Question

IX. Answer the following questions :

1. Why do animals need locomotion
2. How is locomotion brought about in humans?
3. What are the main functions of the skeletal system?
4. How is locomotion different from movement?
5. How does a cockroach move?
6. How does locomotion take place in an earthworm and a snail?
7. What is a ball and socket joint?
8. How does a fish swim?
9. Name the adaptations found in birds for flying,
10. Name the three main types of joints found in our body, giving examples of their occurrence
in the body.
11. How do muscles help in movement in the case of our arms?
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Answer 1

Answer:

1 For many animals, the ability to move is essential for survival and, as a result, natural selection has shaped the locomotion methods and mechanisms used by moving organisms.

2.locomotion in human beings s brought about by limbs or muscles search of food and shelter, protecting themselves, to meet their relatives. Such muscular movements is brought about by the contraction of muscle fibres

3.protecting internal organs, providing attachment surfaces for skeletal muscles, allowing body movements, producing blood cells, storing minerals, helping to maintain mineral homeostasis, and producing endocrine hormones

4.Locomotion is the displacement of a body from one place to another. On the contrary, movement is the displacement of a body or a part of the body from its original position.

5.They move back and forth to either speed the roach up or slow it down. The very long metathoracic legs are the roach's back legs, and they move the roach forward. Using its metathoracic legs, a roach can move about 50 body lengths in a second. A human moving that quickly would be running about 200 miles per hour.

Answer 2

Explanation:

Aphids are insects that insert their needle like mouth parts into plants. The source of this liquid from plants is probably

Need which type of cells???