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NEET Botany MCQs: Class-XI and Class-XII



NEET Botany MCQs: Class-XI and Class-XII

Match Column - I with Column - II.

Column-I Column-II
(A)Saprophyte (I)Symbiotic association of fungi with plant roots
(B)Parasite (II)Decomposition of dead organic materials
(C)Lichens (III)Living on living plants or animals
(D)Mycorrhiza (IV)Symbiotic association of algae and fungi
Choose the correct answer from the options given below:

[class-xii ]

  • (A)-(I), (B)-(II), (C)-(III), (D)-(IV)
  • (A)-(III), (B)-(II), (C)-(I), (D)-(IV)
  • (A)-(II), (B)-(I), (C)-(III), (D)-(IV)
  • (A)-(II), (B)-(III), (C)-(IV), (D)-(I)
    • Correct Option: D  [ (A)-(II), (B)-(III), (C)-(IV), (D)-(I) ]

    Remark:

Which of the following ecological pyramids is generally inverted?

[class-xii ]

  • Pyramid of biomass in a sea
  • Pyramid of biomass in a forest
  • Pyramid of energy
  • Pyramid of numbers in grassland
    • Correct Option: A  [ Pyramid of biomass in a sea ]

    Remark:

Which of the following is the most important causes for animals and plants being driven to extinction?

[class-xii ]

  • Alien species invasion
  • Economic exploitation
  • Drought and floods
  • Habitat loss and fragmentation
    • Correct Option: D  [ Habitat loss and fragmentation ]

    Remark:

Which one of the following is not a method of in situ conservation of biodiversity?

[class-xii ]

  • Biosphere Reserve
  • Botanical Garden
  • Wildlife Sanctuary
  • Sacred Grove
    • Correct Option: B  [ Botanical Garden ]

    Remark:

Which of the following in true for Golden rice?

[class-xii ]

  • It has yellow grains, because of a gene introduced from a primitive variety of rice
  • It is drought tolerant, developed using Agrobacterium vector
  • It is pest resistant, with a gene from Bacillus thuringiensis
  • It is Vitamin A enriched, with a gene from daffodil
    • Correct Option: D  [ It is Vitamin A enriched, with a gene from daffodil ]

    Remark:

Which of the following statements is not correct?

[class-xi ]

  • Lysosomes have numerous hydrolytic enzymes.
  • The hydrolytic enzymes of lysosomes are active under acidic pH.
  • Lysosomes are membrane bound structures.
  • Lysosomes are formed by the process of packaging in the endoplasmic reticulum.
    • Correct Option: D  [ Lysosomes are formed by the process of packaging in the endoplasmic reticulum. ]

    Remark:

From evolutionary point of view, retention of the female gametophyte with developing young embryo on the parent sporophyte for some time, is first observed in:

[class-xii ]

  • Liverworts
  • Pteridophytes
  • Mosses
  • Gymnosperms
    • Correct Option: B  [ Pteridophytes ]

    Remark:

Conversion of glucose to glucose-6-phosphate, the first irreversible reaction of glycolysis, is catalyzed by:

[class-xi ]

  • Hexokinase
  • Aldolase
  • Enolase
  • Phosphofructokinase
    • Correct Option: A  [ Hexokinase ]

    Remark:

Phloem in gymnosperms lacks:

[class-xi ]

  • Both sieve tubes and companion cells
  • Companion cells only
  • Sieve tubes only
  • Albuminous cells and sieve cells
    • Correct Option: A  [ ]

    Remark:

Inhibition of Succinic dehydrogenase enzyme by malonate is a classical example of:

[class-xi ]

  • Enzyme activation
  • Competitive inhibition
  • Cofactor inhibition
  • Feedback inhibition
    • Correct Option: B  [ Competitive inhibition ]

    Remark:
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