NCERT Solutions for Chapter: Plant Growth and Development, Exercise 3: SHORT ANSWER TYPE QUESTIONS

Auxins are growth hormones capable of promoting cell elongation. They have been used in horticulture to promote growth, flowering and rooting. Explain the meaning of the following term related to auxins.

Auxin precursors

Auxins are growth hormones capable of promoting cell elongation. They have been used in horticulture to promote growth, flowering and rooting. Explain the meaning of the following term related to auxins.

Anti-auxins

Auxins are growth hormones capable of promoting cell elongation. They have been used in horticulture to promote growth, flowering and rooting. Explain the meaning of the following term related to auxins.

Synthetic auxins

On germination a seed first produces shoots with leaves, flowers appear later.

How is this advantageous to the plant?

Choose the correct answer from the box given:

(Exponential, Lag, Stationary)

Maximum growth is observed in _____ phase.

Name the hormone that promotes apical dominance.

Fill in the blank with the correct option from the bracket.

_____ hormone initiate rooting in stem cuttings. (Gibberellin, Ethylene, Auxin, ABA)

Name the pigment involved in Photo-perception in flowering plants.