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Subject :NSO    Class : Class 6

Select the correct statement about skeletal system in some animals.

AEarthworms have liquid skeleton i.e., the liquid trapped in body spaces keeps the body firm.
BSnails and sharks have only a skeleton outside their body i.e., an exoskeleton.
CSnakes and birds have hollow bones which reduces their body weight and makes movement easier.
DCockroaches have an endoskeleton made of chitin.

Ans 1:

Class : Class 6

Ans 2: (Master Answer)

Class : Class 1


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