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प्रश्न
Fill in the blank.
Fishes obtain oxygen from water through ......................
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उत्तर
Fishes obtain oxygen from water through gills.
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संबंधित प्रश्न
Select the most appropriate answer.
The finger-like structures present around the mouth of cnidarians are called
Fill in the blank.
The backbone of vertebrates is made up of a number of small bones called .....................
Fill in the blank.
Vertebrates which spend a part of their life on land but reproduce in water are called ..................
State if the following statement is true or false. Correct the statement if it is false.
Insects belong to the amphibian group of animals.
Find the odd one out. Give reason.
ant, cockroach, spider, dragonfly
Answer in detail.
You are asked to classify an animal in the correct group. The animal has a soft body and arm-like tentacles. You dissect the animal and find that it has an internal shell. Is the animal a cnidarian or a mollusc? Explain your answer.
Given below is an animal followed by three terms or features. Underline the term which does not match with the animal.
Fish - Gills, paired fins, ear drum
______ is the unique characteristic feature of mammals.
Why are eggs of reptiles covered with shells unlike the eggs of amphibians?
Write a note on mammals.
