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Movement of pollen tube is
Movement of pollen tube is
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The correct option is A Chemotropism
Paratonic growth movements are the induced movements of growth, caused by external stimuli, such as gravity, light, water or contact. The movements show a directional relation to the stimulus. The stimuli are effective in causing growth movements only when they are unidirectional. Such movements are generally known as tropic movements and the phenomenon is referred to as tropism. Based on the nature of stimulus, tropisms may be of various types-
(A) Geotropism
(B) Phototropism
(C) Hydrotropism
(D) Chemotropism
(E) Thigmotropism
In flowering plants growth of pollen tube towards embryo sac is an example of chemotropism and occurs in response to chemicals secreted by synergids in embryo sac.
Paratonic growth movements are the induced movements of growth, caused by external stimuli, such as gravity, light, water or contact. The movements show a directional relation to the stimulus. The stimuli are effective in causing growth movements only when they are unidirectional. Such movements are generally known as tropic movements and the phenomenon is referred to as tropism.
Based on the nature of stimulus, tropisms may be of various types-
(A) Geotropism
(B) Phototropism
(C) Hydrotropism
(D) Chemotropism
(E) Thigmotropism
In flowering plants growth of pollen tube towards embryo sac is an example of chemotropism and occurs in response to chemicals secreted by synergids in embryo sac.
(A) Geotropism
(B) Phototropism
(C) Hydrotropism
(D) Chemotropism
(E) Thigmotropism
In flowering plants growth of pollen tube towards embryo sac is an example of chemotropism and occurs in response to chemicals secreted by synergids in embryo sac.
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