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NEET Botany MCQs: Class-XI and Class-XII



NEET Botany MCQs: Class-XI and Class-XII

Phycoerythrin is the major pigment in:

[class-xi ]

  • Red algae
  • Blue green algae
  • Green algae
  • Brown algae
    • Correct Option: A  [ Red algae ]

    Remark:

Which of the following statements is incorrect about gymnosperms?

[class-xi ]

  • They are heterosporous
  • Male and female gametophytes are free living
  • Most of them have narrow leaves with thick cuticle
  • Their seeds are not covered
    • Correct Option: B  [ Male and female gametophytes are free living ]

    Remark:

Male and female gametophytes do not have an independent free living existence in:

[class-xi ]

  • Pteridophytes
  • Algae
  • Angiosperms
  • Bryophytes
    • Correct Option: C  [ Angiosperms ]

    Remark:

Which of the following pairs is of unicellular algae?

[class-xi ]

  • Laminaria and Sargassum
  • Gelidium and Gracilaria
  • Anabaena and Volvox
  • Chlorella and Spirulina
    • Correct Option: D  [ Chlorella and Spirulina ]

    Remark:

Identify the incorrect statement.

[class-xi ]

  • Heart wood does not conduct water but gives mechanical support.
  • Sapwood is involved in conduction of water and minerals from root to leaf.
  • Sapwood is the innermost secondary xylem and is lighter in colour.
  • Due to deposition of tannins, resins, oils etc., heart wood is dark in colour.
    • Correct Option: C  [ Sapwood is the innermost secondary xylem and is lighter in colour. ]

    Remark:

The roots that originate from the base of the stem are:

[class-xi ]

  • Fibrous roots
  • Primary roots
  • Prop roots
  • Lateral roots
    • Correct Option: A  [ Fibrous roots ]

    Remark:

Ray florets have:

[class-xi ]

  • Inferior ovary
  • Superior ovary
  • Hypogynous ovary
  • Half inferior ovary
    • Correct Option: A  [ Inferior ovary ]

    Remark:

The ovary is half inferior in:

[class-xi ]

  • Brinjal
  • Mustard
  • Sunflower
  • Plum
    • Correct Option: D  [ Plum ]

    Remark:

The body of the ovule is fused within the funicle at:

[class-xi ]

  • Hilum
  • Micropyle
  • Nucellus
  • Chalaza
    • Correct Option: A  [ Hilum ]

    Remark:

Large, empty colourless cells of the adaxial epidermis along the veins of grass leaves are:

[class-xi ]

  • Lenticels
  • Guard cells
  • Bundle sheath cells
  • Bulliform cells
    • Correct Option: D  [ Bulliform cells ]

    Remark:
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