Plant Growth & Development Questions

IAA is essential in all except

Assertion (A) : During arithmetic growth, there is growth at constant rate. Reason (R) : In arithmetic growth the two only one daughter cell continues to divide while the other differentiates and matures.

How many among the following statements are incorrect ? (a) Plant growth is defined as reversible increase in size or dry weight. (b) Ethylene promotes fruit ripening and leaf senescence. (c) Process by which cell lose their ability to divide and acq

Removal of apical bud results in growth of lateral buds. Which plant hormone suppresses the growth of lateral buds?

Match Column I and II:

You are given a tissue with the potential for differentiation in an artificial culture. Which of the following pairs of hormones would you add to the medium to secure shoots as well as roots ?

The phytohormone that is a carotenoid derivative is;

Given below are two statements; one is labelled as Assertion and the other is labelled Reason. Assertion: In arithmetic growth, mitotic cell division occurs in which, only one daughter cell continues to divide, while other differentiate and matures.

The given kind of growth will observed during:-

Plant growth regulators (PGRs) are:-

Grass stem elongates by the activity of-

The "bakanae" (foolish seedling) disease of rice seedlings is caused by a:

The curly top virus spreads through a plant via the tissue that is;

Two leaves A and B have surface area 50 cm² and 100 cm², respectively. They both increase their surface area by 5 cm² in a day. The absolute growth rate;

Redifferentiation is:

Dedifferentiation refers to:

Differentiation means:

Maximum growth occurs in:

Growth rate curve is:

Phytochrome Pfr is:

Which hormone promotes lateral bud growth?

Apical dominance is due to:

Triple response is due to:

Ethylene is:

Senescence is delayed by:

Which hormone breaks seed dormancy?

Florigen is:

Photoperiodism is mediated by:

Which hormone is known as stress hormone?

Abscisic acid causes:

Bolting is promoted by:

Which is NOT a long day plant?

Vernalization can be reversed by:

Which hormone promotes synthesis of α-amylase in germinating seeds?

Phytochrome exists in:

In photoperiodism, critical day length refers to:

Which hormone is primarily responsible for delaying senescence?

Assertion: Auxin promotes apical dominance Reason: It inhibits growth of lateral buds

Which of the following is NOT correctly matched?