HORTICULTURE

HORTICULTURE SCIENCE

PLANT BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following responses is a plant growing toward or leaning toward light?
A
thigmotrophism
B
phototropism
C
gravitropism
D
hydrotropism
Explanation: 

Detailed explanation-1: -Phototropism is a directional response that allows plants to grow towards, or in some cases away from, a source of light.

Detailed explanation-2: -Phototropism, or the differential cell elongation exhibited by a plant organ in response to directional blue light, provides the plant with a means to optimize photosynthetic light capture in the aerial portion and water and nutrient acquisition in the roots.

Detailed explanation-3: -Phototropism is the movement of plant parts in response to light. Thus, the stimulus for phototropism is “Light”.

Detailed explanation-4: -"Even mature plants bend toward the strongest light. They do this by elongating the cells of the stem on the side that is farthest from the light. This type of light-oriented growth is called phototropism, ‘’ explains Prof.

Detailed explanation-5: -Plant Tropisms Growing toward gravity is called geotropism. Plants also exhibit phototropism, or growing toward a light source. This response is controlled by a plant growth hormone called auxin.

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