Hydra is from Biology NEET Year 2012 Free Solved Previous Year P

Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

51.

Gametes formation in animals is found in

  • ovaries

  • gonads

  • gall bladder

  • testes


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52.

Hydra is

  • herbivorous

  • more developed

  • carnivorous

  • omnivorous


A.

herbivorous

Hydra are carnivorous and feed mainly on small crustaceans like water fleas (Daphnia) and small worms.


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53.

Mycoplasma is resistant for

  • penicillin

  • tetracycline

  • streptomycin

  • All of the above


54.

The reduction division in chromosomes takes place in

  • pollen grains

  • tapetum

  • megaspore cell

  • megaspore mother cell


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55.

The RNA found in eukaryotic ribosomes are

  • 5 S and 16 S RNA

  • 5 S, 16 S, 18 S RNA

  • 23S, 16 S, RNA

  • 5 S and 28 S RNA


56.

The biomass pyramid of forest ecosystem is

  • linear

  • inverted

  • tetra angle

  • upright


57.

After pollination the number of chromosome in egg will be

  • n

  • 2n

  • 3n

  • None of these


58.

Double fertilisation is the

  • fertilisation of two eggs in an embryo sac

  • fusion of one male gamete with the egg cell and another male gamete with the secondary nuclei

  • fusion of two male gametes with two polar nuclei

  • fusion of one male gamete with secondary nucleus


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59.

In lysogenic phase which of the following takes place?

  • Phage DNA integrated with host genome and does not multiplied

  • Phage DNA does not integrate with host genome

  • Phage DNA integrates with host genome and bacterial cell does not lyse

  • Phage DNA integrated with host DNA and multiplied


60.

The development ofsporangium in Pteridium is

  • a leptosporangiate type

  • an eusporangiate type

  • Both (a) and (b)

  • None of the above


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