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Question
Which of the following one consists of living cells?
Which of the following one consists of living cells?
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Solution
The correct option is B Companion cells
The companion cells are intimately associated with phloem sieve elements, which make up the actual transport vessel (sieve tube) through which mass flow of assimilates occurs. Sieve elements are usually enucleate, although they are living cells, and are thus completely dependent upon the associated companion cells leading to the concept of the sieve element–companion cell complex.So, the correct answer is 'Companion cells.'
The companion cells are intimately associated with phloem sieve elements, which make up the actual transport vessel (sieve tube) through which mass flow of assimilates occurs. Sieve elements are usually enucleate, although they are living cells, and are thus completely dependent upon the associated companion cells leading to the concept of the sieve element–companion cell complex.
So, the correct answer is 'Companion cells.'
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