In onion and garlic, the leaves are

(A)cylindrical

(B)bifacial

(C) unifacial

(D) Both A and C

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Dicot leaves are ____________and monocot leaves are _______________.

(A) hypostomatic and amphistomatic

(B) amphistomatic and hypostomatic

(C) Astomatic and amphistomatic

(D) epistomatic and hypostomatic

Concept Questions :-

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Secondary growth is because of

(A)vascular cambium

(B)cork cambium

(C)lateral meristem

(D)All of the above

Concept Questions :-

Secondary Growth in Root
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Secondary growth  is present in

(A)stelar region

(B)extra stelar region

(C)Both A and B

(D)None of these

Concept Questions :-

Secondary Growth in Root
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Interfascicular cambium is formed from

(A)medullary rays

(B)intrafascicular cambium

(C)cork cambium

(D)pericycle

Concept Questions :-

Activity of Vascular Cambium
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Vascular cambium includes

(A)only intrafascicular cambium

(B)only interfascicular cambium

(C)Both intrafascicular and interfascicular cambium

(D)cork cambium

Concept Questions :-

Activity of Vascular Cambium
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The cells which are formed from vascular cambium towards the centre are____________and towards the periphery are _________________

(A)secondary xylem, secondary phloem

(B)bast, wood

(C)wood, bast

(D)Both A and C

Concept Questions :-

Activity of Vascular Cambium
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The secondary xylem is produced more because

(A)cambium is more active towards the inner side

(B)cambium is more active towards the outer side

(C)xylem is more important than phloem

(D)All of the above

Concept Questions :-

Activity of Vascular Cambium
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The primary and secondary phloems get gradually crushed because of

(A) continuous formation and accumulation of  secondary xylem

(B)discontinuous formation and accumulation of secondary xylem

(C)by pressure of secondary xylem as they are continuously formed   

(D)Both A and C    

Concept Questions :-

Activity of Vascular Cambium
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Primary xylem remains less or more intact towards the __________

(A) around the centre

(B) around the periphery

(C)outer to the pith

(D)Both A and C

Concept Questions :-

Activity of Vascular Cambium
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