Plant Growth Textbook

Question 1

An apple changes colour from green to red.

Answer 1

Ethylene

Question 2

A seed germinates in the spring time

Answer 2

Gibberellins

Question 3

Roots grow downwards into the soil. Shoots grow upwards towards the sun

Answer 3

Auxins

Question 4

A tree grows taller.

Answer 4

Auxins, Cytokinins, Gibberellins

Question 5

A seed dropped into the soil in late fall stays inactive until the springtime.

Answer 5

Abscisic acid

Question 6

Nastic Response

Answer 6

Response of plant where movement is not associated with direction of stimuli
Flower petals open during day and close at night.

Question 7

Fertilization in gymnosperms

Answer 7

Occurs after pollination and germination.

fusion of male gametes and female gametes to make diploid zygote

Question 8

Fertilization in angiosperms

Answer 8

pollen grain begins to grow a pollen tube

Question 9

Seed Structure

Answer 9

embryo, nutritive tissue, and a protective coat
angipserms have furit

Question 10

Rhizomes (modified stems)

Answer 10

corms, stolons and “eyes” on tubers

Question 11

Suckers (new shoots):

Answer 11

Grow from a plant’s roots and is capable of forming new plants

Question 12

fragments of roots or shoots:

Answer 12

Dandelion can grow from fragments left in soil