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
Operculum and an air bladder are present in :
1. Clarias
2. Pristis
3. Trygon
4. Carcohrodon
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 |
Which of the following is not an arthropod characteristic?
1. Jointed appendages
2. Non-segmented bodies
3. Periodic moulting
4. Articulated exoskeleton
The character that gives the Phylum Chordata is shown by:
1. A
2. B
3. C
4. D
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. Cephalization
2. Three germ layers
3. Bilateral symmetry
4. A complete digestive tract
Consider the following statements:
I. Platyhelminths are acoelomates and use protonephridia as excretory structures.
II. Aschelminthes are pseudocoelomates and have bilateral symmetry.
III. Adult echinoderms show radial symmetny and exhibit deuterostome type embryonic development.
Which of the above statements are true?
1. I and II only
2. I and III only
3. II and III only
4. I, II and III