Q50 of 231 Page 94

Which of the following terms denotes the movement of the root of a plant towards moisture in the soil?

Hydrotropism is the movement of a plant part in response to water. The water is the stimulus in this process.

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48

Which of the following phytohormone is not associated with the promotion of growth in plants?

 49

The plant hormone which triggers the fall of mature leaves and fruits from the plant body is:

 51

The growth of a pollen tube towards the ovule caused by a sugary substance as stimulus is an example of:

 52

The bending of the shoot of a plant in response to light is called: