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1 of 25
Q.1 For human population, the age pyramids generally show age distribution of
- Only males
- Only females
- Of males and females
- None of the above
2 of 25
Q.2 The size of the population tells us a lot about its status in the
- Environment
- Sex-ratio
- Age pyramid
- Habitat
3 of 25
Q.3 The number of deaths in the population during a given period is referred to
- Natality
- Mortality
- Sex-ratio
- None of the above
4 of 25
Q.4 The number of birth during a given period in the population that are added to the initial density is referred to
- Natality
- Mortality
- Sex-ratio
- None of the above
5 of 25
Q.5 Parasites that live inside the host body at different sities are called
- Ecto parasites
- Endo parasites
- Brood parasitism
- None of the above
6 of 25
Q.6 Parasites that feed on the external surface of the host organism are called
- Ecto parasites
- Endo parasites
- Brood parasitism
- None of the above
7 of 25
Q.7 If one species is harmed whereas the other is unaffected is called
- Commensalism
- Amensalism
- Mutualism
- None of the above
8 of 25
Q.8 The interaction where one species is benefitted and the other is neither benefitted nor harmed is called
- Commensalism
- Amensalism
- Mutualism
- None of the above
9 of 25
Q.9 One species benefit in
- Parasitism
- Predation
- Mutualism
- Both (a) and (b)
10 of 25
Q.10 Both species lose in
- Mutualism
- Competition
- Parasitism
- Predation
11 of 25
Q.11 Both the species benefit in
- Parasitism
- Mutualism
- Competition
- Predation
12 of 25
Q.12 A stage of suspended development is called
- Diapause
- Suspend
- Migrate
- Aestivation
13 of 25
Q.13 To avoid summer-related problems – heat and desiccation by organism is called
- Hibernation
- Suspend
- Migrate
- Aestivation
14 of 25
Q.14 Winter sleep is also called as
- Hibernation
- Suspend
- Migrate
- Aestivation
15 of 25
Q.15 The shifting of an organism temporarily from the stressful habitat to a more hospitable area and return when stressful period is over is called
- Suspend
- Migrate
- Hibernation
- Aestivation
16 of 25
Q.16 Habitat together with functions of a species constitute its:
- Topography
- Trophic level
- Boundary
- Ecological niche
17 of 25
Q.17 The maximum growth rate occurs in
- Lag phase
- Exponential, phase
- Stationary phase
- Senescent phase
18 of 25
Q.18 In which one of the following habitats, does the diurnal temperature of soil surface view most?
- Shrub land
- Forest
- Desert
- Grassland
19 of 25
Q.19 Science linking heredity with environment is:
- Ecology
- Ecophysiology
- Genecology
- Genetics
20 of 25
Q.20 Submerged hydrophytes have disseced leaves for
- Decreasing surface area
- Increasing surface area
- Reducing effect pf water currents
- Increasing number of stomata
21 of 25
Q.21 Water holding capacity is maximum in
- Clay
- Sand
- Slit
- Gravel
22 of 25
Q.22 Animals undergo inactive stage during winters. It is called
- Acclimatisation
- Hibernation
- Aestivation
- Adapatation
23 of 25
Q.23 Praying mantis is a good example of
- Camouflage
- Mullarian mimicry
- Warning colouration
- Social insect
24 of 25
Q.24 Animals have innate ability to escape from predation. Select the incorrect example:
- Colour change in Chameleon
- Enlargement of body by swallowing air in puffer fish
- Poison fangas of snakes
- Melaninin in moths
25 of 25
Q.25 Ozone protects biosphere from high energetic:
- Infra-red rays
- Ultraviolet rays
- X-rays
- gamma rays
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Pharmacognosy Aptitude Test 
Ecosystem : Biology (Class 12th) Revision test | MCQs for NEET