Subject

Biology

Class

NEET Class 12

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.
Advertisement

 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


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


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


Advertisement
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


Advertisement

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


A.

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

Latex of some plants containing long chain hydrocarbons is considered to be a good substitute for liquid fuels or petroleum. Therefore, plants having large amount of latex with long chain hydrocarbons are known as petroplants. Cultivation of petroplants is also a part of energy-cropping.

The most common petroplants belong to families of Euphorbiaceae, Asclepiadaceae, Apocynaceae, Compositae, Labiatae, Sapotaceae, Urticaceae, etc., which have property of converting large amounts of their photosynthates into latex with hydrocarbons. Their hydrocarbon contents can be increased by genetic manipulations (genetic engineering). But commercial production of petroleum or liquid fuel alternative (through petroplants) is in early stage. The use of these petroplants may reduce the pressure on liquid fuel or petroleum.


Advertisement
Advertisement
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


Advertisement