Fill in the places with appropriate word/ words.
(a)A phase of growth which is maximum and fastest is ……….
(b)Apical domince as expressed in dictyledonous plants is due to the presence of more……. In the apical buyd than in the lateral ones
(c )In additon to lauxin a……. Must be supplied to culture medium to obtain a good callus in plant tissue culture
(d)…………of a vegetative plants are the sites of photperiodic perception.

Explanation

(a) A phse of growth which is maximum and fastest is exponential phase
(b) Apical dominane as expressed in didoctyledonous 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 suppleied to culture .
(d) Leaves of vegetative plants are the sites of photoperiodic perception