How many types of Tropisms are there?

• 1
• 2
• 3
• 4

What is Phototropism?

• Growth or movement away from light
• Growth or movement in response to light
• Growth or movement towards light

Gravity can affect how a plant grows.

• True
• False

Thigmotropism is a response to...

• ...light.
• ...touch.
• ...gravity.

A plant growing away from light is phototropism, a plant growing towards light is also phototropism.

• The first one is true
• The second one is true
• both are true

Positive gravitropism is observed in roots.

• True
• False

An example of positive thigmotromism is...

• ...vines growing on trellises.
• ...roots growing away from all objects it comes in contact with.

Turgor pressure is a force exerted on...

• ...the cell wall by water within the cell
• ...water within the cell by the cell wall.
• ...water within the cell.

Turgor pressure can make a plant _______.

• wilt
• stand up
• explode
• all of the above

When water moves through the cell, turgor pressure is changed.

• True
• False