Biology MCQs

Page No. 27

Commonly in other plants than tall ones the speed of upward movement of water is____________?


a8mh-1


b1 mh-1


c7 mh-1


d4 mh-1


View Answer 1 mh-1

___________ component of cell wall has grreat affinity with water?


aLignin


bCellulose


cPectin


dAll of these


View Answer All of these

___________ potential is the measure of the change in water potential of a system due to the presence of solute molecules?


aOsmotic


bPressure


cBoth of these


dNone of these


View Answer Osmotic

The movement of water molecules from a region of higher water potential to a region of lower water potential (through membrane)


aDeffusion


bOsmosis


cActive transport


dNone of these


View Answer Osmosis

The pressure generated when water enters & inflates plant cells is called ___________ potential?


aWater


bOsmotic


cPressure


dSolute


View Answer Pressure

In plants, water potential is determined by major factors?


aThree


bFour


cTwo


dFive


View Answer Two

Cytoplasmic strands that extend through pores in adjacent cell walls are known as___________?


aPseudopods


bSymplasts


cPlasmodesmata


dPili


View Answer Plasmodesmata

In the root cells _______ pathway becomes discontinuous in the endodermis due to the presence of casparian strip.


aTonoplast


bApoplast


cSymplast


dVacuolar


View Answer Apoplast

In plants, the neighbouring cells are connected with one another by__________?


aPlasmodesmata


bCell walls


cVacuoles


dBoth ‘A’ & ‘B’



Active transport is dependent on____________?


aPhotosynthesis


bRespiration


cPhotophosporylation


dNone of these


View Answer Respiration

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