Its called osmosis and it only happens with water. now I'm just adding words to be able to post this. its moving down the concentration gradient.
Answer: The female had the genotype XHXh, and produced the two gametes seen at the left side of the diagram. The male had the genotype XHY0, and produced the two gametes seen at the right side of the diagram.
Explanation:
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The stem transports nutrients made in the leaves to all parts in the plant.
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