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प्रश्न
Fill in the blank.
Vertebrates which spend a part of their life on land but reproduce in water are called ..................
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उत्तर
Vertebrates which spend a part of their life on land but reproduce in water are called amphibian
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संबंधित प्रश्न
Fill in the blank.
.................. do not have a backbone, while vertebrates have it.
Select the most appropriate answer.
Organs of excretion in annelids are
Fill in the blank.
The backbone of vertebrates is made up of a number of small bones called .....................
Fill in the blank.
Fishes obtain oxygen from water through ......................
Match the following.
| Group | Characteristics | ||
| 1. | Molluscs | a. | Feed milk to young ones, warm-blooded |
| 2. | Spongers | b. | bag-like body with tentacles around the opening |
| 3. | Flatworms | c. | fins, gills and cold-blooded |
| 4. | mammals | d. | body with large opening and many small pores all over |
| 5. | Fish | e. | jointed legs, exoskeleton |
| 6. | cnidarians | f. | have only one opening |
| 7. | arthropods | g. | hard shell, soft body |
| h. | cylindrical, unsegmented body with mouth at one end and anus at the posterior end |
Answer in detail.
List two notable characteristic of birds which is not found in any other group of animals?
Mention any one major similarity and one major difference in the following pairs of an animal:
Insects and Birds
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 group of animals have following characteristics: Body soft, covered by mantle and a calcareous shell.
The biggest vertebrate animal is the ______.
