Ethylene causes ‘triple response’ of etiolated seedlings such as in pea . triple response includes
Inhibition of stem elongation
Stimulation of radial swelling of stems
Horizontal growth of stems with respect to gravity (i.e., diageotropism)
All of the above
Triple Response: Ethylene causes ‘triple response’ of etiolated seedlings such as in pea which consists of:
(i) Inhibition of stem elongation,
(ii) Stimulation of radial swelling of stems and
(iii) Horizontal growth of stems with respect to gravity (i.e., diageotropism)