When a horizontally positioned plant responds to gravity, then auxins in the lower sides of the stems cause cell elongation that bends the stem upright. The correct option among all the options that are given in the question is the first option. This action is mainly due to the nature of the plants to grow towards sunlight.
Each plant contains a branched system of tubes called xylem, which is responsible for water transport from the roots<span> (where it is taken up) to the leaves (where it is used in </span>photosynthesis<span>).
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Answer:
B
Explanation:
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The cytoskeleton provides structural framework for:Cell shape.
