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 more ............ in the apical bud than in the lateral ones.
(c) In addition to auxin, 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 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.
Plant Growth Substances (PGS) have innumerable practical applications. Name the PGS you should use to
(a) increase yield of sugarcane
(b) promote lateral shoot growth
(c) cause sprouting of potato tuber
(d) inhibit seed germination
(a) Gibberellic acid increases the yield of sugarcane.
(b) Cytokinin spray on plants promote lateral shoot growth.
(c) The effect of ethylene on potato causes its sprouting.
(d) ABA - Abscissic acid inhibit the seed germination.