Identify the incorrectly matched pair:
Population interaction |
Species A |
Species B |
|
1. |
Mutualism |
+ |
+ |
2. |
Predation |
+ |
- |
3. |
Parasitism |
- |
- |
4. |
Commensalism |
+ |
0 |
Statement I: | Parasitism has evolved in many taxonomic groups from plants to higher vertebrates. |
Statement II: | Many parasites have evolved to be host-specific and both tend to co-evolve. |
Statement III: | All parasites have only one primary and one intermediate host. |
Statement IV: | Only a few of the parasites harm their hosts. |
1. | 1 | 2. | 2 |
3. | 3 | 4. | 4 |
I: | Lice on humans and ticks on dogs |
II: | Marine fish infested with ectoparasitic copepods |
III: | Female Anopheles biting human beings |
IV: | Tapeworm in the human alimentary canal |
1. | Only I and II | 2. | Only III and IV |
3. | Only I and III | 4. | Only II and IV |
Statement I: | The morphological and anatomical features of endoparasites are greatly simplified but their reproductive potential is very high. |
Statement II: | Unlike ectoparasites, endoparasites live inside the host body at different sites and their life cycles are more complex. |
The human liver fluke depends on two intermediate hosts that are:
1. | A crustacean and a fish |
2. | A snail and a fish |
3. | An echinoderm and a fish |
4. | Fishes of two different species |
Cuckoos laying their eggs in the nests of crow is an example of:
1. | Ectoparasitism | 2. | Endopararsitism |
3. | Hyperparasitism | 4. | Brood parasitism |
All the following relations are examples of commensalism except:
1. | Sea anemone and clown fish |
2. | Cattle egret and grazing cattle |
3. | Barnacles growing on the back of whale |
4. | Cuscuta growing on hedge plants |