HORTICULTURE SCIENCE
PLANT BIOLOGY
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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cytoplasmic streaming
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shared photosynthesis
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opportunistic movement
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photosynthetic competition
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Detailed explanation-1: -Cytoplasmic streaming is the flowing movement of cytoplasm, internal and external to the plant cell, in a rapid orderly fashion. In plant cells, cytoplasmic streaming carries chloroplasts, which are the sites of photosynthesis, from one part of the cell to another.
Detailed explanation-2: -Cyclosis or cytoplasmic streaming is the name given to the movement of chloroplasts within a plant cell.
Detailed explanation-3: -Chloroplasts migrate in response to different light intensities. Under weak light, chloroplasts gather at an illuminated area to maximize light absorption and photosynthesis rates (the accumulation response). In contrast, chloroplasts escape from strong light to avoid photodamage (the avoidance response).
Detailed explanation-4: -Cytoplasmic streaming, known as cyclosis, is a movement of cytoplasm in various organisms including bacteria, higher plants, and animals (Williamson and Ashley, 1982; Theurkauf, 1994).