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Phloem in gymnosperm is composed of
(a)Sieve tube elements, companion cells, phloem parenchyma, and phloem fibres.
(b)Sieve cells, albuminous cells, phloem parenchyma, and phloem fibres.
(c)Sieve tube elements, albuminous cells, phloem parenchyma, and phloem fibres.
(d)Sieve cells, companion cells, phloem parenchyma, and phloem fibres.

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Important Questions on Anatomy of Flowering Plants
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Which of the following tissues is not found in monocotyledons?

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The mature sieve tube element lacks a nucleus. So its function is controlled by the nucleus of the

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Find the mismatched pair.

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Identify the figure and select the incorrect statement.

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Identify A, B, and C in the following figure of phloem tissue.

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Tracheid, vessel and sclereids are similar in that they all

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Match Column I and Column II.
Column I | Column II | ||
a | Tracheid | p | Perforations in end |
b | Vessels | q | Phloem fibers |
c | Sieve tube | r | Tapering end |
d | Bast fibres | s | Callose |

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Select the correct statement with respect to phloem fibres.
(a) Generally absent in primary phloem.
(b) Much elongated unbranched with needle-like apices.
(c) Sclerenchymatous in nature.
(d) Becomes dead at maturity.
