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प्रश्न
Fill in the blank.
Annelids have special organs of excretion called ..............
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उत्तर
Annelids have special organs of excretion called nephridia.
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संबंधित प्रश्न
Give two examples of Reptiles:
Write one difference between the following pair:
Arthropoda and Mollusca
Fill in the blank.
.................. do not have a backbone, while vertebrates have it.
Fill in the blank.
The animals without a backbone whose body is soft and often covered by a hard shell are .................
Differentiate between
aves and mammals
Given below are groups of animals, and their characteristics features. Some of the features are incorrect. Identify the odd one out in each.
| Group | Characteristic features | Odd one out |
| Porifera | porous animals, have tentacles, fixed to surface | |
| Amphibia | cold-blooded, lungs in adults, scaly skin | |
| Aves | cold-blooded, wings, feathers, bones with large air spaces | |
| Pisces | live in water, scaly skin warm-blooded, fins for swimming |
Given below is an animal followed by three terms or features. Underline the term which does not match with the animal.
Monkey - External ear, sweat glands, lateral line.
Which is not a feature of chordates?
List the integumentary glands of mammals.
Why are eggs of reptiles covered with shells unlike the eggs of amphibians?
