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Q. No.Consider the two given statements:
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
Subtopic: Population Interactions: Parasitism |
52%
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In ‘competitive release’:
| 1. | differences among similar species whose distributions overlap geographically are accentuated in regions where the species co-occur, but are minimized or lost where the species' distributions do not overlap. |
| 2. | two species which compete for the same limited resource cannot coexist at constant population values. |
| 3. | there is an expansion of the range of a species when a competitor for its niche is removed. |
| 4. | there is a division of limited resources by species to help avoid competition in an ecological niche. |
Subtopic: Population Interactions: Predation |
From NCERT
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If you draw the age pyramid for a population that is expanding in size, you would expect that:
| 1. | the number of individuals in the pre-reproductive age group are more than the number of individuals in the reproductive age group. |
| 2. | the number of individuals in the reproductive age group are less than the number of individuals in the post-reproductive age group. |
| 3. | the number of individuals in the reproductive age group are equal to the number of individuals in the reproductive age group. |
| 4. | the number of individuals in the pre-reproductive age group are less than the number of individuals in the reproductive age group. |
Subtopic: Age Pyramid |
86%
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The following image represents what type of population:
| 1. | Finite Population | 2. | Declining Population |
| 3. | Stabilising Population | 4. | Expanding Population |
Subtopic: Population Dynamic |
77%
From NCERT
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A form of mimicry where a harmless species has evolved to imitate the warning signals of a harmful species directed at a predator of them both is called as:
| 1. | Mullerian mimicry | 2. | Batesian mimicry |
| 3. | Aposematism | 4. | Camouflage |
Subtopic: Population Interactions: Predation |
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Given below are two population pyramids, both of India, one for year 2000 and another for year 2020:
| 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 |
Subtopic: Population Attributes |
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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 |
Subtopic: Population Interactions: Competition |
88%
From NCERT
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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 |
Subtopic: Population Interactions: Predation |
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 |
Subtopic: Population Interactions: Parasitism |
64%
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 |
Subtopic: Population Interactions: Competition |
67%
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