The Discovery Of Phototropism

Question 1

What happens if a canary grass coleoptile tip is covered with foil?

Answer 1

The coleoptile no longer grows towards the light.

Question 2

What’s the role of the coleoptile?

Answer 2

It’s responsible for protecting the first leaf from hard soil.

Question 3

What’s the role of the blade?

Answer 3

It’s responsible for puncturing the tip of the coleoptile for exposure to light.