Chapter 29.2- Plant hormone(incomplete)

Question 1

What is the difference between plant and animal cells?

Answer 1

Plant cells are in a fixed place and location, the cells’ identity is determined by location

Question 2

What are hormones and how do they effect plant growth and differentiation?

Answer 2

Hormones are chemical signals that affect and influence growth.

1. They help establish basic plant patterns like the arrangement of leaves
2. They control plant growth from auxiliary buds

Question 3

Five major hormones: Auxin and what is its role?

Answer 3

• causes shoots to elongate
• also causes plant patterns and spaces
• helps create the formation

Question 4

Five major hormones: Gibberellic acid

Answer 4

increases internode by elongating reduces force needed to grow cell wall

Question 5

Five major hormones: cytokinins

Answer 5

• promotes cell division
• synthesized at the root meristem and axial buds
• and regulates growth

Question 6

How does auxin movement influence the placement of new leafs primordia?

Answer 6

1. Auxin synthesized in dividing cells within the shoot meristem migrates to the outlayer of the tip
2. high concentration of auxin triggers leaf growth
3. The movement of auxin to the leaf causes a gradient stopping a leaf to form nearby creating space

Question 7

What is apical dominance?

Answer 7

Apical dominance is when the shoot meristem suppress the growth of auxiliary buds in order to avoid overlapping when branching

cytokinson = stimulates branching auxin suppresses it

Question 8

Fiver major hormones: Absidic acid

Answer 8

• reduces growth when cell is stressed
• triggered by dryed roots causes stomata to close