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प्रश्न
Answer in detail.
How do fish exchange gases?
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उत्तर
Fish exchange gases in water through gills. Gills enable the fish to obtain oxygen dissolved in the water.
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संबंधित प्रश्न
Give names of two animals which are found as parasites inside the human intestine.
Answer in detail.
How are the bones of birds different from those of other vertebrates?
Mention any one major similarity and one major difference in the following pairs of an animal:
Whales and Fishes
Match items in Column A with the appropriate items in Column B
| Column A | Column B |
| Cobra | Protozoa |
| Peacock | Amphibia |
| Earthworm | Annelida |
| Euglena | Reptilia |
| Frog | Porifera |
| Spongilla | Aves |
Which one is the most striking or (common) character of the vertebrates?
The notochord extends throughout the entire length of the body is ______.
Animals that possess notochord are called ______.
______ formed during embryonic development.
What are pneumatic bones?
How are the reproductive characteristics of mammals different from those of aves?
