PLANTS
TRANSPORT IN PLANTS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Phloem is the tissue responsible for the translocation of food
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Transport via phloem essentially takes place in one direction
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The direction of food transport is downwards
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All the above
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Detailed explanation-1: -The girdling experiment demonstrates the importance of the phloem tissues. Phloem tissues help in conduction of food (glucose). When a stem is girdled(phloem is removed) the movement of food materials get blocked, and the trunk portion starts swelling due to the accumulation of food materials.
Detailed explanation-2: -but after photosynthesis, food is not transported to other parts below the girdle since the phloem part is removed. So it is observed that there is an accumulation of the food/sugar just above the girdle region. This experiment shows that the phloem tissue aids food transport.
Detailed explanation-3: -The ringing/girdling experiment demonstrates that Phloem is responsible for the translocation of food as well as no effect on water transport shows that xylem is responsible for the ascent of sap. The experiment was conducted by Malpighi.
Detailed explanation-4: -The experiment which shows that food is transported through the phloem is Girdling experiment.