Diffusion and Hormones

Question 1

What is plasmolysis?

Answer 1

Plasmolysis is the contraction of cells within plants due to the loss of water through osmosis. It is the cell membrane peeling off of the cell wall and the vacuole collapsing. Plasmolysis occurs when a plant cell’s membrane shrinks away from its cell wall

Question 2

What is osmosis

Answer 2

If a high solute concentration builds
up on one side of a membrane, water will
move across the membrane to it.

Question 3

What are the consequences of osmosis?

Answer 3

Water in  cells turgidCell wall prevents bursting

Water out  protoplasm pulls away from cell wall (plasmolysis).

Question 4

What is apical dominance?

Answer 4

terminal bud prevents axillary bud growth

Question 5

What is the cause of apical dominance?

Answer 5

Cause: Auxin-like inhibitor

As distance from terminal bud increases, concentration drops until lateral bud suppression stops.