Question

Some plants where flowering occurs more than once, the inter- flowering period is known as
A)Juvenile phase
B)Vegetative phase
C)Mature Phase
D)Senescent phase

Answer 1

Hint: Flowering plants or angiosperms go through different stages- germination, growth, reproduction, pollination, and seed spreading stages and death.

Complete answer:
Plants are autotrophs and are the primary producers. Plants produce food by the process of photosynthesis. Angiosperms or flowering plants reproduce by the production of flowers which has the male counterpart (androecium) and the female counterpart (gynoecium). The androecium produces many pollen grains which fall on the stigma of the gynoecium. Fertilization of the sperm cells with the egg occurs inside of an ovule. After fertilization occurs, each ovule develops into a seed. Then a plant germinates from seed.

Option A: The plants which flower more than once, their inter-flowering period represents the juvenile phase. Although they pass the mature phase of flowering for the first time. But for flowering for the next time, they require further development. Therefore this is the correct option.

Option B: The vegetative phase is sometimes referred to as the juvenile phase, which is a period of time when plants are not capable of flowering. Plants start by seed and have a juvenile phase and they must develop to a certain maturity before they attain the capacity to flower. Therefore this is an incorrect option.

Option C: Mature phase of a plant is when it has the ability to flower and reproduce. In plants where flowering occurs more than once, the plant regresses back to the juvenile phase before it flowers again. Therefore this is an incorrect option.

Option D: Senescent phase marks the end of the reproductive phase of the plant. Senescent phase signifies that after this phase the plant cannot reproduce.Therefore this is an incorrect option.

Hence, the correct answer is option (A)

Note: The inter flowering period represents the juvenile phase as the plant though reaches maturity before flowering once, but needs to develop and gain maturity again for the next round of flowering.