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प्रश्न
Answer in detail.
List two notable characteristic of birds which is not found in any other group of animals?
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उत्तर
The most notable characteristic of birds that are not found in any other group of animals is the presence of feathers. They are the only animals on earth that have a backbone as well as feathers that cover their entire body.
Also, their skeleton is light as their bones have air cavities and are hollow. They also have beaks with no teeth.
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संबंधित प्रश्न
Tick (✓) the appropriate answer:
Identify the aquatic animal with scaly skin which breathe with gills
Select the most appropriate answer.
The body temperature of warm-blooded animals
Select the most appropriate answer.
Bones with large air cavities are present in
a. cnidarians.
b. fish.
c. annelids.
d. birds.
Find the odd one out. Give reason.
frog, shark, seahorse, carp
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.
Give a reason for the following.
Why do adult amphibians tend to stay near water?
Name the various classes of chordates with two examples.
How do chordates differ from non-chordates?
Which group of animals have following characteristics: Multicellular body not organized into tissues.
Assertion (A): Mammals give birth to their young ones.
Reason (R): Platypus is an egg-laying mammal.
