1. | Penguin: Aptenodytes | 2. | Tortoise: Testudo |
3. | Platypus: Macropus | 4. | Angel fish: Pterophyllum |
Assertion (A): | Hemichordates are not chordates. |
Reason (R): | They do not have a notochord. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | Both (A) and (R) are False. |
1. | Cyclostomata | 2. | Chondrichthyes |
3. | Amphibia | 4. | Reptilia |
Column I | Column II | ||
A. | Comb plates | P. | Cnidaria |
B. | Metagenesis | Q. | Mollusca |
C. | Canal system | R. | Sponges |
D. | Radula | S. | Ctenophora |
A | B | C | D | |
1. | S | P | R | Q |
2. | P | S | R | Q |
3. | P | S | Q | R |
4. | S | P | Q | R |
1. | Obelia | Metagenesis |
2. | Planaria | Free living with high regeneration capacity |
3. | Ancylostoma | Acoelomate |
4. | Nereis | Parapodia |
1. | Echinodermata | Water vascular system |
2. | Hemichordata | Stomochord |
3. | Cyclostomata | Cartilaginous jaw |
4. | Cephalochordata | Notochord persistent throughout life |
I: | Platyhelminthes |
II: | Mollusca |
III: | Annelida |
1. | Only I | 2. | Only II |
3. | Only II and III | 4. | I, II, and III |
1. | Choanocyte and helps sponges in movement of water through their canal system |
2. | Choanocyte and helps sponges in reproducing asexually under favourable conditions |
3. | Cnidocyte and helps sponges in catching their prey by paralyzing them |
4. | Colloblast and helps sponges in sticking to a surface |
a: | body bears eight external rows of ciliated comb plates, which help in locomotion. |
b: | reproduction takes place only by asexual means. |
c: | digestion is both extracellular and intracellular. |
d: | sexes are separate. |
1. | a and c only | 2. | b and d only |
3. | a, b and c only | 4. | a, b and d only |