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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
Fill in the blank.
Most arthropods have a tough outer body covering called ..........................
Select the most appropriate answer.
Bones with large air cavities are present in
a. cnidarians.
b. fish.
c. annelids.
d. birds.
Fill in the blank.
The animals without a backbone whose body is soft and often covered by a hard shell are .................
Fill in the blank.
Vertebrates which spend a part of their life on land but reproduce in water are called ..................
Differentiate between
amphibians and Pisces
State if the following statement is true or false. Correct the statement if it is false.
Insects belong to the amphibian group of animals.
State if the following statement is true or false. Correct the statement if it is false.
Reptiles have a scaly skin. They lay eggs with a hard shell and are warm-blooded animals.
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 |
On the basis of characteristics given below, name the phyla: Unicellular, microscopic animals.
On the basis of characteristics given below, name the phyla: Body cylindrical, segmented, coelomate.
