Q. No.1. Lichens growing on tree bark
2. Mycorrhizae helping plant roots absorb nutrients
3. Barnacles attaching to whales
4. Cuckoo laying eggs in a crow’s nest
Select the incorrect match with respect to interspecific interaction
Species A Species B Interaction
(1) + + Mutualism
(2) + - Parasitism
(3) + + Commensalism
(4) + - Predation
| 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. A-2, B-1, C-3
2. A-1, B-3, C-2
3. A-3, B-1, C-2
4. A-1, B-2, C-3
Select the correct match
1. Clown fish and sea anemone - Protocooperation
2. Cuckoo and crow - Brood parasitism
3. Ophrys and Colpa - Commensalism
4. Goat and Abingdon tortoise - Predation
1. Tapeworm in human intestine
2. Tick on a dog
3. Liver fluke in a fish
4. Malarial parasite in blood cells
| Column-I | Column-II | ||
| (a) | Mutualism | (i) | Lichens |
| (b) | Commensalism | (ii) | Lion hunting a deer |
| (c) | Predation | (iii) | Cattle egret and grazing cattle |
| (d) | Parasitism | (iv) | Cuscuta found growing on hedge plants |
| (e) | Competition | (v) | Visiting flamingos and resident fishes in South American lakes |
Options:
1. (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv), (e) –(v)
2. (a)-(iii), (b)-(iv), (c)-(v), (d)-(i), (e) –(ii)
3. (a)-(i), (b)-(ii), (c)-(iv), (d)-(v), (e) –(iii)
4. (a)-(i), (b)-(iii), (c)-(ii), (d)-(iv), (e) –(v)
Match the following (column l with column ll)
Column l Column ll
(Population interaction) (Example)
a Commensalism i Presence of lice among hairs of human
b Parasitism ii Mycorrhizae
c Mutualism iii Barnacles growing on the back of whale
d Predation iv Prickly pear cactus and Cactoblastis
1. a(iii), b(ii), c(i), d(iv)
2. a(iv), b(i), c(ii), d(iii)
3. a(iv), b(ii), (i), d(iii)
4. a(iii), b(i), c(ii), d(iv)
| List-I | List-II | ||
| A. | Pisaster | P. | Cardiac glycosides |
| B. | Calotropis | Q. | Keystone predator |
| C. | Cuscuta | R. | Parasitic plant |
2. A-P, B-Q, C-R
3. A-Q, B-R, C-P
4. A-R, B-P, C-Q
| 1. | It does not remain attached to the host and feeds only briefly for reproduction. |
| 2. | It lives permanently on the host and derives all its nutrition from the host. |
| 3. | It completes its life cycle entirely inside the host organism. |
| 4. | It reduces the reproduction of the host by laying eggs inside host tissues. |
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