FORESTRY
PLANT AND WOOD ANATOMY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Phototropism
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Heliotropism
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Geotropism
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Hydrotropism
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Detailed explanation-1: -Positive phototropism is growth towards a light source; negative phototropism is growth away from light.
Detailed explanation-2: -Phototropism is the ability of the plant to re-orient the shoot growth towards a direction of light source. Phototropism is important to plants as it enhances the ability of plants to optimize their photosynthetic capacity.
Detailed explanation-3: -In biology, phototropism is the growth of an organism in response to a light stimulus. Phototropism is most often observed in plants, but can also occur in other organisms such as fungi. The cells on the plant that are farthest from the light contain a hormone called auxin that reacts when phototropism occurs.
Detailed explanation-4: -The growth response to light by plants is via phototroponin, a system of proteins consisting of a light-sensitive protein, called LOV, which switches on reactions for growth.