List I (Interaction) |
List II (Species A and B) |
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A. | Mutualism | I. | +(A), O(B) |
B. | Commensalism | II. | –(A), O(B) |
C. | Amensalism | III. | +(A), –(B) |
D. | Parasitism | IV | +(A), +(B) |
Options: | A | B | C | D |
1. | III | I | IV | II |
2. | IV | II | I | II |
3. | IV | I | II | III |
4. | IV | III | I | II |
Statement I: | Gause's 'Competitive Exclusion Principle' states that two closely related species competing for the same resources cannot co-exist indefinitely and competitively inferior one will be eliminated eventually. |
Statement II: | In general, carnivores are more adversely affected by competition than herbivores. |
List I (Interacting species) | List II (Name of Interaction) | ||
A. | A Leopard and a Lion in a Forest/grassland | I. | Competition |
B. | A Cuckoo laying an egg in a Crow's nest | II. | Brood parasitism |
C. | Fungi and root of a higher plant mycorrhizae | I. | Mutualism |
D. | A cattle egret and a Cattle in a field | IV. | Commensalism |
Options: | A | B | C | D |
1. | II | III | I | IV |
2. | I | II | III | IV |
3. | I | II | IV | III |
4. | III | IV | I | II |
List I | List II | ||
A. | Logistic growth | I. | Unlimited resource availability condition |
B. | Exponential growth | II. | Limited resource availability condition |
C. | Expanding age pyramid | III. | The percent individuals of pre-reproductive age is largest followed by reproductive and post reproductive age groups |
D. | Stable age pyramid | IV. | The percent individuals of pre-reproductives and reproductive age group are same |
Options: | A | B | C | D |
1. | II | IV | III | I |
2. | II | I | III | IV |
3. | II | III | I | IV |
4. | II | IV | I | III |
1. | Cardiac glycosides | 2. | strychnine |
3. | toxic ricin | 4. | distasteful quinine |
1. | 10 | 2. | 9 |
3. | 25 | 4. | 15 |
Assertion (A): | A person goes to high altitude and experiences "Altitude Sickness" with symptoms like breathing difficulty and heart palpitations. |
Reason (R): | Due to low atmospheric pressure at high altitude, the body does not get sufficient oxygen |
1. | (A) is True but (R) is False |
2. | (A) is False but (R) is True |
3. | Both (A) and (R) are True and (R) is the correct explanation of (A) |
4. | Both (A) and (R) are True but (R) is not the correct explanation of (A) |
Assertion (A): | Many species of small plants (herbs and shrubs) growing in forest are adapted to photosynthesize optimally under very low light conditions |
Reason (R): | Small plants are constantly over-shadowed by tall canopied trees. |
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. | Both (A) and (R) are false. |
Assertion (A): | The availability of light on land is closely linked with that of temperature. |
Reason (R): | Sun is the source of both available light and temperature on land. |
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. | Both (A) and (R) are false. |