form2 transport in plants questions

TRANSPORT IN PLANTS

PAST KCSE QUESTIONS ON THE TOPIC

1. In an experiment, a leafy shoot was set up in a photometer and kept in a dark

room for 2 hours. The set up was then transferred to a well-lit room for 2 hours.

a) What was the aim of this experiment? (1mk)

b) Explain the results which would be expected in each of the two

experiments conditions. (3mks)

2. Explain how drooping of leaves on a hot sunny day is advantageous to plant.

(2mks)

3. Explain how environmental factors affect the rate of transpiration in flowering

plants. (20mks)



4. The diagram below represents a transverse section of a young stem.




a) Name the parts labeled A and B (2mks)

A___________________

, B____________________

b) State the functions of the parts labeled C, D and E

C________________

D_______________

E_______________

c) List three differences between the section shown above and one

that would be obtained from the root of the same plant (3mks)



5. The diagram below represents the pathway of water from soil into the plant.




a) Name the structures labeled K and L

K_______________

L_______________ (2mks)

b) Explain how water from the soil reaches the structure labeled L.

(5mks)

c) Name the process by which mineral salts enter into the plant.

(1mk)

6. State two ways in which xylem are adapted to their function. (2mks)