Subphylum Urochordata

Q.

Do members of Subphylum Vertebrata possess a notochord?

Q.

What are the oldest living chordates?

Q.

Which class of chordates existed first on earth?

Q.

Diploblastic animals are with:

1. Undifferentiated mesoglea

2. All of these

3. Differentiated ectoderm

4. Differentiated endoderm

Q. Why hemichordates are not included under chordata

Q.

Members of the class Reptilia are–

1. Homoiothermic and amniotic

2. Poikilothermic and amniotic

3. Poikilothermic and anamniotic

4. Homoiothermic and anamniotic

Q.

The phylum name cnidaria is suggestive of the specialised defensive venom cells they contain called_____

1. Choanocytes

2. Gemmules

3. Cnidocytes

4. Pinacocytes

Q. Select the incorrect pair from the following
A. Adamsia - Sea anemone
B. Echinus - Sea urchin
C. Antedon - Sea cucumber
D. Cucumaria - Sea lily

1. Both A and D
2. Both C and D
3. Both B and D
4. Both A and B

Q. The members, which are exclusively marine and occur in shallow coastal water belongs to

1. Hexactinellida
2. Calcarea
3. Demospongia
4. All of the above

Q. Which of the following animal is marine?

1. Amoeba
2. Hydra
3. Sycon
4. Pheretima