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प्रश्न
Fill in the blank.
The animals without a backbone whose body is soft and often covered by a hard shell are .................
उत्तर
The animals without a backbone whose body is soft and often covered by a hard shell are molluscs.
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संबंधित प्रश्न
Fill in the blank.
Some .....................have two pairs of legs per segment.
Select the most appropriate answer.
Bones with large air cavities are present in
a. cnidarians.
b. fish.
c. annelids.
d. birds.
State if the following statement is true or false. Correct the statement if it is false.
Insects belong to the amphibian group of animals.
Write a short answer.
How are the bones of birds different from those of other vertebrates?
Answer in detail.
Write two characteristics of amphibians.
Answer in detail.
How do fish exchange gases?
Name the various classes of chordates with two examples.
The notochord extends throughout the entire length of the body is ______.
Assertion (A): Mammals give birth to their young ones.
Reason (R): Platypus is an egg-laying mammal.
What are pneumatic bones?