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WorksheetsSexual reproduction in flowering plants- Quiz 6
Total questions: 15
Worksheet time: 6mins
Pollination in water hyacinth and water lily is brought about by the agency of :
birds
bats
water
insects or wind
What is incorrect for pollination by water?
Emergent flowers above the level of water are pollinated by insects or winds
Pollination can take place inside or on water surface
All aquatic plants are pollinated by water
Pollen grains often possess mucilagenous sheath
To form four fully developed polygonum type of embryo sacs in angiosperms total number of meiosis and mitosis divisions generations required are
4, 12
1, 3
4, 4
1, 12
Emasculated flowers have to be covered with a bag of suitable size, generally made up of
Filter paper
Butter paper
Rubber
Latex sheath
In angiosperms how many megaspore mother cells are required to produce 600 functional megaspores?
600
150
2400
200
For the discharge of both male gametes, pollen tube enter into embryosac through the
Central cell
Chalaza
Antipodals
Degenerating cell of synergids
Recent research has shown that pollination requires that carpels recognize pollen grains are “self or non self”. For self incompatibility the system requires :
rejection of non self cells
rejection of self cells
carpel incompatibility with the egg cells
that the flowers be incomplete
Which statement is correct for apomixis:
Without fertilisation diploid embryo forms
With fertilisation diploid embryo forms
Without fertilisation haploid embryo cell form embryo
With fertilisation haploid embryo cell form embryo
Which is the most common type of embryo sac in angiosperms?
Bisporic with two sequential mitotic divisions
Tetrasporic with one mitotic stage of divisions
Monosporic with three sequential mitotic divisions
Monosporic with two sequential mitotic divisions
What type of pollination takes place in Vallisneria?
Male flowers are carried by water currents to female flowers at surface of water.
Pollination occurs in submerged condition by water.
Flowers emerge above surface of water and pollination occurs by insects.
Flowers emerge above water surface and pollen is carried by wind.
In which one of the following, both autogamy and geitonogamy are prevented?
Maize
Wheat
Papaya
Castor
Which one of the following statements regarding post-fertilization development in flowering plants is incorrect?
Ovary develops into fruit
Zygote develops into embryo
Central cell develops into endosperm
Ovules develop into embryo sac
In some plants, the female gamete develops into embryo without fertilization. This phenomenon is known as
Autogamy
Parthenocarpy
Syngamy
Parthenogenesis
What is the fate of the male gametes discharged in the synergid?
One fuses with egg other(s) degenerate (s) in the synergid.
All fuse with the egg.
One fuses with the egg, other(s) fuse(s) with synergid nucleus.
One fuses with the egg and other fuses with central cell nuclei.
The filliform apparatus is a structure in the flowering plants associated with
Fertilization
Pollination
Seed dispersal
Endosperm development
