Which one is incorrect  statement

(A)subsidiary cells are specialised epidermal cells

(B)cuticle is always present on epidermal tissue system

(C)cuticle is absent in roots

(D)Guard cells surround the stoma

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Which of the following is true for  trichomes

(A)usually multicellular

(B)may be branched or unbranched

(C)prevent transpirational water loss

(D)All of the above

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The epidermal hairs of root are usually   _________while of shoots are usually________

(A)unicellular, multicellular

(B)multicellular, unicellular

(C)multicellular, multicellular

(D)unicellular, unicellular

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In grasses, ____________cells are dumb-bell shaped

(A)subsidiary cells

(B)guard cells

(C)Both A and B

(D)stomatal apparatus

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Stomatal apparatus comprises of

(A)stomatal aperture, guard cells

(B)stomatal aperture, guard and subsidiary cells

(C)stomatal aperture and guard, subsidiary and epidermal cells

(D)stomatal aperture and subsidiary cells

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Stomata is a part of which type of tissue system

(A)Epidermal tissue system

(B)Ground tissue system

(C)Vascular tissue system

(D)Both A and B

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Which one is true regarding epidermis?

(A)usually single layered

(B)made up of parenchymatous cells

(C)outermost layer of the primary plant body

(D)All of the above

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Epidermal tissue system consists of

(A)epidermal cells

(B)stomata

(C)trichomes, root hairs

(D)All of the above

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Find the incorrect statement

(A)The presence of vessels is the characteristic feature of angiosperms

(B)sieve tubes are present in gymnosperms

(C)The radial conduction of water takes place by the ray parenchymatous cells.

(D)Xylem fibres have highly thickened walls and obliterated central lumens

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Metaphloem contains _________sieve tubes while protophloem contains____________ sieve tubes.

(A)bigger, narrow

(B)narrow, bigger

(C)narrow, no

(D)no, bigger

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