br Home » YEAR 8 BIOLOGY TOPICAL TEST

YEAR 8 BIOLOGY TOPICAL TEST

1. What is photosynthesis [2]

………………………………………………………………………………………

………………………………………………………………………………………

2. Name two things that must be there for photosynthesis to take place. [2]

………………………………………………………………………………………

………………………………………………………………………………………

3. draw a well labeled diagram to show the external structure of the leaf. [6]

4. The diagram below shows the internal structure of a leaf. Study it and answer questions that follow.

1. Complete the diagram by placing an appropriate word  in the boxes above using the words below. [10]

Palisade cell, stomata, air space, chloroplast, veins, waxy layer, upper epidermis, spongy layer, lower epidermis,

5. The diagram below was used to investigate rate of photosynthesis in 2 types of  sea plants

1. What observation was showing that the plant was photosynthesizing?[1]

………………………………………………………………………………………

………………………………………………………………………………………

………………………………………………………………………………………

2. What will happen to the number of bubbles produced if the plant was taken in to a place with:- [2]

1. Darkness

………………………………………………………………………………………

………………………………………………………………………………………

……………………………………………………………………………………

2. a lot of light

………………………………………………………………………………………

………………………………………………………………………………………

………………………………………………………………………………………

3. What variable would the student change in this experiment? [1]

………………………………………………………………………………………

………………………………………………………………………………………

………………………………………………………………………………………

4. What variable would the student keep constant in this experiment. [1]

………………………………………………………………………………………

………………………………………………………………………………………

………………………………………………………………………………………

6. State and explain 3 roles of roots [6]

………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………

………………………………………………………………………………………

………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………

7. State the role of the following in a root.  [2]

1. xylem

………………………………………………………………………………………

………………………………………………………………………………………

2. root hair cells

………………………………………………………………………………………………………………………………………………………………………………8. what is a balanced diet. [1]

………………………………………………………………………………………………………………………………………………………………………………

9. state the role of the following foods in a living thing. [3]

1. carbohydrate

………………………………………………………………………………………

………………………………………………………………………………………

2. Protein

………………………………………………………………………………………………………………………………………………………………………………3. fibre

……………………………………………………………………………………………………………………………………………………………………………

10. Apart from the 3 named foods above, name any other 3 nutrients required by the body.  [3]

………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………