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 Multiple Choice QuestionsMultiple Choice Questions

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11.

In a ring girdled plant

  • the shoot dies first

  • the root dies first

  • the shoot and root die together

  • the shoot and root die together

1132 Views

12.

Which one gives the most valid and recent explanation for stomatal movements?

  • Transpiration

  • Potassium influx and efflux

  • Starch hydrolysis

  • Starch hydrolysis

535 Views

13.

Which one gives the most valid and recent explanation for stomatal movements?

  • Transpiration

  • Potassium influx and efflux

  • Starch hydrolysis

  • Starch hydrolysis

891 Views

14.

The movement of a gene from one linkage group to another is called

  • inversion

  • duplication

  • translocation

  • translocation

1107 Views

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15.

The function of leghemoglobin in the root nodules of legumes is 

  • oxygen removal 

  • nodule differentiation

  • expression of nif gene

  • expression of nif gene

466 Views

16.

Guttation is the result of 

  • diffusion

  • transpiration

  • osmosis 

  • osmosis 

538 Views

17.

Carrier ions like Na+ facilitate the absorption of substance like

  • amino acids and glucose

  • glucose and fatty acids

  • fatty acids and glycerol

  • fatty acids and glycerol

1190 Views

18.

Guard cell help in

  • protection against grazing

  • transpiration

  • guttation

  • guttation

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19.

The rupture and fractionation do not usually occur in the water column in vessel/tracheids during the ascent of sap because of 

  • lignified thick walls

  • cohesion and adhesion

  • weak gravitational pull

  • weak gravitational pull

454 Views

20.

Passage cells are thin-walled cells found in

  • endodermis of roots facilitating rapid transport of water from cortex to pericycle

  • phloem elements that serve as entry points for substance for transport to other plant parts

  • testa of seeds to enable emergence of growing embryonic axis during seed germination

  • testa of seeds to enable emergence of growing embryonic axis during seed germination

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