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प्रश्न
Answer in detail.
How are the bones of birds different from those of other vertebrates?
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उत्तर
The bones of the birds are hollow and filled with large air cavities. This makes their skeleton light and enables them to fly. On the other hand, bones of other vertebrates are dense and solid and form a heavy skeleton.
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संबंधित प्रश्न
Write one difference between the following pair:
Porifera and Coelenterata.
Select the most appropriate answer.
Bones with large air cavities are present in
a. cnidarians.
b. fish.
c. annelids.
d. birds.
Differentiate between
flatworms and roundworms
Write a short answer.
Name the special organs of excretion in annelids?
Which ones of the following animals are invertebrates?
Housefly, Silverfish, Trout, Jellyfish, Whale, Penguin, Lizard and Sponge
Given below is an animal followed by three terms or features. Underline the term which does not match with the animal.
Monkey - External ear, sweat glands, lateral line.
Write important characters of chordates?
Write two main characters of the following animal and name the phylum it belongs to: Starfish
On the basis of characteristics given below, name the phyla: Unicellular, microscopic animals.
Giving birth to young ones is described as ______.
