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NEET Biology · Sexual Reproduction in Flowering Plants · Set 1 (Q1-30)

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  1. 1.
    Proximal end of the filament of stamen is attached to the:
    1. (1)Anther
    2. (2)Connective
    3. (3)Placenta
    4. (4)Thalamus or petal
  2. 2.
    Which of the following statements is not correct?
    1. (1)Pollen grains of many species can germinate on the stigma of a flower, but only one pollen tube of the same species grows into the style
    2. (2)Insects that consume pollen or nectar without bringing about pollination are called pollen nectar robbers
    3. (3)Pollen germination and pollen tube growth are regulated by chemical components of pollen interacting with those of the pistil
    4. (4)Some reptiles have also been reported as pollinators in some plant species
  3. 3.
    Coconut water from a tender coconut is :
    1. (1)Degenerated nucellus
    2. (2)Immature embryo
    3. (3)Free nuclear endosperm
    4. (4)Innermost layers of the seed coat
  4. 4.
    Transfer of pollen grains from the anther to the stigma of another flower of the same plant is called
    1. (1)Xenogamy
    2. (2)Geitonogamy
    3. (3)Karyogamy
    4. (4)Autogamy
  5. 5.
    A typical angiosperm embryo sac at maturity is:
    1. (1)7- nucleate and 8 -celled
    2. (2)7 - nucleate and 7 -celled
    3. (3)8- nucleate and 8 - celled
    4. (4)8-nucleate and 7-celled
  6. 6.
    Which one of the following is resistant to enzyme action?
    1. (1)Pollen exine
    2. (2)Leaf cuticle
    3. (3)Cork
    4. (4)Wood fibre
  7. 7.
    Which of the following can be expected if scientists succeed in introducing apomictic gene into hybrid varieties of crops?
    1. (1)Polyembryony will be seen and each seed will produce many plantlets
    2. (2)Seeds of hybrid plants will show longer dormancy
    3. (3)Farmers can keep on using the seeds produced by the hybrids to raise new crop year after year
    4. (4)There will be segregation of the desired characters only in the progeny
  8. 8.
    Which one of the following may require pollinators, but is genetically similar to autogamy?
    1. (1)Xenogamy
    2. (2)Apogamy
    3. (3)Cleistogamy
    4. (4)Geitonogamy
  9. 9.
    In which one of the following, pollination is autogamous?
    1. (1)Xenogamy
    2. (2)Chasmogamy
    3. (3)Cleistogamy
    4. (4)Geitonogamy
  10. 10.
    Product of asexual reproduction generally generates
    1. (1)Morphologically similar individuals
    2. (2)Genetically similar individuals
    3. (3)Offspring that are exact copies of their parent
    4. (4)All of the above
  11. 11.
    The arrangement of the nuclei in a normal embryosac in the dicot plants is
    1. (1)2 + 4 + 2
    2. (2)3 + 2 + 3
    3. (3)2 + 3 + 3
    4. (4)3 + 3 + 2
  12. 12.
    Male gametophyte in angiosperms produces :
    1. (1)Three sperms
    2. (2)Two sperms and a vegetative cell
    3. (3)Single sperm and a vegetative cell
    4. (4)Single sperm and two vegetative cells
  13. 13.
    In some members of which of the following pairs of families, pollen grains retain their viability for months after release?
    1. (1)Poaceae ; Leguminosae
    2. (2)Poaceae ; Solanaceae
    3. (3)Rosaceae ; Leguminosae
    4. (4)Poaceae ; Rosaceae
  14. 14.
    In angiosperms, microsporogeneis and megasporogenesis:
    1. (1)From gametes without further divisions
    2. (2)Involve meiosis
    3. (3)Occur in ovule
    4. (4)Occur in anther
  15. 15.
    Male gametophyte with least number of cells is present in
    1. (1)Pteris
    2. (2)Funaria
    3. (3)Lilium
    4. (4)Pinus
  16. 16.
    What is the fate of the male gametes discharged in the synergid?
    1. (1)One fuses with the egg, other(s) degenerate(s) in the synergid.
    2. (2)All fuse with the egg.
    3. (3)One fuses with the egg, other(s) fuse(s) with synergid nucleus.
    4. (4)One fuses with the egg and other fuses with central cell nuclei
  17. 17.
    In angiosperm, the haploid, diploid and triploid structures of a fertilized embryo sac sequentially are:
    1. (1)Synergids, antipodals and Polar nuclei
    2. (2)Synergids, Primary endosperm nucleus and zygote
    3. (3)Antipodals, synergids, and primary endosperm nucleus
    4. (4)Synergids, Zygote and Primary endosperm nucleus
  18. 18.
    Male gametophyte with least number of cell is present in :
    1. (1)Pteris
    2. (2)Funaria
    3. (3)Lilium
    4. (4)Pinus
  19. 19.
    In angiosperms, microsporogenesis and megasporogenesis :
    1. (1)occur in ovule
    2. (2)occur in anther
    3. (3)form gametes without further divisions
    4. (4)involve meiosis
  20. 20.
    A dioecious flowering plant prevents both :
    1. (1)Autogamy and geitonogamy
    2. (2)Geitonogamy and xenogamy
    3. (3)Cleistogamy and xenogamy
    4. (4)Autogamy and xenogamy
  21. 21.
    Which of the following is incorrect for wind-pollinated plants?
    1. (1)Many ovules in each ovary
    2. (2)Flowers are small and not brightly coloured
    3. (3)Pollen grains are light and non-sticky
    4. (4)Well exposed stamens and stigma
  22. 22.
    Nucellar polyembryony is reported in the species of
    1. (1)Gossypium
    2. (2)Triticum
    3. (3)Brassica
    4. (4)Citrus
  23. 23.
    Long filamentous threads protruding at the end of a young cob of maize are :
    1. (1)Hairs
    2. (2)Anthers
    3. (3)Styles
    4. (4)Ovaries
  24. 24.
    Which of the following plants are pollinated by water?
    1. (1)Hydrilla
    2. (2)Zostera
    3. (3)Vallisneria
    4. (4)All of the above
  25. 25.
    What would be the number of chromosomes in the cells of the aleurone layer in a plant species with 8 chromosomes in its synergids?
    1. (1)16
    2. (2)24
    3. (3)32
    4. (4)8
  26. 26.
    Plants with ovaries having only one or a few ovules, are generally pollinated by :-
    1. (1)Birds
    2. (2)Wind
    3. (3)Bees
    4. (4)Butterflies
  27. 27.
    In which one of the following, both autogamy and geitonogamy are prevented?
    1. (1)Wheat
    2. (2)Papaya
    3. (3)Castor
    4. (4)Maize
  28. 28.
    Which one of the following plants shows a very close relationship with a species of moth, where none of the two can complete its life cycle without the other?
    1. (1)Hydrilla
    2. (2)Yucca
    3. (3)Banana
    4. (4)Viola
  29. 29.
    Filiform apparatus is characteristic feature of :
    1. (1)Synergids
    2. (2)Generative cell
    3. (3)Nucellar embryo
    4. (4)Aleurone cell
  30. 30.
    What will be the ploidy of endosperm of a seed produced after crossing tetraploid female plant with tetraploid male plant?
    1. (1)Hexaploid
    2. (2)Diploid
    3. (3)Triploid
    4. (4)Pentaploid