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Question

Statement 1: The translocation of food is always from source to sink.
Statement 2: Translocation in phloem is bidirectional.


A
Statement 1 and Statement 2 are correct 
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B
Statement 1 and Statement 2 are wrong 
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C
Statement 1 is correct and Statement 2 is wrong
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D
Statement 1 is wrong and Statement 2 is correct
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Solution

The correct option is D Statement 1 is wrong and Statement 2 is correct
The food i.e. glucose, synthesized during photosynthesis is transported from the leaf to different parts of the plants by phloem. This transportation of food in plants is called translocation. The sugar is generally translocated from source (leaf) to sink (storage organs). However during the spring season, the food (sugar) stored in the sink is mobilised towards the buds of the plant.
Thus the translocation by phloem is bidirectional. Hence, the statement 1 is wrong since the translocation does not always occur from source to sink. 

Biology

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