Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

21.

Electrons used in electron microscope are of the wavelength

  • 0.05 Å

  • 0.15 Å

  • 0.25 Å

  • 0.30 Å


22.

Example of water soluble plant pigment is

  • chlorophyll- a

  • chlorophyll- b

  • anthocyanin

  • xanthophyll


23.

Inulin is a polymer of

  • glucose

  • galactose

  • fructose

  • arabinose


24.

Mannitol is

  • amino acid

  • amino alcohol

  • sugar alcohol

  • sugar acid


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25.

A flower which can be divided into two equal halves by only one plane is

  • zygomorphic

  • actinomorphic

  • regular

  • perfect


26.

VAM is

  • symbiotic bacteria

  • saprophytic bacteria

  • saprophytic fungi

  • symbiotic fungi


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27.

A plant cell becomes turgid due to

  • plasmolysis

  • exosmosis

  • endosmosis

  • electrolysis


C.

endosmosis

Osmosis is the diffusion of water molecules through a differentially permeable membrane. Endosmosis leads to diffusion of water into the cell and thus, cell becomes turgid.  

Plasmolysis is the shrinking of protoplasm away from the cell wall of a plant or bacterium due to water loss from osmosis.


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28.

Spindle fibre is made up of

  • humulin

  • intermediate filament

  • flagellin

  • tubulin


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29.

Edible part of mushroom is

  • basidiocarp

  • primary mycelium

  • fungal hyphae

  • basidiospores


30.

Calcium level decreases in the blood due to hyposecretion of

  • parathyroid hormone

  • calcitonin

  • thyroxine

  • adrenaline


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