Q. No.What is common to the list of animals given in the box?
Sycon, Fasciola, Ancylostoma, Pheretima, Periplaneta, Carcharodon, Macropus
1.
Monoecy
2.
Internal fertilization
3.
Oviparity
4.
Triploblastic organization
Sycon, Fasciola, Ancylostoma, Pheretima, Periplaneta, Carcharodon, Macropus
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Which of the following will be defining property of mammals?
1. They give birth to young ones
2. They nourish their young with milk
3. They have a uterus
4. They have a thick coat of hair
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Consider the following traits:
I. Tripartite body division
II. Diverticulum of foregut, stomochord
III. Deuterostome embryonic development
An animal that can show all these traits can be:
| 1. | Ascidia | 2. | Branchiostoma |
| 3. | Asterias | 4. | Balanoglossus |
Identify the correct statements regarding arthropods:
I. All arthropods use internal fertilization
II. All arthropods lay eggs
III. All arthropods' embryos are segmented
| 1. | Only II | 2. | Only III |
| 3. | Only I and II | 4. | None |
The second intermediate host required by Clonorchis sinensis is:
| 1. | A snail | 2. | A fish |
| 3. | A crustacean | 4. | A coral |
Consider the two statements:
I. The similarity between notochord and stomochord is due to convergent evolution.
II. Both arise from a common ancestry and exhibit homology.
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. Only I is correct
4. Both I and II are incorrect
All mollusks do not have:
| I. Open circulatory system | II. A shell | III. Radula |
| 1. | I and II only | 2. | I and III only |
| 3. | II and III only | 4. | I, II and III |
Ospharidia in mollusks are:
| 1. | Chemical sensors | 2. | Balancing receptors |
| 3. | Photoreceptors | 4. | Chromatophores |
Identify the incorrect statement regarding echinoderms:
1. Echinoderms evolved from animals with bilateral symmetry.
2. Echinoderms have a mesodermal skeleton composed of calcareous plates or ossicles.
3. Most echinoderms are not able to reproduce asexually and regenerate tissues, organs, and limbs.
4. Echinoderms are also the largest phylum that has no freshwater or terrestrial (land-based) representatives.
The second largest group of dueterostomes are:
| 1. | Echinoderms | 2. | Hemichordates |
| 3. | Chordates | 4. | Arthropods |
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