can i please get the correct answers to the following

8. Removal of the apical bud from the shrub is a practice that results in the development of the lateral buds which later from the branches.

(a) Give reasons for the development of the lateralbraches after the removal ofthe apical bud

(b) Suggest one application of this practice

(c) What is the importance of this practice?

9. In an experiment some germination seeds were placed in large airtight flask and left for four days

(a) Suggest the expected changes in the composition of gases in the flask on the fifth day

(b) Give four reasons for your answer in(a) above

(c) Name two factors that cause dormancy in seeds

10. (a) Distinguish between epigeal and hypogeal germination ( 1 mark)

(b) Why is oxygen necessary in the germination of seeds? ( 2 marks)

11. An experiment was carried out to investigate the effect of hormones on growth of lateral buds of three pea plants

The shoots were treated as follows:

Shoot A- Apical bud was removed

Shoot B - Apical bud was removed and gibberellic acid placed on the cut shoot

Shoot C- Apical bud was left intact.

The length of the branches developing from the lateral buds were determines at regular intervals

The results obtained are as shown in the table below

Time (days) Length of branches in mm

Shoot A Shoot B Shoot C

0 3 3 3

2 10 12 3

4 28 48 8

6 50 90 14

8 80 120 20

10 118 152 26

(a) Using the same axes, draw graphs to show the length of branches against time

( 8 marks)

(b) (i) What was the length of the branch in shoot B on the 7th day? ( 1 mark)

(ii) What would be the expected length of the branch developing from shoot A on the 11th day? ( 1 mark)

(c) Account for the results obtained in theexperiment ( 6 marks)

(d) Why was shoot C included in the experiment? ( 1 mark)

(e) What is the importance of gibberallic acid in agriculture? ( 1 mark)

(f) State two physiological processes that are brought about by the application of gibberellic acid on plants. ( 2 marks)

12.(a) State tow environmental conditions that can cause seed dormancy

(b) Name the part of a bean seed that elongates to bring about epigeal germination

( 1 mark)