Passage cells are found in from Biology Anatomy of Flowering Pla

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 Multiple Choice QuestionsMultiple Choice Questions

121.

Cook cambium and vascular cambium are :

  • parts of secondary xylem and phloem

  • parts of pericycle

  • lateral meristems

  • apical meristems


122.

Phytotron is :

  • a controlled condition chamber for tissue

  • leaf culture process

  • special culture of plants

  • root culture process


123.

P-proteins belong to :

  • xylem parenchyma

  • trichomes

  • sieve tube elements

  • tracheids and vessels


124.

Largest number of chloroplast is found in :

  • palisade tissue

  • spongy tissue

  • transfusion tissue

  • bundle sheath cells


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125.

Growth rings are formed due to activity of :

  • extrastelar cambium

  • intrastelar cambium

  • interstelar cambium

  • both 'b' and 'c'


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126.

Passage cells are found in

  • dicot stem

  • monocot root

  • monocot stem

  • all of these


B.

monocot root

Passage cells are the unthickened cells in the endodermis of a root, found opposite to the protoxylem element through which solutions can diffusein the transverse direction. These are found in monocot root.


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127.

Porous wood has abundance of 

  • vessels

  • fibres only

  • tracheids

  • sieve tubes


128.

Velamen is a specialized tissue found in

  • aerial roots of orchids

  • succulent leaves

  • pneumatophores

  • stilt roots


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129.

Assertion : Monocot stem bears collateral open vascular bundles.

Reason : If cambium is absent such vascular bundles are called closed type.

  • If both Assertion and Reason are true and Reason is the correct explantion of Assertion

  • If both Assertion and Reason are true and Reason is not the correct explanation of Assertion

  • If Assertion is true but Reason is false

  • If Assertion is false but Reason is true.


130.

Which of the following characters are not applicable to the anatomy of dicot stem and choose the correct options given below.

(A) Collenchymatous hypodermis

(B) Polyarch xylem

(C) Presence of casparian strips on the endodermis

(D) Open vascular bundle

(E) Presence of medullary rays

  • (A), (D) and (E) only

  • (B) and (C) only

  • (B) and (E) only

  • (A), (B) and (C) only

  • (A), (B) and (C) only


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