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Translocation

The cells abs...

Question

The cells absent in phloem of gymnosperms are

A

Albuminous cells

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B

Companion cells

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C

Phloem parenchyma

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D

Phloem fibres.

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Solution

The correct option is B Companion cells
Sieve cells are also associated with gymnosperms because they lack the companion cell and sieve member complexes that angiosperms have. Sieve cell associated albuminous cells work between phloem and parenchyma. They connect parenchyma with mature sieve cells to help participate in the transport of cells.
So, the correct answer is 'Companion cells.'

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Q. Assertion :In gymnosperms, plants show well developed vessels and fibres Reason: Companion cells are absent in gymnosperm.

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(a) Xylem transports water and minerals
(b) Gymnosperms lack sieve tubes and companion cells in phloem
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Q. Read the following statements and select the correct ones.
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