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
| A: | Commensalism: members of one species gain benefits while those of the other species neither benefit nor are harmed. |
| B: | Mutualism: both organisms benefit from each other. |
| C: | Amensalism: one is harmed while the other is unaffected. |
| D: | Parasitism:one is harmed and the other benefits. |
2. 2
3. 3
4. 4
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)
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 |
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