1. | Cnidaria | 2. | Aschelminthes |
3. | Hemichordata | 4. | Echinodermata |
Column-I | Column-II | ||
(a) | Exocoetus | (i) | Tympanum represents the ear |
(b) | Trygon | (ii) | Marine bony fish |
(c) | Salamandra | (iii) | Air sacs connected to lungs |
(d) | Aptenodytes | (iv) | Cartilaginous marine fish |
1. | Porifers | Body with pores and canals in walls |
2. | Coelenterates | Presence of cnidoblasts |
3. | Platyhelminthes | Flat body and suckers |
4. | Arthropods | Chitinous exoskeleton, comb plates |
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 |