Assessment Answer

Answer


Section A
1 C
2 D
3 A
4 B
5 C
6 C
7 B
8 A
9 B
10 C
11 A
12 A
13 C
14 A
15 C
16 D
17 D
18 B
19 B
20 B

Section B
1 (a) The grasshoppers in beaker P and beaker R will die while the grasshopper in beaker Q will still be  
         alive.
   (b) The grasshoppers in beaker P and beaker R cannot breathe because their breathing structures are
         immersed in water.
   (c)  i.  Part of the body immersed
         ii. Grasshopper lives of dies
   (d) A grasshopper will die if its breathing structures are blocked.

2 (a) To study the response of a plant to water
   (b) i. The roots of the seedling grow towards the moist cotton wool.
        ii. Roots respond to the stimulus of water.
   (c) Roots of a plant respond to water because water is a basic need of the plant.

3 (a) Sharp spines on its body.
   (b) It is withdrawing its limbs and head into its shell.
   (c) Animal Q has a stings. A large number of them live together in a group.

4 (a) To study how plants protect themselves from enemies
   (b) The yam leaf is poisonous while the lime leaf is not poisonous.
   (c) To protect itself from enemies
   (d) Mushroom