Answer: B. The endoplasmic reticulum
Explanation: GOOGLE
Answer:
Water is taken up through the xylem until it reaches a leaf, where it diffuses out into the surrounding mesophyll cells. Water diffuses from the mesophyll cells to the surrounding intercellular air spaces as water vapour, and finally, out of the leaf through the stomata.
Explanation:
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The gradual evolution for the family Equidae (horse family) has been well documented within the fossil record.