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Questions and Answers
Which part of the plant body is known as the protoxylem?
Which part of the plant body is known as the protoxylem?
- Roots
- Flowers
- Stems (correct)
- Leaves
What happens to the end walls of a mature vessel cell?
What happens to the end walls of a mature vessel cell?
- They become thicker
- They remain unchanged
- They break down completely (correct)
- They become more flexible
Why does a fully mature xylem cell have no cytoplasm and nucleus?
Why does a fully mature xylem cell have no cytoplasm and nucleus?
- To prevent water loss
- To facilitate programmed cell death (correct)
- To allow for nutrient transport
- To make the cell wall thicker
Which type of cell is found in the xylem of gymnosperms?
Which type of cell is found in the xylem of gymnosperms?
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Which type of cell is found in the phloem of angiosperms?
Which type of cell is found in the phloem of angiosperms?
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Which type of cell is associated with sieve tubes in angiosperms?
Which type of cell is associated with sieve tubes in angiosperms?
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Which type of cell in the phloem lacks a nucleus?
Which type of cell in the phloem lacks a nucleus?
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