Q. No.An endoparasite in the human alimentary canal is expected to possess:
I:
Well-developed locomotion
II:
A means to protect itself against the digestive juices of humans
III:
A high reproductive capacity
1.
Only II
2.
Only I and II
3.
Only II and III
4.
I, II and III
An apex predator feeding on five different species is experimentally removed. The expected effect on the area will be:
| 1. | An increase in the number of all the five species |
| 2. | A decrease in the biodiversity |
| 3. | One of the five species becomes the apex predator |
| 4. | All five species die |
Abingdon tortoise got extinct from the Galapagos Islands because of:
| 1. | pollution caused by frequent visits by humans |
| 2. | a volcanic eruption causing deposition of lava |
| 3. | better browsing efficiency of introduced goats outcompeting them |
| 4. | invasion by a predator from the nearby mainland |
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The distribution of a species is found to expand dramatically when the competitive superior species is removed from the area. This is called as:
| 1. | Competitive exclusion | 2. | Competitive release |
| 3. | Interference competition | 4. | Exploitative competition |
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Identify the incorrect statement regarding population interactions:
| 1. | An orchid growing as an epiphyte on a mango branch is an example of commensalism. |
| 2. | A given fig species can only be pollinated by its partner wasp. |
| 3. | Biological pest control methods are largely based on predation. |
| 4. | Most parasites do not harm or reduce the fitness of their hosts. |
Resource partitioning is:
| 1. | Competitive exclusion results in the success of the superior species. |
| 2. | Slight variations in niches allow similar species to coexist. |
| 3. | Two species can coevolve to share the same niche. |
| 4. | Differential resource utilization results in a decrease in species diversity |
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Consider the given two statements:
| I: | Parasitoidism is the strategy that is closer to predation than parasitism. |
| II: | Parasitoids feed on a living host which they eventually kill, typically before it can produce offspring |
| 1. | Both I and II are correct and II explains I. |
| 2. | Both I and II are correct but II does not explain I. |
| 3. | I is correct and II is incorrect. |
| 4. | Both I and II are incorrect. |
| 1. | Pyramid A is of 2020 as it has a broader base |
| 2. | Pyramid B is of 2000 as it has more females in the younger age groups |
| 3. | Pyramid B is of 2020 as it has more females in the younger age groups |
| 4. | Pyramid A is of 2000 as it has a broader base |
| 1. | Mullerian mimicry | 2. | Batesian mimicry |
| 3. | Aposematism | 4. | Camouflage |
| I: | The life cycles of endoparasites are more complex than that of the ectoparasites. |
| II: | The morphological and anatomical features of endoparasites are greatly simplified. |
| 1. | Both I and II are correct and II explains I |
| 2. | Both I and II are correct but II does not explain I |
| 3. | I is correct but II is incorrect |
| 4. | Both I and II are incorrect |
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