Which of the following statements about sieve tube elements in phloem is correct?

Practice question

Question

Which of the following statements about sieve tube elements in phloem is correct?

Options

Choose one · Correct answer highlighted

Sieve tube elements have nuclei at maturity. Sieve tube elements are supported by companion cells. Correct Sieve tube elements are responsible for water transport. Sieve tube elements have thick, lignified walls.

Explanation

Sieve tube elements lack nuclei and depend on companion cells for their function in transporting food.

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