Question

Name the scientist who discovered that decapitated coleoptile would resume photosensitivity and growth if severed tip is reattached through a gelatin disc

• A. Darwin
• B. Van Overbeek
• C. Boyson Jensen
• D. Paal

Answer 1

The correct option is C Boyson Jensen

A tropism is a growth movement by plant part in the direction of the stimulus. According to Boysen Jensen, the stimulus for phototropism, growth in response to light, is a chemical that is present at the tip of the coleoptile. He cut the tip of the coleoptile and the severed tip was reattached through a gelatin disc. The recapitated coleoptile resumed normal photosensitivity and growth.

So, the correct answer is C 'Boyson Jensen'