Q. No.
Which of the following is not an Echinoderm character?
(1) Exclusively marine
(2) Radial symmetry in adults
(3) Protostome embryonic development
(4) Water vascular system
Birds are not characterized by:
| 1. | Forelimbs modified into wings |
| 2. | Fully ossified endoskeleton |
| 3. | Skin dry without glands except for oil gland |
| 4. | Oviparous and external fertilization |
Echinoderms are not characterized by:
1. An absence of excretory system
2. Bisexual animals
3. Usually external fertilization
4. Indirect development with free swimming larva
Identify the incorrectly matched pair:
|
|
Animals |
Feature present in both |
|
1. |
Balanoglossus and Pinctada |
Open circulatory system |
|
2. |
Branchiostoma and Ascidia |
Persistent notochord |
|
3. |
Aplysia and Pheretima |
True coelom |
|
4. |
Gorgonia and Pennatula |
Cnidoblasts |
Pteropus is a/an:
1. Limbless amphibian
2. Extinct reptile that evolved into mammals
3. Bony fish that migrates from sea water to fresh water for breeding
4. Mammal with flight
The structure shown in the given diagram is characteristically seen in the Phylum:
1. Porifera
2. Ctenophora
3. Cnidaria
4. Molluska
An animal with the following body wall organization will not have:
| 1. | Cepahilzation |
| 2. | Three germ layers |
| 3. | Bilateral symmetry |
| 4. | A complete digestive tract |
In some Bilateria, the body is of many segments that show serial repetition of parts. Such segments are called as:
(1) Myotomes
(2) Metameres
(3) Proglottides
(4) Comb plates
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