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प्रश्न
Name three animals (belonging to different classes) which breathe by means of lungs but have no external ears (pinnae).
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उत्तर
- Class Amphibia: Tree frog
- Class Reptilia: Cobra
- Class Aves: Duck
संबंधित प्रश्न
What are the difficulties that you would face in classification of animals, if common fundamental features are not taken into account?
Match the following:
| Column I | Column II | ||
| (a) | Operculum | (i) | Ctenophora |
| (b) | Parapodia | (ii) | Mollusca |
| (c) | Scales | (iii) | Porifera |
| (d) | Comb plates | (iv) | Reptilia |
| (e) | Radula | (v) | Annelida |
| (f) | Hairs | (vi) | Cyclostomata and Chondrichthyes |
| (g) | Choanocytes | (vii) | Mammalia |
| (h) | Gill slits | (viii) | Osteichthyes |
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Give scientific reasons.
Body temperature is not constant in amphibians.
