Q.1.
Find the wrongly matching:
-
13%
a) Cattle egret and cattle – Commensalism.
-
26%
b) Penicillium and bacteria – Ammensalism.
-
14%
c) Fig tree and wasp – Mutualism.
-
47%
d) Monarch butterfly and bird – Competition.
Q.2.
Birth rate under ideal conditions is known as
-
17%
a) mortality
-
60%
b) natality
-
20%
c) both a and b
-
3%
d) none of these
Q.3.
Which of the following statements is false about age pyramids?
-
13%
a) The shape of the pyramids reflects the growth status of the population.
-
15%
b) For human population, the age pyramids generally show age distribution of males and females in a combined diagram.
-
51%
c) In declining population, the number of pre-reproductive individuals is high.
-
21%
d) If in an age pyramid, post reproductive individuals are minimum, it will be expanding population.
Explanation
Q.4.
Assertion: Prolonged Intraspecific competition causes an increase in the size of the niche of a population. Reason: In such a population, use of new type of resources will increase through generations.
-
47%
a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
-
22%
b) Both Assertion and Reason are true but Reason is NOT the correct explanation of Assertion.
-
11%
c) Assertion is true but Reason is false.
-
20%
d) Both Assertion and Reason are false.
Q.5.
If global warming continues, how would the distributional range of some species be affected?
-
48%
a) There will be poleward shift
-
19%
b) There will be equatorial shift
-
12%
c) No change expected for any species
-
21%
d) Shift to marine water from land
Q.6.
Producers → Decomposers → ’X’, then what will be ‘X’ ?
-
15%
a) Nostoc
-
41%
b) Fungi
-
20%
c) Both of these
-
24%
d) None of these
Q.7.
An association between two or more species in which both are benefited is known as
-
12%
a) commensalism
-
20%
b) symbiosis
-
67%
c) mutualism
-
1%
d) cooperation
Q.8.
In Galapagos Islands, Abingdon tortoises became extinct within a decade after goats were introduced on the island, because:
-
18%
a) Resources are limited.
-
9%
b) Intraspecific competition.
-
58%
c) Greater browsing efficiency of goats.
-
15%
d) Resources are limited.
Q.9.
Assertion: Plant animal interactions do not generally involve co – evolution of the mutualistic organisms. Reason: Evolution of the plants and animals never go side by side.
-
23%
a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
-
26%
b) Both Assertion and Reason are true but Reason is NOT the correct explanation of Assertion.
-
18%
c) Assertion is true but Reason is false.
-
33%
d) Both Assertion and Reason are false.
Q.10.
Find out the correct ones: (i) Mammals of colder climate generally have shorter ears and limbs to minimise heat loss. (ii) All organisms have behavioural adaptations that allow them to respond quickly to a stressful condition. (iii) Some organisms possess behavioural adaptations which allow them migrating temporarily to a less stressful situation. (iv) Invertebrates and fishes live at greater depths in the ocean have biochemical adaptations to cope with high pressure.
-
13%
a) (i) and (ii).
-
18%
b) (ii) and (iii).
-
51%
c) (i), (iii) and (iv).
-
18%
d) (i), (ii) and (iv).
Q.11.
The father of ecology in India is:
-
5%
a) Dudgeon.
-
11%
b) Agharkar.
-
21%
c) W.H. Pearsal.
-
64%
d) Ramdeo Misra.
Q.12.
What true for the following statements ? Statement X : During evolution many species, by continous development of their internal environment, made their physiologycal processes more efficient. Statement Y : Organisms show adaptations in order to survive in the enviornment
-
60%
a) X=True; Y=True
-
10%
b) X=True; Y= False
-
25%
c) X=False; Y= True
-
5%
d) X=False; Y= False
Q.13.
Which of the following algae is likely to be found in the deepest waters?
-
9%
a) Green
-
16%
b) Brown
-
64%
c) Red
-
11%
d) All are found at equal depths
Q.14.
When certain exotic species are introduced into a geographical area they become invasive mainly because
-
21%
a) The invaded land has unlimited resources for the introduced species
-
46%
b) The invaded land does not have its natural predator
-
14%
c) The population of the introduced species in the invaded land is very low
-
19%
d) Introduced species do not face any competition in the introduced land
Q.15.
Gause’s principle of competitive exclusion is, essentially
-
23%
a) The more abundant species will exclude the less abundant species through competition
-
18%
b) Competition for the same resources excludes species having different life styles
-
46%
c) No two species can occupy the same niche indefinitely when resources are limited
-
14%
d) Larger organisms exclude smaller ones through competition as in the case of large trees controlling underbrush
Q.16.
In general, which of the following is not an adaptation seen in parasites in accordance with their life style?
-
19%
a) Loss of unnecessary sense organs
-
23%
b) Presence of adhesive organs
-
47%
c) Low reproductive capacity
-
11%
d) Loss of digestive system
Q.17.
Consider the following four condition (I-IV) and select the correct pair of them as adaptation to environment in desert lizards The conditions I. Burrowing in soil to escape high temperature II. Losing heat rapidly from the body during high temperature III. Bask in sun when temperature is low Iv. Insulating body due to thick fatty dermis
-
31%
a) (I) and (III)
-
22%
b) (II) and (IV)
-
29%
c) (I) and (II)
-
18%
d) (III) and (IV)
Q.18.
Praying mentis is a good example of Explanation is provided, please click on
-
24%
a) mullerian mimicry
-
12%
b) warning colouration
-
15%
c) social insects
-
49%
d) camouflage
Q.19.
Which of the following statements is incorrect?
-
5%
a) Lichen, an association of fungus and algae is an example of mutualism
-
22%
b) Those epiphytes which use other plants for support only and not for water or food supply and are examples of commensalism
-
32%
c) Sea-anemone on hermit-crab is an example of protocooperation
-
41%
d) Mutualism, protocooperation, commensalism cannot be included under symbiosis
Q.20.
In an area, a population with large size individuals having long life span, more parental care and slow development was present. The type of population growth curve will be
-
45%
a) S-shaped
-
38%
b) J-shaped
-
5%
c) Z-shaped
-
12%
d) All of these
Explanation
Q.21.
The ratio of natality to mortality is:
-
18%
a) Biotic potential.
-
36%
b) Vital index.
-
2%
c) Dispersal.
-
44%
d) Age distribution.
Q.22.
Find out the incorrect statement:
-
8%
a) If predator is too efficient and overexploits its prey, then the prey might become extinct.
-
25%
b) Predator helps in maintaining species diversity in a community.
-
20%
c) Cuscuta, has lost its chlorophyll and leaves in the course of evolution.
-
48%
d) The plasmodium is a digenetic ectoparasite in human and female anopheles mosquito.
Q.23.
Assertion: In deep water bodies, variations in temperature of water at different depths results in thermal stratifications. Reason: In temperate lakes, cooling of surface water during autumn and warming of it during spring results in circulation of nutrients as well as oxygen, twice a year.
-
49%
a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
-
23%
b) Both Assertion and Reason are true but Reason is NOT the correct explanation of Assertion.
-
20%
c) Assertion is true but Reason is false.
-
9%
d) Both Assertion and Reason are false.
Q.24.
Select the mismatch from the following which states the major biomes and the predominant plant species in that biome: (i) Tropical rain forests - Dipterocarpus and Hopea. (ii) Tropical deciduous forests - Shorea robusta (Sal) and Tectona grandis (Teak). (iii) Temperate broad – leaf forest – Quercus (Oak). (iv) Temperate needle – leaf forest – Pinus wallinchiana (Pine), Cedrus deodara (Deodar), Cupressus torulosa (Cypress), Picea smithiana (Spruce), Abies pindrow (silver fir).
-
10%
a) (i) and (ii) only.
-
31%
b) (iii) and (iv) only.
-
10%
c) (i) and (iii) only.
-
48%
d) All matches are correct.
Q.25.
From the following statements identify the correct statements: (i) Ecology is basically concerned with four levels of biological organisation i.e. Organism, population, community and biosphere. (ii) Physiological ecology which tries to understand how different organisms are adapted to their environment in terms of not only survival but also reproduction. (iii) On planet, life exists not just in a few favourable habits, but even in extreme and harsh habits (e.g., deep oceans, Polar Regions, High Mountain top, boiling thermal springs). (iv) Over a period of time, the organism had through natural selection evolved adaptations to optimise its survival and reproduction in its habitat. (v) Population ecology (Autecology) is an important area of ecology because it links ecology to population genetics and evolution.
-
41%
a) All are correct.
-
19%
b) Only (i), (ii), (iii) and (iv) are correct.
-
28%
c) Only (ii), (iii), (iv) and (v) are correct.
-
12%
d) Only (ii), (iii) and (v) are correct.
Q.26.
“Spiny lizard” absorbs water from the atmosphere which is appropriate similar functional option for the statement ?
-
11%
a) Tongue of Human
-
61%
b) Hygroscpic roots of orchid
-
25%
c) Roots of plants
-
3%
d) None of these
Q.27.
Which living organism is seen in the hot water spring having temperature more than 100°C.
-
16%
a) Methanogens
-
72%
b) Thermoacidophils
-
9%
c) Helophytes
-
2%
d) spirokit
Q.28.
Match the column I with column II
| Column I | Column II |
| (1) Astacus | (p) Hydrophiic skin |
| (2) Marine turtle | (q) green gland |
| (3) Spiny lizard | (r) water storage in intestine |
| (4)uromastyx | (s) salt glands |
-
30%
a) (1-q), (2-s), (3-p) (4-r)
-
50%
b) (1-s), (2-q), (3-p) (4-r)
-
20%
c) (1-s), (2-p), (3-q) (4-r)
-
0%
d) (1-p), (2-q), (3-s) (4-r)
Q.29.
‘X’ is an example of Mutualism and ‘Y’is an example of succession then which is the correct realtionship ?
-
18%
a) X = Hermit Grab Y = Gastropod
-
30%
b) X= Sea anemore Y = mesosere Succession
-
30%
c) X = Lichen Y = Xerosere
-
21%
d) X= Lichen Y= Hydrosere
Q.30.
Which is the correct option for the given table ?write ‘T’ if the given example is correct and ‘F’ for wrong example ,
| Information | Example |
| Breed only once | Bamboo |
| Breeds many time | Birds like pigeon, Mammals |
| Small sized but many offsprings | Prey Birds |
| less in number but big size offsprings | Only deep marine fishes |
-
21%
a) TFTF
-
67%
b) TTFF
-
6%
c) FFTT
-
6%
d) TFFF