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

41.

Male cone of Pinus possesses :

  • mega sporophylls

  • microsporophylls

  • anthers

  • ligules


42.

C4 plants, synthesis of sugars/final CO2 fixation occurs in:

  • palisade cells

  • spongy cells

  • undifferentiated mesophyll cells

  • bundle sheath cells


43.

Cook cambium and vascular cambium are :

  • parts of secondary xylem and phloem

  • parts of pericycle

  • lateral meristems

  • apical meristems


44.

First natural cytokinin was discovered by :

  • Skoog and Miller

  • Letham

  • Benson and Calvin

  • Thimann and Went


Advertisement
45.

Major role of minor elements inside living organisms is to act as :

  • binder of cell structure

  • constituent of hormone

  • building blocks of important amino acids

  • cofactor of enzymes


Advertisement

46.

Epipetalous and syngenesious stamens occur in

  • Solanaceae

  • Brassicaceae

  • Fabaceae

  • Asteraceae


D.

Asteraceae

Epipetalous (stamen borne on the petal) and syngenesious (anthers united laterally into a tube) stamens are found in family Asteraceas.


Advertisement
47.

Which of the following is not vestigial in man ?

  • Tail vertebrae

  • Nails

  • Nictitating membrane

  • Vermiform appendix


48.

The chemical used in National Malaria Eradication Programme is :

  • 2,4- D

  • BHC

  • DDT

  • Pyrethroid


Advertisement
49.

A eukaryotic gene contains two kinds of base sequences. Which of these plays an important role in protein synthesis?

  • Introns

  • Exons

  • Both 'a' and 'b'

  • None of the above


50.

The number of hydrogen bonds between adenine and thymine in a DNA molecule is :

  • two

  • three

  • four

  • eight


Advertisement