| List-I | List-II | ||
| A. | Predator | I. | Ophrys |
| B. | Mutualism | II. | Pisaster |
| C. | Parasitism | III. | Female wasp and fig |
| D. | Sexual deceit | IV. | Plasmodium |
| List I (Interaction) |
List II (Species A and B) |
||
| 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 |
| 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 | III. | 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 |
If '+' sign is assigned to beneficial interaction, '–' sign to detrimental and '0' sign to neutral interaction, then the population interaction represented by '+' '–' refers to:
| 1. | mutualism | 2. | amensalism |
| 3. | commensalism | 4. | parasitism |
| 1. | Human foetus developing inside the uterus draws nourishment from the mother |
| 2. | Head louse living on the human scalp as well as laying eggs on human hair |
| 3. | The cuckoo (koel) lays its eggs in a crow's nest |
| 4. | The female Anopheles bites and sucks blood from humans |
Which of the following is a correct pair:
1. Cuscuta – parasite
2. Dischidia – insectivorous
3. Opuntia – predator
4. Capsella – hydrophyte