PLANT PHYSIOLOGY
PLANT MOVEMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Movement of pollen tube towards Chemicals produced by ovary
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Movement of stem towards light
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Movement of roots towards water
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Movement of tendril towards touch
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Detailed explanation-1: -Fertilization of flowers by pollen is achieved because the ovary release chemicals that produce a positive chemotropic response from the developing pollen tube. The growth of pollen tubes towards the ovule is an example of chemotropism.
Detailed explanation-2: -(iii) Growth of polen tube towards ovum is an example of chemotropism. The growth of the pollen tube toward the ovule responses to the chemicals released by the stigma.
Detailed explanation-3: -Thus, the correct answer is ‘Chemotropism’.
Detailed explanation-4: -Chemotropism is induced by the unidirectional stimulus of chemicals, such as the growth of pollen tube towards the ovule.
Detailed explanation-5: -Calcium and boron are the main chemicals responsible for this movement. So, the correct answer is “Option D”.