Multiple Choice Questions

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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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Which is present in monocot flowers?

  • Sepals

  • Petals

  • Tepals

  • None of these


Quiescent centre is found in root apex and acts as

  • permanent source of active initiates

  • reservoir of resistant cells

  • reservoir of passive cells to form new root apex if root apex is damaged/ killed

  • all of the above


Which type of meristems allow the fallen stems of cereals/ grasses to become erect?

  • Apical meristem

  • Lateral meristem

  • Intercalary meristem

  • Secondary meristem


An open collateral bundle is one in which :

  • xylem and phloem are seprated by cambium;

  • xylem and phloem lie side by side

  • cambium occurs on the out side of bundle

  • cambium does not occur in the bundle


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Cook cambium and vascular cambium are :

  • parts of secondary xylem and phloem

  • parts of pericycle

  • lateral meristems

  • apical meristems


Phytotron is :

  • a controlled condition chamber for tissue

  • leaf culture process

  • special culture of plants

  • root culture process


P-proteins belong to :

  • xylem parenchyma

  • trichomes

  • sieve tube elements

  • tracheids and vessels


Largest number of chloroplast is found in :

  • palisade tissue

  • spongy tissue

  • transfusion tissue

  • bundle sheath cells


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Growth rings are formed due to activity of :

  • extrastelar cambium

  • intrastelar cambium

  • interstelar cambium

  • both 'b' and 'c'


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