Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

31.

Which of the following tissues consist of living cells?

  • Vessels

  • Tracheids

  • Companion cell

  • Sclerenchyma


32.

Which is a useful product of epidermal origin?

  • Saffron

  • Cotton Fibres

  • Clove

  • Jute


33.

 Fern spores are usually

  • Haploid

  • Diploid

  • Triploid

  • Tetraploid


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34.

Nucleotides are formed by

  • purine, sugar and phosphate

  • purine, pyrimidine and phosphate

  • purine, pyrimidine sugar and phosphate

  • pyrimidine, sugar and phosphate


C.

purine, pyrimidine sugar and phosphate

The nucleotide is formed by the union of a phosphate group with a nucleoside. A nucleoside in fact contains a sugar molecule along with an organic nitrogenous base. Thus, a nucleotide contains an organic nitrogenous base (purine or pyrimidine) along with a sugar molecule and a phosphate group, Nucleoside = Sugars molecule + organic nitrogenous based on Nucleotide = Nucleoside + Phosphate group.


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35.

Which of the following plant cells is not surrounded by a cell wall?

  • Root hair cell

  • Stem hair cell

  • Gamete cell

  • Bacterial cell


36.

Which of the following cell organelles stores hydrolytic enzymes?

  • Centriole

  • Lysosome

  • Chromoplast

  • Chloroplast


37.

A monocarpic plant is one, which

  • has only one carpel

  • Flowers once in a life-time

  • Produces only one seed

  • Produces only one fruit


38.

Calyptra develops from

  • Venter wall of archegonium

  • Outgrowth of gametophyte

  • Neck wall of archegonium

  • Paraphysis of the archegonial branch


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39.

 Protonema is the stage in the life cycle of

  • Cycas

  • Funaria

  • Selaginella

  • Mucor


40.

Which of the following cell organelles is associated with photorespiration?

  • Mitochondria

  • Peroxysome

  • Chloroplast

  • All of these


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