The dead element present in the phloem is
(a) companion cells
(b) phloem fibres
(c) phloem parenchyma
(d) sieve tubes
1 Answers
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Name the regions in which parenchyma tissue is present.
Parenchyma is a simple permanent tissue of angiospermic plants. It is present in cortex and pith of stem and roots. It is also present in mesophyll of leaves. When it...
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Which of the following tissues has dead cells? (a) Parenchyma (b) Sclerenchyma (c) Collenchyma (d) Epithelial tissue
(b) Sclerenchyma
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Which cell does not have perforated cell wall? (a) Tracheids (b) Companion cells (c) Sieve tubes (d) Vessels
(b) Companion cells
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Which of the following does not lose their nucleus at maturity? (a) Companion cells (b) Red blood cells (c) Vessel (d) Sieve tube cells
(a) Companion cells
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Parenchyma cells are (a) relatively unspecified and thin walled (b) thick walled and specialised (c) lignified (c) none of these
(a) relatively unspecified and thin walled
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The water conducting tissue generally present in gymnosperm is (a) vessels (b) sieve tube (c) tracheids (d) xylem fibres
(c) tracheids
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Match the column (A) with the column (B) (a) Parenchyma (i) Thin walled, packing cells
a—i; b—ii c—iv; d—iii; e—v;
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Fill in the blanks: a) Plant fibres are obtained from_________ and ________ . b) Animals fibres are __________ and ___________ .
a) Plant fibres are obtained from jute and cotton. b) Animals fibres are silk and wool
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Geeta took three water samples in test tubes A, B and C. She added soap solution to all the three test tubes.
(D) Both A and B are soft water
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Which of the following is made up of dead cells?
The correct answer is (2) Cork cambium undergoes periclinal division and cuts off thick walled suberised dead cells towards outside i.e. phellem (cork) and it cuts off thin walled living cells...
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