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Q. No.Assertion(A): Ecology is a thread that gives us a holistic perspective to Biology.
Reason(R): The essence of biological understanding is to know how organisms, while remaining an individual, interact with other organisms and physical habitats as a group.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Introduction to Ecology |
Level 3: 35%-60%
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| Assertion (A): | An individual may have births and deaths, but a population has birth rates and death rates. |
| Reason (R): | In a population, the rates are expressed as change in numbers (increase or decrease) with respect to members of the population. |
Choices for Assertions and reasons:
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True, but (R) is not the correct explanation of (A). |
| 3. | (A) is True, but (R) is False. |
| 4. | (A) is False, but (R) is True. |
Subtopic: Population Dynamic |
Level 3: 35%-60%
Hints
Assertion(A): Population ecology is an important area of ecology.
Reason(R): Evolutionary changes take place at the population level.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason(R): Evolutionary changes take place at the population level.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Introduction to Ecology |
62%
Level 2: 60%+
Hints
Assertion(A): Population ecology is an important area of ecology.
Reason(R): it links ecology to population genetics and diversity.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason(R): it links ecology to population genetics and diversity.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Introduction to Ecology |
Level 4: Below 35%
Hints
| Assertion (A): | When certain exotic species are introduced into a geographical area, they become invasive and start spreading fast. |
| Reason (R): | The invaded land does not have its natural competitors. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True, but (R) is not the correct explanation of (A). |
| 3. | (A) is True, but (R) is False. |
| 4. | (A) is False, but (R) is True. |
Subtopic: Population Interactions: Competition |
Level 3: 35%-60%
Hints
| Assertion (A): | In a field experiment, when all the starfish were removed from an enclosed intertidal area, more than 10 species of invertebrates became extinct within a year. |
| Reason (R): | This happened due to intraspecific competition. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True, but (R) is not the correct explanation of (A). |
| 3. | (A) is True, but (R) is False. |
| 4. | (A) is False, but (R) is True. |
Subtopic: Population Interactions: Competition |
58%
Level 3: 35%-60%
Hints
Assertion(A): Monarch butterfly is highly tasteful to its predator.
Reason(R): It has a special chemical that is acquired in its caterpillar stage.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason(R): It has a special chemical that is acquired in its caterpillar stage.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Population Interactions: Predation |
70%
Level 2: 60%+
Hints
| Assertion (A): | Plants are more affected by their predators compared to animals. |
| Reason (R): | Plants cannot run away from their predators while animals can. |
Choices for Assertions and reasons:
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True, but (R) is not the correct explanation of (A). |
| 3. | (A) is True, but (R) is False. |
| 4. | (A) is False, but (R) is True. |
Subtopic: Population Interactions: Predation |
93%
Level 1: 80%+
Hints
Assertion(A): A species shows a dramatic increase in its population when its competing species is removed.
Reason(R): The competing species is competitively superior species.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason(R): The competing species is competitively superior species.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Population Interactions: Competition |
Level 3: 35%-60%
Hints
| Assertion (A): | The life cycles of endoparasites are more complex. |
| Reason (R): | Endoparasites have very less specialization. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A) |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A) |
| 3. | (A) is True but (R) is False |
| 4. | (A) is False but (R) is True |
Subtopic: Population Interactions: Parasitism |
73%
Level 2: 60%+
Hints
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