Available Answers

1. 1.

   Multiple choice questions:

   1. Insecticides and pesticides protect crops from being destroyed by:
      1. excessive rain
      2. pests
      3. elephants
      4. drought
   2. Fishes use ________________ types of fins while swimming.
      1. sixteen
      2. three
      3. two
      4. four
   3. The largest part of the brain is the ___________________.
      1. cerebrum
      2. cerebellum
      3. medulla
      4. axon
   4. The joints of skull are:
      1. fixed
      2. movable
      3. gliding
      4. hinge
2. 2.

   Give one word for the following:

   1. The part of the seed that produces the stem and leaves.
   2. Breathing organ of mammals.
   3. The longest bone of the human body.
   4. The joint that allows the bones to move easily in a large circle.
3. 3.

   What are nerves and what work do they do?
4. 4.

   What is rib made up of?
5. 5.

   How does a frog breathe?