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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 .................
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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.
...................... live in the digestive tract of many vertebrates including human beings.
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.
A tapeworm is a flatworm that lives in the human intestine.
Find the odd one out. Give reason.
snail, oyster, earthworm, octopus
Answer in detail.
Write two characteristics of birds.
Write important characters of chordates?
Which one is the most striking or (common) character of the vertebrates?
Karl Von Linne was involved with which branch of science?
What are pneumatic bones?
How are the reproductive characteristics of mammals different from those of aves?
