1
Question
Mature sieve tube elements are devoid of____________
Mature sieve tube elements are devoid of____________
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Solution
The correct option is A Nucleus
- Sieve tube elements are an integral part of phloem which are placed one on the top of the other and form a channel-like structure that is used for conduction.
- The main function of the sieve tube is transport of carbohydrates, primarily sucrose, in the plant (e.g., from the leaves to the fruits and roots). These lack nucleus at maturity so they are associated with companion cells for support.
So, the correct answer is option A.
- Sieve tube elements are an integral part of phloem which are placed one on the top of the other and form a channel-like structure that is used for conduction.
- The main function of the sieve tube is transport of carbohydrates, primarily sucrose, in the plant (e.g., from the leaves to the fruits and roots). These lack nucleus at maturity so they are associated with companion cells for support.
So, the correct answer is option A.
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