Question

The change that occurs is apex at the time of flowering is

• A. Meristem gets destroyed
• B. Vegetative apex changes into reproductive apex
• C. Meristem decreases its activity
• D. All of the above

Answer 1

Answer: (B)

Vegetative apex changes into reproductive apex

• At the time of flowering, the vegetative shoot apex transforms into reproductive shoot apex (reproductive phase).
• This transformation of shoot apex is induced by florigen and light.
• The summit zone of reproductive shoot apex is active as the rate of cell division is greater and it forms stamens & carpels.
• Whereas, the flank zone is less active in reproductive shoot apex and it forms sepals and petals.
• So, the correct answer is 'Vegetative apex changes into reproductive apex'.