Column-I | Column-II | ||
A. | Cyclostomata | (i) | Mouth without jaws |
B. | Chondrichthyes | (ii) | Exclusively oviparous |
C. | Aves | (iii) | Gills without operculum |
D. | Mammalia | (iv) | Unique in possessing hair |
Statement (A): | Osteichthyes includes both marine and freshwater fishes with a bony endoskeleton. |
Statement (B): | Their body is streamlined and their mouth is ventral in position. |
a. | Phylum vertebrata is divided into two superclasses - Pisces and Tetrapoda. |
b. | Superclass Pisces includes cyclostomes, cartilaginous and bony fishes. |
c. | In bony fishes, air bladder is present which regulates buoyancy. |
d. | Body of all amphibians is divisible into head neck and trunk. |
e. | Both fishes and amphibians are poikilothermous animals. |
1. | a, b, c, d | 2. | a, b, c, d, e |
3. | a, b, d | 4. | c, d, e |
Column-I | Column-II | ||
a. | Three-chambered heart with one incompletely divided ventricle | (i) | Myxine |
b. | Jawless vertebrate with a cartilaginous vertebral column | (ii) | Chaetopleura |
c. | Soft, unsegmented body and has a structure that helps in both respiration and excretion | (iii) | Calotes |
d. | Ventral mouth, gills without operculum, and skin with placoid scales | (iv) | Scoliodon |
Column-I | Column-II | ||
a. | Planaria | (i) | Indirect development |
b. | Ctenoplana | (ii) | Gills are covered by an operculum on each side |
c. | Petromyzon | (iii) | Possess high regeneration capacity |
d. | Exocoetus | (iv) | Migrates for spawning to freshwater |
Match each item in Column I with one item in Column II and chose your answer from the codes given below:
Column I Feature |
Column II Phylum |
(a) Lateral line system (b) Water vascular system (c) Radula (d) Comb plates (e) Parapodia |
(i) Ctenophora (ii) Mollusca (iii) Echinodermata (iv) Osteichthyes (v) Annelida |
Codes
(a) (b) (c) (d) (e)
1. (i) (ii) (iii) (iv) (v)
2. (iv) (iii) (ii) (i) (v)
3. (iv) (iii) (i) (v) (ii)
4. (iii) (ii) (i) (v) (iv)
Assertion (A): | Claspers are present in males of the class Chondrichthyes. |
Reason (R): | Claspers assist copulation. |
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. |