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12th Standard Botany - Asexual and Sexual Reproduction in Plants English Medium Free Online Test One Mark Questions 2020 - 2021

12th Standard

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Botany

Time : 00:10:00 Hrs
Total Marks : 10

    Answer all the questions

    10 x 1 = 10
  1. Choose the correct statement from the following

    (a)

    Gametes are involved in asexual reproduction

    (b)

    Bacteria reproduce asexually by budding

    (c)

    Conidia formation is a method of sexual reproduction

    (d)

    Yeast reproduce by budding

  2. Identify the incorrect pair

    (a)

    sporopollenin - exine of pollen grain

    (b)

    tapetum – nutritive tissue for developing microspores

    (c)

    Nucellus – nutritive tissue for developing embryo

    (d)

    obturator – directs the pollen tube into micropyle

  3. Choose the correct statement(s) about tenuinucellate ovule.

    (a)

    Sporogenous cell is hypodermal

    (b)

    Ovules have fairly large nucellus

    (c)

    sporogenous cell is epidermal

    (d)

    ovules have single layer of nucellus tissue

  4. The scar left by funiculus in the seed is _______.

    (a)

    tegmen

    (b)

    radicle

    (c)

    epicotyl

    (d)

    hilum

  5. The unit of reproductive structure used in vegetative propagation is called as __________________

    (a)

    Diplospores

    (b)

    Aplanospores

    (c)

    Diaspores

    (d)

    Conidiospores

  6. Cleavage polyembryony is noticed in _________________

    (a)

    Orchids

    (b)

    Casuarina

    (c)

    Balanophora

    (d)

    Syzygium

  7. Which of the following plant was introduced as a contaminant into India along with wheat?

    (a)

    Parthenium hysterophorus

    (b)

    Zea mays

    (c)

    Rosa indica

    (d)

    Mangifera indica

  8. Assertion (A): Entomophily is the most common type of pollination.
    Reason (R): Birds and animals bring out effective pollination.

    (a)

    Both A and R are incorrect.

    (b)

    A is correct R is incorrect.

    (c)

    R explains A.

    (d)

    Both A and R are correct. R is not a correct explanation for A.

  9. Identify the mismatched pair:
    (i) Sucker - Chrysanthemum
    (ii) Bulbils - Agave
    (iii) Stolon - Fragaria
    (iv) Runner - Lilium

    (a)

    i only

    (b)

    ii only

    (c)

    iii only

    (d)

    iv only

  10. Assertion (A): Anemophilous pollination occurs by animals.
    Reason (R): Pollen grains are sticky for easy attachment on animals.

    (a)

    A is correct R is incorrect

    (b)

    R explains A.

    (c)

    Both A and R are incorrect.

    (d)

    Both A and Rare correct.R does not explain A.

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