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


34.

Nucleotides are formed by

  • purine, sugar and phosphate

  • purine, pyrimidine and phosphate

  • purine, pyrimidine sugar and phosphate

  • pyrimidine, sugar and phosphate


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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


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40.

Which of the following cell organelles is associated with photorespiration?

  • Mitochondria

  • Peroxysome

  • Chloroplast

  • All of these


B.

Peroxysome

Photorespiration (C2-cycle) is a special type of respiration shown by many green plants (C3-plants) when they are exposed to light. It is a light-dependent process during, which O2 is used and CO2 is released. The process of photorespiration takes place only in chlorophyllous tissues of plants. Therefore, the main site for photorespiration is chloroplast. But mitochondria and peroxysomes are also required to complete the process.


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