Question

Long Answer Questions (Answer in 60-70 words).
1. How do the following organisms move?
(a) earthworm (b) cockroach
(c) snake
2. Explain the structure of ball and socket joint. Give two examples of such joints in the human
body. What kind of movement does such a joint allow?
3. Explain the structure of the following:
1 backbone
2 ribcage.
What is the role of these parts of skeletal system in the human body?
4. How do muscles help in movement of limbs?​

Answer 1

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