controlling plant growth

Question 1

what is a giberellin

Answer 1

plant hormone which control stem elongation and seed germination

Question 2

what is auxin

Answer 2

are plant hormones which are responsible for regulating plant growth

Question 3

what is apical dominance

Answer 3

inhibition of lateral buds further down the shoot by chemicals produced by the apical bud at the tip of the plant shoot

Question 4

where is the apical meristem

Answer 4

at the tip of the plant

Question 5

where is the intercalary meristem

Answer 5

in the middle of the plant

Question 6

where is the lateral meristem

Answer 6

at the lateral areas of the plant

Question 7

what happens to the growth of a plant when you break the apex off

Answer 7

side branches grow from lateral buds that were previously dormant (resting).

Question 8

how do gibberellin promote seed germination

Answer 8

when seed absorbs water, the embryo releases giberellin which then travels to the endosperm region of seed. The giberellin produces amylase breaking down starch into glucose.

the glucose is then a respiratory substrate for the embryo.