PLANT PHYSIOLOGY
TRANSPORT IN PLANT
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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: -Ringing/Girdling experiments demonstrate that the phloem is responsible for translocation of food because the phloem is present outside the xylem. So, when a ring of bark is removed from a woody plant, the woody xylem part remains intact, which causes the water and the nutrients to reach the leaves.
Detailed explanation-3: -This experiment shows that the phloem tissue aids food transport.
Detailed explanation-4: -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.