Exams › NEET › Biology

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

1. vessels and tracheid differentiation
2. leaf abscission
3. annual plants
4. floral parts

Correct answer: leaf abscission

Solution

Leaf abscission is a classic example of senescence acting as an active developmental process: cells in the abscission zone undergo controlled changes that lead to leaf detachment. The other options involve differentiation or lifespan patterns, but not the clearest visible sign of senescence.

Related NEET Biology questions

• Start of synthesis of chlorophyll in a plant seedling is stimulated by
• Typical growth curve in plants is:
• Coiling of garden pea tendrils around any support is an example of:
• Opening of floral buds into flowers, is a type of:
• Movement of leaves of Sensitive Plant, Mimosa pudica are due to:
• If a tree, flowers thrice in a year (Oct., Jan. and July) in Northern India, it is said to be:

⚔️ Practice NEET Biology free + battle 1v1 →