Question

Senescence as an active developmental cellular process in the growth and functioning of a flowering plant, is indicated in?

• A. annual plants
• B. leaf abscission
• C. vessels and tracheid differentiation
• D. floral parts

Answer 1

The correct option is B

leaf abscission

The correct option is option B.

Explanation for correct option:

1. The period between reproductive maturity and death of the plant part is known as senescence.
2. It is indicated in leaf abscission.
3. The leaves of the plant are shed first with the onset of senescence.

Explanation for incorrect options:

Option A:

Annual plants complete their germination to seed production in one growing season and then die.

Option C:

1. Xylem tissues are called tracheary elements.
2. The tracheary elements die at maturity.

Option D:

Floral parts are separated from the plant through the process of abscission.

Final answer: Leaf abscission indicates the senescence of a flowering plant.