science
Grade-4-
Easy
Question
Frogs have moist skin because
- They live in water
- They live in areas where it rains throughout the year
- They use their saliva to stay moist
- Their skin is covered with mucus glands
Hint:
Frogs have feature to respire through skin also.
The correct answer is: Their skin is covered with mucus glands
Their skin is covered with mucus
- Frogs have skin covered with mucus layer to prevent from drying.
- The skin helps in exchange of gases in frogs.
- The mucus layer prevents skin from drying.
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Tongue also helps to generate ____________.
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Tongue also helps to generate ____________.
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- Saliva digests starch from the food in mouth.
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- Horns are the protecting organs of the animals.
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- External organs:- present outside the body.
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Which is an example of an external organ?
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Herat is an internal organ.
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- Heart is an internal organ which has function of pumping the blood to whole of our body.
