The elements of xylem which does food storage is
(1)tracheids
(2)vessels
(3)xylem parenchyma
(4) xylem fibres
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn angiosperms, the main water transporting elements are
(1)tracheids
(2)vessels
(3)Both A and B
(4)tracheids, vessels, xylem fibres, xylem parenchyma
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe first formed primary xylem elements are__________and later formed is _____________
(1)protoxylem , metaxylem
(2)metaxylem , protoxylem
(3)tracheids, vessels
(4)Both B and C
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe type of primary xylem when protoxylem lies towards the pith is known as
1. endarch
2. exarch
3. endoexarch
4. Both (1) and (3)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA mature sieve tube elements have
(1)large vacuole
(2)peripheral cytoplasm
(3)lack nucleus
(4)All of the above
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPressure gradient in the sieve tubes is maintained by
(1)companion cells
(2)phloem fibres
(3)phloem parenchyma
(4)All of these
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following is true for phloem parenchyma?
(1)made up of elongated, tapering cylindrical cells
(2)have dense cytoplasm and nucleus
(3)stores food material and resins, latex and mucilage
(4)All of the above
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich element of the phloem becomes dead at maturity
(1)sieve tube elements
(2)companion cells
(3)phloem parenchyma
(4)phloem fibres
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMetaphloem contains _________sieve tubes while protophloem contains____________ sieve tubes.
(1)bigger, narrow
(2)narrow, bigger
(3)narrow, no
(4)no, bigger
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyEpidermal tissue system consists of
(1)epidermal cells
(2)stomata
(3)trichomes, root hairs
(4)All of the above
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology