Ncert Exercises & Solutions

13. Fill in the places with appropriate word/words.

(a) A phase of growth which is maximum and fastest is ........... .

(b) Apical dominance as expressed in dicotyledonous plants is due to the presence of move........ in the apical bud than in the lateral ones.

(d) ......... of a vegetative plants are the sites of photoperiodic perception.

(a) A phase of growth which is maximum and fastest is exponential phase.

(b) Apical dominance as expressed in dicotyledonous plants is due to the presence of more auxins in the apical bud than in the lateral ones.

(c) In addition to auxin, a cytokinin must be supplied to culture medium to obtain a good callus in plant tissue culture.

(d) Leaves of vegetative plants are the sites of photoperiodic perception.