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प्रश्न
What are adaptations in fishes due to which they are aquatic?
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उत्तर
Certain adaptation characteristics in fish, due to which they are aquatic, include:
(i) Presence of gills for respiration
(ii) Fins for locomotion (swimming) and balance with a streamlined or spindle-shaped body
(iii) Cold-blooded (ecothermic)
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संबंधित प्रश्न
How do annelid animals differ from arthropods?
How are the criteria for deciding divisions in plants different from the criteria for deciding the subgroups among animals?
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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Tick (✓) the appropriate answer:
Scientist who introduced binomial nomenclature is
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Invertebrates and Vertebrates
Write down four main characters of Annelida.
Write down four characters of Osteichtyes and give two examples.
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(a) Cartilaginous fishes and bony fishes ;
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|
Column I (Group) |
Column II (Animals) |
|
Annelida |
Pigeon |
|
Porifera |
Snake |
|
Mollusca |
Earthworm |
|
Reptilia |
Sponge |
|
Amphibia |
Octopus |
|
Pisces |
Trout |
|
Mammal |
Rabbit |
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