Chapter: Organism and Population

What is true for the following statements ?

Statement X : Migration of birds is influenced by light.
Statement Y : Reproduction of birds is influenced by light.
1.
Statement Z : In all birds gonads are activated due to increase in intensity of light during
summer.
XYZ
A. True False False
B. False True False
C. True True True
D. True True False
Answer--->> A. True False False
___________________________________________________________________________(1)
What is true for the given statements ?
Statement X : Birds and Mammals obtain greater body size in cold region than in warm
2. regions.
Statement Y : Birds and Mammals are Homeothermic (warm blooded)animals.
Statement Z : Reptiles are smaller in cold region.
A. True False True
B. True True False
C. True True True
D. False True True
Answer--->> D. False True True
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“Spiny lizard” absorbs water from the atmosphere which is appropriate similar functional
3.
option for the statement ?
A. Tongue of Human
B. Hygroscpic roots of orchid
C. Roots of plants
D. None of these
Answer--->> B. Hygroscpic roots of orchid
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What is true for the following statements ?
Statement X : Marine fishes have chlorine secretory cells. while riverine fishes have chlorine
cells.
4.
Statement Y : Compared to marine water, fluid present in fish is hypotonic while reverine
water is hypertonic compared to fluid present in fish.
XYXY
A. True True
B. False False
C. True False
D. False True
Answer--->> C. True False
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5. Which animal is capable of obtaining water by oxidation of lipid.
A. Rat
B. Earthworm
C. Mole
D. Kangaroo rat
Answer--->> D. Kangaroo rat
___________________________________________________________________________
6. Which is the example of intraspecific competition for food ?
A. Barnacle on rocks of the submerged water
B. Two female dogs and two male dogs
C. Various types of lichens
D. Paramaecium caudatuns and P.aurelia in laboratory.
Answer--->> B. Two female dogs and two male dogs
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Name the animals with freshwater habit in which
(i) endosmosis is possible
7.
(ii) Excess water in removed by green glands
(iii) Greenglands removes water in the from of urine
A. Fresh water fishe
B. ophiocephalus
C. Crustacean astucus
D. None of these
Answer--->> C. Crustacean astucus
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8. In snakes realised (actual) natality is less than potential natality; because.....
A. all the eggs are not incubated
B. enviornmental boomrang (resistance)
C. Though eggs are incubated they donot reach upto adult stage.
D. All of these.
Answer--->> D. All of these.
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9. Indentify me “ My functioning is like an orchid.
A. Protopteru
B. Spiny lizard
C. uromastrix
D. Spiny platypus
Answer--->> B. Spiny lizard
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Crustacian Astacus = Green land Marine turtle what is ‘X’ accroding to the information given
10.
?
A. Salt gland
B. Kidney
C. None of these
D. chlorine secretory cells
Answer--->> B. Kidney
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11. Which of the following is correct statement ?
A. uromatrix lizard stores water in the intestine
B. Camel stores water in its stomach
C. Anabus develops accesary respiratory organs to respire in water.
D. Kangaroo rat undegeoes hibernation.
Answer--->> C. Anabus develops accesary respiratory organs to respire in water.
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 Parasitic animal which is part of bio-geo community and included as zoo planktons and
12.
mesofauna of tenestrial ecosystem is ....
A. Mole
B. mites
C. Earthworms
D. leech
Answer--->> B. mites
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From the given option which is the appropriate for ecto parasite animal Ascaris, Tapeworm,
13.
plas modium, mites
A. phytoplankton
B. mesofauna
C. macrofauna
D. phytoplanktons and mesofauna.
Answer--->> C. macrofauna
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Which living organism is seen in the hot water spring having temperature more than 100
14.
C ..
A. Methanogen
B. Thermoacidophils
C. Helophytes
D. spirokit
Answer--->> B. Thermoacidophils
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Find out population density. Since last 4 years number of lions in a squre forest is 500
15.
(length of forest =10 km)
A. 1.25 lions/year . 2k meter
B. 12.5 lions/ k meter2 - year
C. 1.025 lions/ cm2 month
D. 12.5 lions/ k meter2 - month
Answer--->> A. 1.25 lions/year . 2k meter
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Average human population in a certain time area is 5000 in which 1111 children are
16.
produced during an years, find out the birth rate ?
A. 0.1111
B. 0.3333
C. 0.2222
D. 0.4444
Answer--->> C. 0.2222
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17. In birthrate and deathrate is equal, then what will be the Vital Index ?
A. = 1
B. = 100
C. >100
D. <100
Answer--->> B. = 100
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 Which option is correct for the given statement . Statement X : Density dependent factors
18.
are intrinsic Reason R : They are generated in population only
A. Both statement are true
B. Both statement are false
C. X is true, y is false
D. X is false, Y is true
Answer--->> A. Both statement are true
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In a population of frog ‘J’ type of population growth curve is seen than which information
from the given graph can be true for “ point A”
19. (i) Vital Index < 100
(ii) Birth rate < death rate
(iii) Birht rate > death rate
A. I
B. II, III
C. I, III
D. I, II
Answer--->> D. I, II
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The given graph shows seasonal changes in the population of Birds of Gujarat in the year
20.
2002. In the given graph what is true for point X ?
A. Vital Index <100
B. Vital Index >100
C. Vital Index =100
D. None of these
Answer--->> D. None of these
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21. Producers --->Decomposers ---->’X’, then what will be ‘X’ ?
A. Nostoc
B. Fungi
C. Both of these
D. None of these
Answer--->> D. None of these
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22. In given chart,what is the problem seen in living organism staying in‘X’ denoted area ?
A. endosmosis
B. exosmsis
C. a & b both
D. geting water and maintaing it.
Answer--->> C. a & b both
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What is correct for the given statement ?
23. Statement P : Environmental study is linked with ecology
StatementQ : Ecology is included in environmental study.
A. Both statement are true
B. Both statement are wrong
C. P is right and Q is wrong
D. P is wrong and Q is right
Answer--->> A. Both statement are true
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24. What is the vital Index, if Birht rate is 0 and Death rate = 5 ?
A. 0
B. 100
C. 1
D. None of these
Answer--->> A. 0
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25. If the Birth rate is 10 and death rate is 0 then what is VITAL INDEX ?
A. 0
B. 100
C. Infinative
D. 1
Answer--->> C. Infinative
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Which is appropriate for the following statement ?
Statement X : Pacific salmon fish reproduces only once in its life time.
26.
Statement Y : In a reproductive season it lays 2,80,000,000 eggs.
XY
A. True True
B. False False
C. True False
D. False True
Answer--->> C. True False
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Mycobiont Supplies X to phycobiont and phycobiont supplies Y to mycobiont, then what is
27.
true for X and Y ?
A. X : Mineral element ; Y : Habitat
B. X : organic nutrients ; Y : Inorganic Nutrient
C. X : Habitat Y : protection
D. X : Minerals Y : organic nutrients
Answer--->> D. X : Minerals Y : organic nutrients
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In a population of salmon fish, potential Natality is 10,000 while realised mortality is 200,
28.
then the Vitlal Index =
A. 50,
B. less then 50
C. mor then 50
D. None of these
Answer--->> B. less then 50
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29. Which of the following is not possible in ecosystem where microflora is absent
A. Photosynthesi
B. Decomposition
C. Assimillation
D. None of these
Answer--->> D. None of these
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30. If marine fish is kept in fresh water, will it survive
A. Yes, If chlorine cells are placed in its kidney
30. If marine fish is kept in fresh water, will it survive
B. Yes, If chlorine cells are placed in its green gland
C. No, Because it can not adapt
D. No, they can not survive but of yongones hatching out of their eggs can survive
Answer--->> C. No, Because it can not adapt
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31. What is true for both the organism showing interspecific compitition ?
A. Both are benefited
B. more or less harmful effect to both
C. one is benefited where as other is at loss
D. None of these
Answer--->> B. more or less harmful effect to both
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If at “t” time population density is N, then what is the equation for the population density at
32.
(t+1) time ?
A. N (t+1) = Nt - [CD+E] - [B+I)]
B. N (t+1) = Nt+B+I-D-E
C. N (t+1) = Nt+(B+I)-(D+ E)]
D. All of these
Answer--->> D. All of these
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33. Write appropriate option for antibiosis
A. Penicillium fungi and certan gram +ve bacteria
B. Penicillium fungi and certan gram -ve bacteria
C. Spirocheate and fermicutes
D. None of these
Answer--->> A. Penicillium fungi and certan gram +ve bacteria
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34. In which subdivision of aquatic ecosystem thermal stratification in seen ?
A. marine
B. deep fresh water habitat
C. marine and fresh water are
D. None of these
Answer--->> B. deep fresh water habitat
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In which of the following aquatic ecosystems habitat fluid (liquid) is very concetrated
35.
compared to body fluid ?
A. Marine
B. Esturine
C. Riverine
D. pond.
Answer--->> A. Marine
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36. Which of the following is true with reference to temperature diffrence ?
A. 1. Terrestrial Habital > Aquatic Habitat 2. Sea < Deep fresh water lakes
B. 1. Aquatic Habitat > Terrestrial Habitat 2. Sea < Deep fresh water lake
C. 1. Terrestrial Habital = Aquatic Habitat 2. Sea < Deep fresh water lake
D. 1. Terrestrial Habital < Aquatic Habital 2. Sea = Deep fresh water lake
Answer--->> A. 1. Terrestrial Habital > Aquatic Habitat 2. Sea < Deep fresh water lakes
___________________________________________________________________________
37. Water holding capacity of land depends on ?
A. Soil composition
B. Grain size
C. Aggregation of grain
D. All of these
Answer--->> D. All of these
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What true for the following statements ?
Statement X : During evolution many species, by continous development of their internal
38. environment, made their physiologycal processes more efficient.
Statement Y : Orgenisms show adaptations in order to survive in the enviornment
XYXY
A. True True
B. False True
C. True False
D. False False
Answer--->> A. True True
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In which of the following organism water is stored in its transformed from and not water as
39.
such ?
A. camel
B. Uromatrix
C. Spiny tailed lizard
D. rat
Answer--->> A. camel
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Which path is followed by plants as a part of adaptation in an ecosystem where Kangaroo
40.
rat is living ?
A. C3 Path
B. C4 Path
C. CAM Path
D. TCA Path
Answer--->> C. CAM Path
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Which is true for the following statements ?
Statement X : Cursorial animals have spindle shaped body
41.
Statement Y : Because of narrow head they can prepare burrow properly
XY
A. True False
B. False True
C. False False
D. True True
Answer--->> D. True True
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42. What is the temperature at which archeobacteria can survive ?
A. 90 C
B. 100 C
C. 110 C
D. All of these
42. What is the temperature at which archeobacteria can survive ?
Answer--->> D. All of these
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To whom can we correlate the young one developing from the eggs of Daphnis which are
43.
laid at normal room temperature ? (i) queen bee (ii) worker bee (iii) male (drone) bee
A. i, ii
B. i, iii
C. ii, iii
D. i, ii,iii)
Answer--->> A. i, ii
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Which is appropriate option if we take ‘T’ for correct statement and’F’ for wrong statement ?
(i) Energy pyramids are always upright.
(ii) Detritus food chain begins with dead organic matter
44. (iii) C4 path is the only path seen in xerophytes
(iv) Biodiversity is less in equatorial region because of more sunlight
(v) At normal Temperature daphnis lays parthenogenetic eggs. which develops into male(0
)
A. TFTTF
B. TFFFF
C. FFFTF
D. TFTFF
Answer--->> B. TFFFF
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Increase and decrease in a population in one of the places in USA, because of sandy
cyclone is
given below.
Which type of graph is possible for total no. of individuals in a population v/s month ?
45. Month Birth rate Imigration Death Emigration
July 40 100 30 20
August 100 200 50 45
September 200 800 100 10
October 100 -- 5000 3000
A. S. Shaped
B. J. Shaped
C. irrupative
D. None of these
Answer--->> B. J. Shaped
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46. Hygroscopic skin is seen in.....
A. Kangaroo rat
B. Uromatrix
C. Spiny tailed lizard
D. Camel
Answer--->> C. Spiny tailed lizard
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47. What is true for marine animals ?
A. Because of exosmosis they drink sea water
B. As they drink sea water exosmosis occurs
C. Because of exosmosis body fluid become hypotonic, so they drink sea water
47. What is true for marine animals ?
D. None of these
Answer--->> A. Because of exosmosis they drink sea water
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In order to find out VITAL INDEX in Rampur Village, following information was gathered
Death Rate = 1/x Birth Rate = z
48.
Average population = 1/y
What is the Vital Index ?
A. xyz X 100
B. z/xy =100
C. xy/z X 100
D. 100/xyz
Answer--->> A. xyz X 100
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49. What is the true for the community ecology diagram ?
A. Involvement of 4 individuls of a population
B. Involvement of 4 population of a species
C. Involvement of 4 species of a community
D. Involvement of 4 speces of 4 ecosystem
Answer--->> C. Involvement of 4 species of a community
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Match the column I with column II
Column I Column II
(1) Astacus (p) Hydrophiic skin
50.
(2) Marine turtle (q) green gland
(3) Spiny lizard (r) water storage in intestine
(4) Uromatrix (s) salt glands
A. (1-q), (2-s), (3-p) (4-r)
B. (1-s), (2-q), (3-p) (4-r)
C. (1-s), (2-p), (3-q) (4-r)
D. (1-p), (2-q), (3-s) (4-r)
Answer--->> A. (1-q), (2-s), (3-p) (4-r)
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51. Which of the following is incorrect if ‘O’ sign is used for benificial and ‘+’ sign for harmful ?
A. Penicillium <--> Gram +ve bacteria ; Penicillium: ‘+’
B. Rhizobium <---> palnt - leguminosae family : Both ‘O’
C. Tiger <--> Rabbit ; Tiger : ‘O’
D. Shank fish <---> Suckerfish ; Suckerfish ; ‘O’
Answer--->> A. Penicillium <--> Gram +ve bacteria ; Penicillium: ‘+’
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52. What will happen if ‘X’ which is related to this reaction is absent ?
A. Deconposition, essential process like death, will stop
B. Damage to ecosystem
C. Begining of the food chain is not possible
D. All the statements given are correct
Answer--->> D. All the statements given are correct
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53. In the section of lichen which layer is seen just below “ upper cortex”
A. Medulla
B. Algal layer
C. lowercortex
D. All of these
Answer--->> D. All of these
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What is true for the given statements ?
Statement X : Protopterus aestivate during winter to overcome dry period
54.
Statement Y : The process of aestivation in protopterus is to overcome unfavourable
condition
A. Both statements are true
B. X-Correct Y- wrong
C. Both statements are wrong
D. X- wrong Y- correct
Answer--->> D. X- wrong Y- correct
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What is true for the given statement ?
Statement X : Most of the animals and almost all the plants cannot keep up their internal
55.
enviornment constant
Statement Y : process of osmoregulation in plants is an example of this
A. Both statements are true
B. X - correct, Y- wrong
C. Both statements are wrong
D. X- wrong, Y- correct
Answer--->> A. Both statements are true
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X= Arthropods, Y = Mollusca, z = Coelenterates :-If the X by using Y, lives benifical life with
56.
z, then which of the following is correct example ?
A. X = cockroachY = pearl oyester Z = Hydra
B. X = Millipede Y = pila Z = jellyfish
C. X = Hermit crab Y = Gastropoda Z = sea anenone
D. All of these
Answer--->> C. X = Hermit crab Y = Gastropoda Z = sea anenone
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57. From the given option find out the correct pair ?
A. Mesofauna - Earthworm
B. Macrofauna - spider
C. Microfauna - fungi
D. None of these
Answer--->> C. Microfauna - fungi
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Mathc column I with column II
Column - I Column - II
1. Mutualism (p) Barnacles
58.
2. Competition (q) Tiger
3. Predation (r) Mites
4. Parasitism (s) Sea anemone
A. (1-s), (2-r), (3-p) (4-q)
B. (1-r), (2-s), (3-q) (4-p)
 Mathc column I with column II
Column - I Column - II
1. Mutualism (p) Barnacles
58.
2. Competition (q) Tiger
3. Predation (r) Mites
4. Parasitism (s) Sea anemone
C. (1-s), (2-p), (3-q) (4-r)
D. (1-q), (2-r), (3-s) (4-p)
Answer--->> C. (1-s), (2-p), (3-q) (4-r)
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Give correct option for the given true and false statements
(i) Some insects, birds and mammals living in warm and dry climate have more darker black
pigments than the races of same species living in cold and humid climate.
59. (ii) Tempreture variation is much lesser in aquatic habitat compared to terrestrial habitat
(iii) In deep fresh water lakes, there is gradual incrase in tempreture from surface to the
bottem
(iv) In an aquatic habitat production increases with insing depth. (T =True, F = False)
A. FFFF
B. TFTF
C. TTFT
D. FTFT
Answer--->> D. FTFT
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‘X’ is an example of Mutualism and ‘Y’is an example of succession then which is the correct
60.
realtionship ?
A. X = Hermit Grab Y = Gastropod
B. X= Sea anemore Y = mesosere Succession
C. X = Lichen Y = Xerosere
D. X= Lichen Y= Hydrosere
Answer--->> C. X = Lichen Y = Xerosere
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At ‘t’ time, population density is ‘N’ and at t+1 time population density is Nt+1/If Nt+1 - Nt
61.
then find out the correct option
A. B-D +I-E  0
B. B-D+I-E = 0
C. B+D-I+E +0
D. B+D-I+E  0
Answer--->> B. B-D+I-E = 0
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Which of the following is not included as the climax community of general processof
62.
succession ?
A. Sedge-meadow stage
B. phytoplanktones
C. Forest
D. Grassland
Answer--->> B. phytoplanktones
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63. How mandy sq. km. area of biosphere is occupied by marine habitat. ?
A. 3,62,000,000
B. 36 crore 20 lacs
63. How mandy sq. km. area of biosphere is occupied by marine habitat. ?
C. 36,20 Million
D. all of these
Answer--->> D. all of these
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64. Whats percentage of earth is occupied by marine habitat ? (1) 71% (2) 4 % (3) 67% (4) 29%
A. 1,2
B. 2,3
C. 1,4
D. 1
Answer--->> D. 1
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65. What is the composition of soil with high waterlogging capicity ?
A. Sandy soil
B. Black soil (loan soil)
C. Rocky soil
D. Any one of these
Answer--->> B. Black soil (loan soil)
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Recently a village was badly affected by jaundice and Dengue,which of the following will
66.
decrease due to this ?
A. No. of person
B. area
C. Birthrate
D. Death rate
Answer--->> A. No. of person
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Which is related to the given statement ? In the begining of summer crow and koel lays
67.
eggs.
A. As the light intensity decerease reproductive organs become active
In some Birds increase or decrease in intensity of hight- makers reproductive organs active or
B.
inactive respecctivity
C. with increase in temperture, gonads become active
D. None of these
Answer--->> C. with increase in temperture, gonads become active
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Population of CBM Village year wise ........
2000 -----> 1000
2005 -----> 400
68.
2010 -----> 600
2012 -----> 800
what will be the appropri/ate graph for this ?
B. Irruptive
C. ‘S’ shaped
D. J shaped
Answer--->> B. Irruptive
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 What is correct for the given statement ?
69. Statement X : Ascaris are permanent parasites
Statement Y : Ascaris lives inside the host’s body
A. Both X&Y are correct
B. Both x & Y are wrong
C. X is wrong Y is true
D. X is correct & Y is true
Answer--->> A. Both X&Y are correct
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Depending on the study of bird population in diffrent areas of North Gujarat for last 10 years
70.
(2000 -2010) In which month population of bird is least ?
A. February
B. September
C. April
D. October
Answer--->> B. September
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Which is the correct option for the given table ?write ‘T’ if the given ecample is correct and
‘F’ for
wrong example
Information Example
71.
Breed only once Bamboo
Breeds many time Birds like pigeon, Mammals
Small sized but many offsprings Pray Birds
less in number but big size offsprings Only deep marine shishes
A. TFT
B. TTFF
C. FFTT
D. TFFF
Answer--->> B. TTFF
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72. Biological control as pest control in agriculture is an example of .....
A. Predation
B. Competition
C. Emigration
D. diseases
Answer--->> A. Predation
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The turtle of Galapagus island and the goats living there both were eating tender grass,
73.
state the relationship.
A. Interspecific competition
B. Emigration
C. predation
D. None of these
Answer--->> A. Interspecific competition
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74. carrying capicity of a population is determind by (BHU 2001)
A. Birth rate
B. Death rate
C. limiting resources
74. carrying capicity of a population is determind by (BHU 2001)
D. Reproductive ability ...
Answer--->> C. limiting resources
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75. Biotic community means.... [CBSC, PMT - 2001]
A. Group of Birds
B. Group of species
C. Group of interrelated population
D. Groups of interrelated ecosystem
Answer--->> C. Group of interrelated population
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76. What is true for the members of same species [CBSC, PMT - 2002]
A. Capicity of inter breeding
B. shows same ecological niche
C. show diffrent type of ecological niche
D. They have diffrent Habitat
Answer--->> A. Capicity of inter breeding
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