Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

31.

Assertion : Algae and fungi are classified as thallophytes.

Reason : They both are autotrophs.

  • If both assertion and reason are true and reason is the correct explanation of assertion

  • If both assertion and reason are true but reason is not the correct explanation of assertion

  • If assertion is true but reason is false

  • If both assertion and reason are false


32.

Assertion : Conifer trees produce a large quantity of wind borne pollen grains.

Reason : The pollen grains have wings.

  • If both assertion and reason are true and reason is the correct explanation of assertion

  • If both assertion and reason are true but reason is not the correct explanation of assertion

  • If assertion is true but reason is false

  • If both assertion and reason are false


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33.

Assertion : Neurospora is commonly called water mould.

Reason : It belongs to basidomycetes fungi.

  • If both assertion and reason are true and reason is the correct explanation of assertion

  • If both assertion and reason are true but reason is not the correct explanation of assertion

  • If assertion is true but reason is false

  • If both assertion and reason are false


D.

If both assertion and reason are false

Neurospora is commonly called pink /red bread mould or pink mould. It belongs to class Ascomycetes fungi or sac fungi. It is used in experimental genetics as it can be grown easily in a definite medium in laboratory. It is a haploid fungus. It is a heterothallic fungus having positive and negative mycelia and somatic fusion of two halpoid nuclei produce a diploid zygote. The zygote by one meiotic and another mitotic divisions forms 8-nuclei and hence ascospores, a characteristic structure of ascomycetes are produced.


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34.

Assertion : In woody stems, the amount of heart wood continues to increase year after year.

Reason : The cambial activity continues uninterrupted.

  • If both assertion and reason are true and reason is the correct explanation of assertion

  • If both assertion and reason are true but reason is not the correct explanation of assertion

  • If assertion is true but reason is false

  • If both assertion and reason are false


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35.

Assertion : Vernalization is acceleration of subsquent flowering by low temperature treatment.

Reason : Site of vernalization is apical meristem.

  • If both assertion and reason are true and reason is the correct explanation of assertion

  • If both assertion and reason are true but reason is not the correct explanation of assertion

  • If assertion is true but reason is false

  • If both assertion and reason are false


36.

Assertion : Plants absorb sulphur in the form of sulphate ions.

Reason : Sulphur bacteria are required for the formation of sulphate.

  • If both assertion and reason are true and reason is the correct explanation of assertion

  • If both assertion and reason are true but reason is not the correct explanation of assertion

  • If assertion is true but reason is false

  • If both assertion and reason are false


37.

Assertion : Dark reaction is purely enzymatic reaction.

Reason : It occurs only in absence of light.

  • If both assertion and reason are true and reason is the correct explanation of assertion

  • If both assertion and reason are true but reason is not the correct explanation of assertion

  • If assertion is true but reason is false

  • If both assertion and reason are false


38.

Assertion : Petroplants produce large amount of latex.

Reason : The latex contains long chain hydrocarbons.

  • If both assertion and reason are true and reason is the correct explanation of assertion

  • If both assertion and reason are true but reason is not the correct explanation of assertion

  • If assertion is true but reason is false

  • If both assertion and reason are false


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39.

A child took sugar cane and sucked its juice. Regarding this which of the follwoing match is correct?

  • Substrate Enzyme Site of secretion of enzyme Products formed
    Proteins Pepsin Duodenum Polypeptides
  • Starch Amylase Salivary glands Glucose
  • Lipids Lipase Pancreas Fat globules
  • Sucrose Invertase Duodenum Glucose + Fructose

40.

Which of the following is true regarding sperm?

  • Fertilizin : for penetrating egg membrane

  • Hyalurodinase : for penetrating egg membrane

  • Acrosin : dissolves corona radiata

  • Capacitation : takes place in penis


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