13.5/.6 - Plant Growth

Question 1

Apical vs Lateral Meristems

Answer 1

Apical - responsible for primary growth - results in increase in length of plant

Lateral - responsible for secondary growth - results in increase of diameter of plant

Question 2

Tropisms

Answer 2

changes in growth of plant in response to stimulus

Question 3

Phototropism, gravitropism, & thigmotropism?

Answer 3

Phototropism - reacts to light

Gravitropism - reacts to gravity

Thigmotropism - reacts to touch

Question 4

Plant growth regulators

Answer 4

Chemicals produced by plants that regulate growth & different action of cells

Question 5

Types of plant growth regulators and what they do

Answer 5

Auxins - promotes cell elongation, produced in shoot apical meristem

Gibberellins - induces flowering & fruit productions

Cytokinins - stimulates cell division

Ethylene - stimulates fruit ripening as well as many other plant stages

Abscisic acid (ABA) - inhibits growth