What plant organ is responsible for the majority of photosynthesis? A) root
B)stem
C) leaf
D) flower

C.) Leaf

Explanation:  Leaves are the main sites for photosynthesis which is the process by which plants that synthesize food. Most leaves are usually green, due to the presence of chlorophyll in the leaf cells.

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d.

explanation:

answer; i believe that the correct answer is ; males are hemizygous for the x chromosome;