The
ii. Most bryophytes exhibit haplo-diplontic life
protonema is a thread-like structure that develops
cycle.
from a bryophyte spore. The oogonium is the
iii. Angiosperms follow diplontic life cycle pattern.
female sex organ in certain algae and fungi.
Q.24 The prothallus represents
Q.20 Read the following statements and select
Correct option: (A)
the appropriate answer from the
Gametophyte of fern is exosporic, flat, green,
conclusions.
autotrophic, cordate (heart shaped), multicellular,
Statement I: In Pinus, microsporangia
short lived, small reduced, dorsiventral, free living
contain pollen grains.
independent, nonvascular gametophyte called
Statement II: In Pinus, megaspore
prothallus.
mother cell is differentiated from one of
the cells of nucellus. Q.25 Arrange the following points according
Conclusions: to the pattern for alternation of
Correct option: (C) generation.
Both statements are true. In Pinus, microsporangia i. Haploid plant body (gametophyte)
are present inside the pollen sacs. Pollen grains are produces gametes by mitosis.
formed inside the microsporangia. Megaspore ii. Zygote undergoes mitosis to produce
mother cell is differentiated from a cell of nucellus. diploid sporophyte.
The nucellus is a tissue that surrounds the iii. Haploid spores divide by mitosis and
produces haploid plant body by mitosis.
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 iv. Haploid spores are produced by the Hominidae family (great apes). Genus: A group
meiosis. of closely related species. Within the Hominidae
Correct option: (D) i → ii → iv → iii family, we have the genus Homo. Species: The
Self Explanatory most specific level, referring to a group of
organisms that can interbreed and produce fertile
Q.26 Match the following and choose the
offspring. Within the Homo genus, there's the
correct option. [NCERT Exemplar]
species Homo sapiens (humans). This hierarchical
structure helps scientists organize and understand
the diversity of life on Earth.

Q.28 Following are the steps for the processes

that are basic to taxonomy. Arrange the
Correct option: (B) i – e, ii – d, iii – b, iv
steps and opt for appropriate answer.
– a, v – c
i. Classification ii. Identification
iii. Characterisation iv. Nomenclature
Correct option: (C)
Q.27 In the taxonomic categories which
The correct order for the processes basic to
hierarchical arrangement in ascending
taxonomy is: iii. Characterisation - Organisms are
order is correct in case of animals?
first studied and their characteristics are noted. ii.
Correct option: (C)
Identification - Using these characteristics, the
The correct hierarchical arrangement in ascending
organism is identified as belonging to a particular
order for taxonomic categories in the case of
group. i. Classification - Based on identification,
animals is Kingdom, Phylum, Class, Order,
organisms are then classified into a hierarchical
Family, Genus, Species. This arrangement
system. iv. Nomenclature - Finally, a name is given
represents the increasing specificity of the groups, to the organism according to the established rules
with Kingdom being the broadest category
of nomenclature.
encompassing all animals and Species being the
Q.29 The correct sequence of taxonomic
most specific, referring to a particular type of
hierarchy is [KCET 2018]
animal.
Correct option: (B) Species → Genus →
This arrangement is based on the Linnaean
Family → Order → Class → Phylum →
classification system, which is a hierarchical
Kingdom
system for classifying organisms based on their
Smart tip :
shared characteristics. Let's break down the levels:
Taxonomic categories showing hierarchical
Kingdom: The highest level, encompassing all
arrangement in descending order / Similarities
living things. For animals, it's the Animalia
between organisms increase in this order:
kingdom. Phylum: A major division within a
KINGDOM→ PHYLUM → CLASS →
Kingdom. Animals are further divided into phyla,
ORDER→FAMILY → GENUS → SPECIES
like Chordata (animals with backbones),
Arthropoda (insects, crustaceans), and Mollusca Q.30 Read the given statements.
(snails, clams). Class: A subdivision within a i. These plants are unicellular, rich in
Phylum. For example, within the Chordata proteins and are used as food
phylum, there's the class Mammalia (mammals). supplements by space travellers.
Order: A group of closely related families within a ii. These plants are used as packing
Class. An example within Mammalia is the order material for trans–shipment of living
Primates (monkeys, apes, humans). Family: A material because of their capacity to
group of closely related genera within an Order. hold water.
For example, within the Primates order, we have

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 The above statements (i and ii) refer to Selaginella is a member of the Lycopsida class,
plants _______ and _______ respectively. which is a group of vascular plants that are
Correct option: (C) characterized by their small, scale-like leaves and
The correct answer is Chlorella, Moss because: their sporophyte generation being dominant.
Chlorella is a unicellular green alga rich in protein Equisetum, on the other hand, belongs to the
and is used as a food supplement for space Sphenopsida class, a group of vascular plants that
travelers. Moss is used as packing material for the have jointed stems and whorls of leaves.
transport of living material due to its ability to Q.35 The correct sequence of taxonomic
retain water.
hierarchy is
Q.31 Find the ODD one out based on the Correct option: (B)
characteristics of living organisms. Smart tip:
Correct option: (B) Taxonomic Categories showing hierarchical
Mules, sterile worker bees, infertile human couples arrangement (descending order) / Similarities
do not reproduce. between organisms increase in this order:
KINGDOM → PHYLUM → CLASS →
Q.32 All the given statements describes
ORDER→ FAMILY → GENUS → SPECIES
similarities between algae and
bryophytes, except
Correct option: (D)
Smart tip :
Q.36 Assertion: As we explore different areas,
Similarities between Algae and Bryophytes
new organisms are being identified.
i. Thalloid in nature
Reason: Vernacular names are chosen
ii. Vascular tissues like xylem and phloem are
for nomenclature of newly found
absent.
organisms.
iii. Gametophytic phase is the dominant phase in
Correct option: (C)
the life cycle.
As new organisms are identified, they are
iv. Water is needed for fertilisation.
classified according to binomial nomenclature.
v. Absence of roots (absence of roots in algae and
lack of true roots in bryophytes). Q.37 In mosses antheridia are produced at
vi. Reserve food material is carbohydrates. Correct option: (B)
Antheridia are the male reproductive structures in
Q.33 Opt for the appropriate way of writing
mosses. They develop on the leafy stage of the
biological name from below.
moss life cycle, which is the dominant stage. The
Correct option: (A)
leafy stage is the familiar, green, photosynthetic
Self Explanatory!
form of the moss that we typically see. This stage
Q.34 arises from the protonema, a thread-like structure
that develops from the moss spore.

Q.38 Gymnosperms are known as naked

seeded plants because
Identify Fig. 1 and Fig. 2 correctly and Correct option: (C)
select the option which gives correct Gymnosperms are known as naked seeded plants
difference between these two plants. because their seeds are not enclosed in an ovary
Correct option: (B) wall. This is because gymnosperms don't have
Fig. 1: Selaginella, Fig. 2: Equisetum. flowers or fruits, so their seeds are exposed on the
Selaginella belongs to class Lycopsida, whereas surface of cones or scales.
Equisetum belongs to class Sphenopsida.

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Q.39 Lowest category in the hierarchical i. Defining properties: Metabolism, cellular
system of classification is _______. organization, consciousness.
Correct option: (A) ii. Non-defining properties: Reproduction,
Smart tip : growth.
Taxonomic categories showing hierarchical Consciousness is a defining property of living
arrangement in descending order / Similarities organisms.
between organisms increase in this order:
Q.44 Microphylls are found in
KINGDOM→ PHYLUM → CLASS →
Correct option: (A)
ORDER→FAMILY → GENUS → SPECIES
Microphylls are small, simple leaves with a single,
Q.40 In oogamy, fertilisation involves unbranched vein. They are found in Selaginella, a
Correct option: (D) genus of vascular plants. The other options are not
Oogamy is the most advanced type of reproduction characterized by microphylls. Adiantum, Pteris,
in which male gamete (antherozoid) is motile, and Dryopteris all have larger, more complex
smaller and non-food storing while female gamete leaves with branched veins, known as megaphylls.
(oogonium) is food storing, non-motile and larger.
Q.45 The serial arrangement of taxon is
Q.41 Match the Column-I with Column-II known as
for housefly classification and select the Correct option: (C) Hierarchy
correct option using the codes given Self Explanatory
below:
Q.46 Read the following statements and select
Column I Column II
the correct options among the
i. Family a. Diptera
conclusions.
ii. Order b. Arthropoda
Statement I: Selaginella is
iii. Class c. Muscidae
heterosporous.
iv. Phylum d. Insecta
Statement II: Salvinia produces similar
kinds of spores.
Correct option: (B)
Conclusions:
Correct option: (A)
Q.42 Gemmae are present in Salvinia is heterosporous and produce two kinds of
Correct option: (A) spores.
Gemmae are specialized structures for vegetative
Q.47 Bryophytes have thallus plant body but
reproduction in some liverworts. They are
they are not included under algae
multicellular, asexual propagules that develop in
because of
special cups called gemma cups on the thallus of
Correct option: (B)
liverworts. These gemmae detach from the parent
Bryophytes are not included under algae because
plant and can develop into new individuals, thus
they exhibit multicellular sex organs and
helping in the vegetative propagation of liverworts.
sporophytes, unlike algae which are mostly
Q.43 Which of the following statements unicellular. They also possess a terrestrial habitat,
represents the defining property of living unlike algae which are predominantly aquatic.
organisms? Additionally, Bryophytes have a thallus plant body,
Correct option: (B) Plants respond to which is a simple, undifferentiated body structure.
external factors such as light, The other options are not the primary reasons for
temperature, water etc. excluding bryophytes from algae. So, the correct
Smart tip – 1: Characteristics of life can be option is terrestrial habitat, multicellular sex
categorized into two: organs and multicellular sporophytes.

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Q.48 Which of the following ‘suffixes’ used for Smart tip :
units of classification in plants indicates Name of the family usually ends with “idae” in
a taxonomic category of ‘Family’? animals and “aceae” in plants.
Correct option: (C)

Zoology
Q.49 Assertion: Euglenoids have a flexible Q.52 The comma shaped bacterium is called
body. as
Reason: They have a protein rich layer Correct option: (A)
called pellicle, which makes their body The Vibrio bacteria are comma-shaped. So the
flexible. answer is Vibrium.
Which of the following is true? [TS
Q.53 Which of the following is NOT related to
EAMCET 2018]
Coelenterates?
Correct option: (A) Both assertion and
Correct option: (B)
reason are true and reason is the correct
Presence of choanocytes (collar cells) is a
explanation of assertion.
characteristic feature of phylum Porifera.
Self Explanatory
Q.54 Which one of the following groups of
Q.50 Identify the red dinoflagellate from the
three animals each is correctly matched
following.
with their one characteristic
Correct option: (A)
morphological feature?
Gonyaulax is a genus of dinoflagellates known for
Correct option: (A)
causing red tides. These blooms can be harmful to
Metameric segmentation occurs in
marine life and humans due to the production of
arthropods, annelids and chordates. Taenia is a
toxins. The other options are not dinoflagellates:
Platyhelminth and does not possess metameric
Agaricus are mushrooms (fungi).
segmentation.
Euglena are single-celled organisms but are not
Liver fluke – Bilateral symmetry; Sea
dinoflagellates.
anemone, Sea cucumber – Radial symmetry; Culex
Trypanosoma are parasitic protozoans.
– Jointed appendages. Jointed appendages occur in
Q.51 Read the following statements and arthropods.
choose the correct option.
Q.55 Select the INCORRECTLY matched
i. Annelids lack well developed neural
pair.
system. Correct option: (A)
ii. Complete alimentary canal in form of
Gregarious Pest – Locusta
muscular pharynx is present in
Laccifer is the lac insect.
Aschelminthes.
Q.56 Identify the vertebrate group of animals
iii. Endoparasitic members of
characterized by crop and gizzard in its
Platyhelminthes possess hooks or
digestive system
suckers for attachment to host.
Correct option: (A)
iv. In ctenophores, flagellated comb
The digestive tract of Aves has crop and Gizzard in
plates help in excretion.
their digestive system.
Correct option: (C)
Crop is associated with storage of food
i. Nervous system of annelids consists of paired
grains and Gizzard is used to crush food grain.
ganglia and nerve chord.
iv. In ctenophores, ciliated comb plates help in Q.57 Complete the analogy with respect to
locomotion. members of various classes in kingdom
Page 8 of 12
 fungi. Self Explanatory
Ascomycetes : Neurospora ::
Q.63 Read the following statements and select
Phycomycetes : _______
the correct option.
Correct option: (D)
Statement I: Fishes are poikilothermic.
Statement II: Cartilaginous fishes have
placoid scales.
Correct option: (C)
Smart tips 1 :
Key differences between Chondrichthyes and
Osteichthyes:

Yeast – Ascomycetes;
Puffballs – Basidiomycetes;
Trichoderma – Deuteromycetes

Q.58 Match the Column I (Common name of

Smart tips 2 :
animals) with Column II (Scientific
Fishes (Chondrichthyes and Osteichthyes),
name) and select the correct option.
Amphibians, Reptiles are poikilothermic whereas
Column I Column II
Aves (birds) and Mammals are homeothermic.
i. Pearl oyster a. Ancylostoma
ii. Hookworm b. Pinctada Q.64 Notochord is present throughout the life
iii. Dog fish c. Scoliodon in
iv. Tortoise d. Balaenoptera Correct option: (A)
e. Testudo Notochord is present throughout the life in
Cephalochordates. Amphioxus is a
Correct option: (B) Cephalochordate.

Q.65 Which one of the followings statements is

Q.59 Sensory tentacles are present in INCORRECT? [NCERT Exemplar]
Correct option: (A) Correct option: (C)
Cuttlefish (Molluscans) possess sensory tentacles Fasciola is an acoelomate animal.
in the anterior head region.
Q.66 Which one of the following is a member
Q.60 Which of the following statement is of Protista?
FALSE? Correct option: (C)
Correct option: (C) Slime molds are classified under the kingdom
Echinoderms are coelomates. Protista. They are eukaryotic organisms that
Q.61 Which of the following statement is exhibit characteristics of both fungi and animals.
INCORRECT? They are heterotrophic and feed on decaying
Correct option: (C) Halophiles can organic matter. They are known for their unique
thrive in hot springs. ability to form large, multinucleate masses called
Thermoacidophiles can thrive in hot springs. plasmodia, which can move and engulf food.
Halophiles can live in extreme salty areas. Q.67 Bilaterally symmetrical and acoelomate
Q.62 Identify the vertebrate group of animals animals are exemplified by: [NEET (UG)
characterized by crop and gizzard in its P-I 2020]
digestive system. [2018] Correct option: (A) Platyhelminthes
Correct option: (A) Aves

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Aschelminthes: Bilaterally symmetrical, circular strand of RNA, without any protective
triploblastic and pseudocoelomate animals. protein coat.
Annelida: Bilateral symmetry, triploblastic, This absence of a protein coat in viroids makes
metamerically segmented and coelomate animals. them highly vulnerable to environmental
Ctenophora: Radially symmetrical, diploblastic degradation.
organisms Therefore, the correct answer is Absence of protein
coat in viroid but present in virus.
Q.68 Which one is saprophytic in nutrition?
Correct option: (A) Q.72 The guts of cows and buffaloes possess
Fungi are saprophytic organisms, meaning they [AIPMT 2015]
obtain their nutrients from dead organic matter. Correct option: (B) Methanogens
They secrete enzymes that break down complex Methanogens are present in the gut of several
organic molecules into simpler compounds, which ruminant animals and are responsible for the
they then absorb. This is why fungi play a crucial production of methane.
role in decomposition and nutrient recycling in
Q.73 Asexual reproduction takes place by
ecosystems. The other options are incorrect:
these spores in phycomycetes:
Cyanobacteria are photosynthetic organisms,
Correct option: (C)
meaning they produce their own food through
Zoospores are motile spores that are produced by
photosynthesis. Viruses are not living organisms
certain fungi, including phycomycetes. They are
and require a host cell to replicate. They do not
flagellated and can swim through water to find
obtain their nutrients through saprophytism.
suitable locations to germinate. They allow for
Q.69 Complete the analogy with respect to asexual reproduction in phycomycetes as they
excretory organ. germinate and develop into new mycelia.
Malpighian tubule: Bombyx :: _______ :
Q.74 In Phycomycetes, asexual reproduction
Balanoglossus
occurs by zoospores or by aplanospores.
Correct option: (D)
Regarding these spores, consider the
In hemichordates, proboscis gland forms the organ
following statements and select the
for excretion.
correct option.
Q.70 How many kingdoms contain eukaryotes Statement I: These spores are
in five kingdom classification? endogeneously produced in sporangium.
Correct option: (A) Statement II: Zoospores are also called
Smart tip : as aplanospores.
Members of Kingdom Protista are unicellular Correct option: (A)
eukaryotes in contrast to bacteria which are Zoospores are motile spores whereas aplanospores
prokaryotes. Protista, Fungi, Plantae, Animalia are are non-motile spores.
the four eukaryotic kingdoms.
Q.75 Which one of the following fungi is NOT
Q.71 Difference between virus and viroid is filamentous?
[NCERT Exemplar] Correct option: (D)
Correct option: (A) Yeast is a unicellular fungus.

Q.76 A student of marine biology visited a

Viruses are enclosed in a protein coat called a
beach for sample collection. He observed
capsid, while viroids lack a protein coat. This is a
an organism with characters like jointed
key difference between the two.
appendages, compound eyes and the
Viruses have a protein coat that protects their
presence of antennae. According to these
genetic material (RNA or DNA). Viroids, on the
other hand, are composed solely of a single,
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 characters, the organism may belong to Molluscs are terrestrial or aquatic animals.
this phylum:
Q.81 All vertebrates are chordates but all
Correct option: (B)
chordates are not vertebrates, why?
The organism observed by the student of marine
[Phase II 2020]
biology exhibits characteristics typical of the
Correct option: (D) Notochord is
phylum Arthropoda. These characteristics include:
replaced by vertebral column in adult of
Jointed appendages: This is a defining feature of
some chordates.
arthropods, allowing them to move efficiently and
Self Explanatory
perform various tasks. Compound eyes: These eyes
Q.82 Which of the following is NOT a
are made up of numerous individual units called
characteristic feature of sponges? [AP
ommatidia, allowing for a wide field of vision and
EAP CET 2021]
the detection of movement. Antennae: These
Correct option: (B)
sensory appendages are used for detecting touch,
smell, and taste, crucial for navigating and finding Sponges are simple multicellular organisms that
food. Therefore, based on these observed lack a skeleton made of chitin. Their bodies are
supported by a network of spicules, which are
characteristics, the organism likely belongs to the
phylum Arthropoda. made of calcium carbonate, silica, or spongin.
Chitin is a structural polysaccharide that is found
Q.77 Which one of the following is TRUE for in the exoskeletons of arthropods, such as insects
dinoflagellates?
and crustaceans. So, the answer is Body supported
Correct option: (D) One of the two
by chitin.
flagella lies transversely in a furrow
between the cellulosic plates and cell Q.83 Spiny skinned animals which exclusively
wall. live in marine habitat belong to phylum
Correct option: (C)
Dinoflagellates are mostly photosynthetic.
Euglenoids have proteinaceous pellicle. Echinoderms are exclusively marine animals
Slime moulds form an aggregation called known for their spiny skin, which is their defining
characteristic. This feature, coupled with their
Plasmodium.
radial symmetry and water vascular system, sets
Q.78 Sexual reproduction does not occur in them apart from other phyla.
Correct option: (A)
Deuteromycetes, also known as Fungi Imperfecti, Q.84 Select the WRONG statement. [NEET P-
II 2016]
are a group of fungi that lack a known sexual
Correct option: (B) The walls of diatoms
reproductive stage in their life cycle. They
reproduce only asexually, hence the name are easily destructible.
The wall of diatoms contains cellulose and silica.
"imperfect fungi". This lack of sexual reproduction
Thus it is indestructible. They do not decay easily.
is a defining characteristic of Deuteromycetes. The
other options, Ascomycetes and Phycomycetes, do After death, they are deposited at the bottom in
water and form diatomaceous earth.
exhibit sexual reproduction as part of their life
cycles. Q.85 Corals belong to the phylum
Correct option: (C)
Q.79 Citrus canker is caused by which of the
following organisms? Corals belong to the phylum Cnidaria. Cnidarians
Correct option: (C) Bacteria are characterized by their radial symmetry, stinging
cells called nematocysts, and a sac-like body with
Self Explanatory
a single opening that serves as both a mouth and an
Q.80 Which one of the following statement is
anus. Corals are colonial cnidarians that form hard,
INCORRECT about Molluscs?
Correct option: (A)
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calcium carbonate skeletons, creating reefs that Plasmogamy is the fusion of the cytoplasm of two
provide important habitats for marine life. gametes, forming a single cell with two nuclei. It is
the first step in the process of fertilization, which
Q.86 Which amongst the following is a source
also includes karyogamy, the fusion of the two
of antibiotics?
Correct option: (B) nuclei. The other options are not relevant to the
fusion of protoplasms. Karyogamy is the fusion of
Penicillium is a genus of fungi that produces
the nuclei of two gametes, dikaryophase is the
penicillin, a well-known antibiotic used to treat
bacterial infections. The other options are not stage where two nuclei coexist in a single cell, and
dikaryon is a cell with two nuclei. So the correct
sources of antibiotics: Puccinia is a genus of fungi
answer is plasmogamy.
that causes rust diseases in plants. Trypanosoma is
a genus of parasitic protozoa that causes diseases Q.89 Methanogens belong to [NEET P-II
like sleeping sickness. Mucor is a genus of fungi 2016]
that can cause infections, but it is not a source of Correct option: (C) Archaebacteria
antibiotics. Methanogens are biogas producing, obligate

Q.87 Which of the following characters is anaerobe, which belong to Archaebacteria.

NOT of class Amphibia? Q.90 Organisms living in salty areas are called
Correct option: (D) as [NCERT Exemplar]
Digestive tract has crop and gizzard as additional Correct option: (B)
chambers in Aves. Smart tip :

Q.88 Fusion of protoplasms between two In Halophiles: Halo means Salt

motile or non-motile gametes is In Thermoacidophiles: Thermo means
Temperature
Correct option: (A)

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