Phloem Transport: Flow from Source to Sink

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Phloem Transport: Flow from Source to Sink: Overview

This topic covers concepts such as Phloem Sap, Pressure Flow Hypothesis, Bidirectional Flow, and Girdling Experiment.

Important Questions on Phloem Transport: Flow from Source to Sink

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Which one of the following is a protein deficiency disease?

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According to the pressure flow hypothesis, loading of the phloem sets up a

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In a girdled plant, the position of the bark above the ring on the stem becomes swollen because of

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Which phenomenon causes the movement of water from the adjacent xylem into the phloem?

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A few drops of sap were collected by cutting across a plant stem by a suitable method. The sap was tested chemically. Which one of the following test results indicates that it is phloem sap?

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Removal of a ring of bark from the trunk of a tree eventually kills it because

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Ringing or girdling experiment was first performed by

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The translocation in phloem is explained by the

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The form of sugar transported through phloem is

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Ringing/girdling experiments demonstrate:

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Read the given statements and select the correct option.
Statement 1 : Xylem transport is unidirectional.
Statement 2 : Phloem transport is bi-directional.

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Phloem helps in translocation of

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Munch hypothesis is based on:

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Identify the process taking place in this experiment.

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Assertion : The movement of photosynthates is unidirectional.

Reason : Movement of photosynthates occurs with the water.

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“Cytoplasmic streaming hypothesis” is concerned with

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Aphid stylate sap analysis can be used to know