Formative Practice 14.1 (Form 4 Biology Textbook Exercise and Answer)

Question 1:
Why do organisms need to maintain their body shapes?

Body shape is important for movement and support, and enables organs in the body to function properly.

Question 2:
State two functions of the skeletal system to humans.

• To protect the internal organs in vertebrates (for example, the skull protects the human brain)

• To produce red blood cells (in the bone marrow)

Question 3:
For animals that move on the ground, what is the advantage of having legs below the body (for example, rats) compared to having legs at the side of the body (for example, crocodile)?

Animals with legs below the body (for example, mice) lift their body mass above the ground to reduce friction while moving.

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