| Assertion (A): | The logistic growth model is considered a more realistic model for most animal populations in natural environmental conditions. |
| Reason (R): | Most animals are capable of showing active locomotion. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A) |
| 2. | Both (A) and (R) are True and (R) does not correctly explain (A) |
| 3. | (A) is True, (R) is False |
| 4. | (A) is False, (R) is False |
| 1. | Two species mutually benefit from interacting with each other. |
| 2. | Individuals of different species require the same resources that are in limited supply. |
| 3. | One species benefits at the expense of another species. |
| 4. | Individuals of the same species cooperate to fend off predators. |
| Column I | Column II | ||
| A | Commensalism | 1 | Cattle egret riding on cattle |
| B | Mutualism | 2 | Tapeworm in human intestine |
| C | Parasitism | 3 | Lichen (Algae and Fungus) |
| 1. | Bees pollinate flowers while obtaining nectar, which is their food source. |
| 2. | Flowers provide shelter to insects, and insects provide nothing in return. |
| 3. | Insects eat parts of the flower, which helps the plant reproduce. |
| 4. | Plants capture and digest insects to obtain nutrients. |
| 1. | Cardiac glycosides | 2. | Strychnine |
| 3. | Quinine | 4. | Caffeine |
| A. | Lag phase, followed by phases of acceleration and deceleration and finally an asymptote. |
| B. | The ability to realise its innate potential to grow in number and reach enormous densities in short time. |
| C. | Exponential growth |
| D. | Logistic growth |
| Assertion (A): | When resources in the habitat are unlimited, the population grows in an exponential or geometric fashion. |
| Reason (R): | When resources in the habitat are unlimited, each species has the ability to realise its innate potential fully and grow in number. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A) |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A) |
| 3. | (A) is True, (R) is False |
| 4. | (A) is False, (R) is True |