Question

Question 10 Would a defoliated plant respond to photoperiodic cycle? Why?

Class XI Biology Chapter - Plant Growth and Development Page 254

Answer 1

Hey there,

A hypothesis is recognized long ago. This hypothesis states that the hormonal substance is formed in leaves , that is responsible for flowering.So , when in the absence of the leaves , perception of light will not occur. That means the plant will not responding to the light.

Hope it helps!

Answer 2

Answer:

• A defoliated plant will not respond to the photoperiodic cycle.
• It is hypothesised that the hormonal substance responsible for flowering is formed in the leaves, subsequently migrating to the shoot apices and modifying them into flowering apices.
• Therefore, in the absence of leaves, light perception would not occur, i.e., the plant would not respond to light.