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L. R, & S. M. VISSANJI ACADEMY

Secondary Section 2023-24
Preliminary Exam VISSANJI
ACADEMY
Subject: Biology Rsooy tor tomonow

Marks: 80
Std: 10 Time: 2 Hrs
Date: 24/01/2024
on the paper provided
Answers to this Paper must be written
separately.
You will not be allowed to write during the
first 15 minutes.
This time is to be spent in reading the question paper.
the time allowed for writing
The time given at the head of this Paper is
the answers.

questions from Section B.

Section A is compulsory. Attempt any four questions are given in
The intended marks for questions or parts of
brackets ||

SECTION A
Section.)
(Attempt all questions from this
answers to the questions from the given
Question 1. Choose the correct [15]
correct answers only.)
options. (Do not copy the question, write

(i) At the end of Cytokinesis is completed.

(b) Prophase (c) Interphase (d) Telophase
(a) Metaphase
a
having purple flowers is crossed with
(ii) A homozygous pea plant flowers. The Phenotypic ratio
homozygous pea plant bearing white
generation is :
of the offspring obtained in F2
(b) 1:1 (c) 1:2:1 (d) 3:1
(a) 2:1
method of killing bacteria by :
(iii) Addition of salt to pickles is a
(b) Deplasmolysis (c) Turgidity (d) Plasmolysis
(a) Flaccidity
through phloem is :
(iv) The form of sugar transported (c) Ribose (d) Sucrose
(a) Fructose (b) Glucose

the :
(v) Grana of chloroplast is not (b) Site of light dependent phase
(a) Site of light independent phase (d) Site of Photon absorption
(c) Site of Photolysis
Ethylene is found in :
(vi) A higher concentration of (b) Ripe banana
(a) Green banana
(d) Green apple
(c) Fresh potato tuber
1
 kind of Blood bank ?
can be called a (d) Lungs
of the body (c)Spleen
(vii) Which part (b)Liver
(a) Heart
Urea is formed in : (d) Liver
(viii) In humans (c) Kidncy
(a) Ureter (b)Spleen
perfect example of :
constitutes one of the most
(ix)A Spinal nerve (b)Sensory nerves
(a) Motor nerves (d)Mixed nerves
(c) Peripheral nerve
renders
contained in which laver of the eyeball thatreflected
(x) The Melanin is rays of light that are scattered
and
and support in averting
within the eye ? (c) Retina (d) Lens
(a) Sclerotic layer (b) Choroid layer

by the posterior Pituitary ?

(xi) Which of the following is made (c) ACTH (d) ADH
(a) FSH (b) LH

does ovulation take place ?

(xii) On which day of the Menstrual cycle (d) lst day
(a) 5th day (b) 28th day (c) 14th day
day ?
(xiii) Which day is perceived as world population (d) 1lth July
(a) 12th May (b) 14th June (c) 5th July

of modern man in cubic centimeter is:

(xiv) Average cranial capacity (c)
(a)350 (b) 580 1100 (d) 1450

than atria
(xv) Assertion:Walls of ventricles are thicker
Reason: This helps in preventing the back flow of the blood.
reason is the correct
(al Both assertion andreason are tråe and
explanation of assertion
is not the correct
(b) Both assertion and reason are true but reason
explanation of assertion
(c) Assertion is tråe but reason is false
(d) Assertion is false but reason is true

Question 2
(i)Name the following : reproductive
(a) The type of cell division which occurs in the cells of the
organs.
(b) An alteration in genetic material that can be inherited.
(c) The tissue responsible for the ascent of sap in plants.
(d) The metallic cation involved in opening and closing of stomata.
(e) The chemical reaction in which oxygen is given out during
photosynthesis.

2
 metabolism
(e) Basal
Addison's Pollution
(d) disease
(c) Soil(b)(a)DDTColumn A (v) (iv) (iii) (ii)
Response in
Match (e) (d) (c) (b) (a) Choose (e) (d (C) (b) (e) (a)
(a) Fill (°) as
(b) (a) Arrange
category AqueousAssociated
humor. neuron Stoma,
Column
Centrosome, Lumnen,
Chicken Bile,
Detergents, calledisThe Excess The
instrument
called
Geotropism Neanderthal,
sapicns
Homo Sperm
Homo YelloW Dorsal to
in
the whole the be
to
Urea, phenomenon
the inand
to of root
Habilis,duct, spot, Mesophyll
touch items
II the blanks a
and
pox, Muscularwhich odd
Uric thyroxine can logical
rewrite
l X-rays,
CelColour statistical sequence Penis, ganglion,
Conjunctiva,
rewritegiven acid, one be Homo
wall, the of with
tissue, out Testis, sequence
cclls, the
in Sewage, the of
demonstrated
secretion
Cortisone 7. Insecticides
Pesticides 6. ThyroxineChemical
fertilizers
5. Seismotropism
4. 3. 2. Bthe Ammonia
blindness,
Cell others from study events suitable Erectus,
Rcceptor,Xylem, terms
1.ThigmotropismColumn Column suppression
Connective Sperms, Pupil,
correctmembrane, Oil belong: the of may in beginning eachin
3 human words: substomatal
Haermophilia,spills the Australopithecus,
in Cornea, Effector,
with I following also Semen
matching tissue, of heart the
the
Vacuoles growth
population group
with
cause laboratory
beat Lens, Ventral
most terms kind space, that in
pairs. AlbinismPericardium of is Vitreous root the
appropriate and lateral called
of Cromagnon is
goitre with Irnterccllular correct
name gangion,
underlined.
bids the hurmour,
by
called help order
the man,
ones buds of space
[5] [5] ari [5] (5] so
 SECTION B
Section.)
(Attempt anyfour questions from this
Question 3
(i) Mention the cxact Jocation of Corpus callosum
(11) Which gland sccrctes glucocorticojds ? What is its cffect
on body ? [2
(111) Name the two Sensory cells in retina mcant for light adaptation (21
(v) Givc two reasons for theuse of auxin in nurserics. [2;
(V) The diagram given bclow shows a type of tropism. Answer the quesStiorns
that follow : (3|

(a) Name the type of tropism.

(b) Define the above mentioned tropism.
(c) Give an example of a stimulant that helps in the growth of
the part
marked A.

Question 4
1) If a person stands to give a speech before a large
audience, his mouth
dries up and heart rate increases. What brings about these
(ii) State any two harmful effects of soil pollution
changes ? (11
(ii) A woody stemn was girdled by removing a ring of bark, leaving the
xylem
intact. What will be your observation after few weeks ?
2
(iv) Mention any two features of the Cro-Magnon man.
(v) The figure shows a diagrammatic display of (2
certain parts of an organ 3|

(a) Label the parts 1and 2

(b) What is the collective term given to the parts
labelled 1, 2 and 3 ?
(c) Namne the membrane covered opening, which
leads to inner ear, into
which the flat part of the structure labeled 3 fits.
Question 5
i)
Mention two
(iil Mention anytypes of IUDs.
two
(iii) Give
(iv)Write the overall
advantages
location and function ofof
senescence. 2
Mitral valve
(v) The diagram chemical equationof of photosynthesis.
shows a component
2
2
answer the questions that DNA. Study the diagram and
follow :
(3

a. Identify the
structure
b. Label the parts marked A, B and C
C. Adenine of DNA pairs with which nitrogenous base and how many
hydrogen bonds are there between them ?

Question 6
(i) Define flaccidity
(ii) Mention any two advantages of guttation.
(iü) Brain is ordinarily free from shock. Explain by giving suitable reason. (2,
iv) Need to limit family size is more vital today than ever before. Justify. (2)
(v) Draw a neat labeled diagram of Malpighian capsule [3
Question 7
(i) Mention the location or Interstitial cells.
muscles of the eve
(ii) What is meant by power of accommodation? Name the
responsible for the same
(iii) Give origin and function of Platelets
(2)
Corpus luteum ?
(iv) What are the two hormones'secreted by
human brain as seen in an
(v) The diagram given below represents the (3
questions that follow
external view. Study same and then answer the

numbered 1 to 4
(a) Label the parts cells in the
Mention the difference in the arrangement of the nerve
(b)
part marked 2 and4

5
Question 8
(i) Explain the term Population density
(ii) Mention function of Prostate gland and
Bulbourethral glands.
(iii) Give difference between Arteries & Veins (Bascd on Valves & Lumen) (2
(2)
(iv) Give exact location of Pulmonary semilunar valve.When does it
close? (2)
(v) A well-watered healthy potted plant with variegated leaves
was kept in
darkness for about 24 hours. It was then setup as shown in the diagram
and exposed to light for about 12 hours. At the end of this timne, leaf X
and leaf Y were tested for starch. Study the diagram and
answer the
questions that follow :
(3|

White part of leaf -LEAF Y

Cotton wool plug

Green part of leatr LEAF X
Lightproof r.ar
attachei .
SIde of i:t

Sodium hydro%de
Solution

Brown

D Blue black

A C D

a. Why was the plant initially kept in darkness for 24

b. What is the function of Sodium
hours ?
hydroxide solution in the flask ?
C. Select the correct leaf from the five
available choices shown in the
diagram as A, B, C, D and E. Rewrite the correct answer by filling in
the appropriate letter for the questions that follow:
1. After the starch test, leaf X would
look like
2. After the starch test, leaf Y would look like