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NEET Botany MCQs: Class-XI and Class-XII



NEET Botany MCQs: Class-XI and Class-XII

Which of the following are not secondary metabolites in plants?

[class-xi ]

  • Morphine, codeine
  • Amino acids, glucose
  • Vinblastin, curcumin
  • Rubber, gums
    • Correct Option: B  [ Amino acids, glucose ]

    Remark:

Which of the following stages of meiosis involves division of centromere?

[class-xi ]

  • Metaphase I
  • Metaphase II
  • Anaphase II
  • Telophase II
    • Correct Option: C  [ Anaphase II ]

    Remark:

Match List-I with List-II.

List-I List-II
(A)Cohesion (I)More attraction in liquid phase
(B)Adhesion (II)Mutual attraction among water molecules
(C)Surface tension (III)Water loss in liquid phase
(D)Guttation (IV)Attraction towards polar surfaces
Choose the correct answer from the options given below:

[class-xi ]

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

    Remark:

The first stable product of CO2 fixation in sorghum is:

[class-xi ]

  • Pyruvic acid
  • Oxaloacetic acid
  • Succinic acid
  • Phosphoglyceric acid
    • Correct Option: B  [ Oxaloacetic acid ]

    Remark:

The site of perception of light in plants during photoperiodism is:

[class-xi ]

  • Shoot apex
  • Stem
  • Axillary bud
  • Leaf
    • Correct Option: D  [ Leaf ]

    Remark:

The plant hormone used to destroy weeds in a field is:

[class-xi ]

  • IAA
  • NAA
  • 2,4-D
  • IBA
    • Correct Option: C  [ 2,4-D ]

    Remark:

Plants follow different pathways in response to environment or phases of life to form different kinds of structures. This ability is called:

[class-xi ]

  • Elasticity
  • Flexibility
  • Plasticity
  • Maturity
    • Correct Option: C  [ Plasticity ]

    Remark:

Which of the following plants is monoecious?

[class-xii ]

  • Carica papaya
  • Chara
  • Marchantia polymorpha
  • Cycas circinalis
    • Correct Option: B  [ Chara ]

    Remark:

A typical angiosperm embryo sac at maturity is:

[class-xii ]

  • 8-nucleate and 7-celled
  • 7-nucleate and 8-celled
  • 7-nucleate and 7-celled
  • 8-nucleate and 8-celled
    • Correct Option: A  [ 8-nucleate and 7-celled ]

    Remark:

The term used for transfer of pollen grains from anthers of one plant to stigma of a different plant which, during pollination, brings genetically different types of pollen grains to stigma, is :

[class-xii ]

  • Xenogamy
  • Geitonogamy
  • Chasmogamy
  • Cleistogamy
    • Correct Option: A  [ Xenogamy ]

    Remark:
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