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WorksheetsSexual Reproduction in Flowering Plants
Total questions: 20
Worksheet time: 10mins
Which one of the following may require pollinators, but is genetically similar to autogamy?
Geitonogamy
Xenogamy
Apogamy
Cleistogamy
Flowers, which have single ovule in the ovary and are packed into inflorescence are usually pollinated by
water
bee
wind
bat
Functional megaspore in an angiosperm develops into
ovule
endosperm
embryo sac
embryo
A dioecious flowering plant prevents both
autogamy and xenogamy
autogamy and geitonogamy
geitonogamy and xenogamy
cleistogamy and xenogamy
The morphological nature of the edible part of coconut is
perisperm
cotyledon
endosperm
pericarp
Pollination in water hyacinth and water lily is brought about by the agency of
water
insects or wind
birds
bats
Which one of the following statements is not true?
Exine of pollen grains is made up of sporopollenin
Pollen grains of many species cause severe allergies
Stored pollen in liquid nitrogen can be used in the crop breeding programmes
Tapetum helps in the dehiscence of anther
The coconut water from tender coconut represents
fleshy mesocarp
free-nuclear proembryo
free-nuclear endosperm
endocarp
Pollen tablets are available in the market for
In vitro fertilisation
breeding programmes
supplementing food
Exsitu conservation
Function of filiform apparatus is to
recognise the suitable pollen at stigma
stimulate division of generative cell
produce nectar
guide the entry of pollen tube
Non-albuminous seed is produced in
maize
castor
wheat
pea
Even in absence of pollinating agents seed-setting is assured in
Commellina
Zostera
Salvia
fig
Nucellar polyembryony is reported in species of
Gossypium
Triticum
Brassica
Citrus
In which one of the following pollination is autogamous?
Xenogamy
Chasmogamy
Cleistogamy
Geitonogamy
Apomictic embryos in Citrus arise from
synergids
nucellar cells
antipodal cells
diploid egg
Which one of the following pairs of plant strucutre has haploid number of chromosomes?
Megaspore mother cell and antipodal cells
Egg cell and antipodal cells
Nucellus and antipodal cells
Egg nucleus and secondary nucleus
Male gametes in angiosperms are formed by the division of:
microspore
vegetative cell
microspore mother cell
generative cell
Long filamentous threads protruding at the end of a young cob of maize are :
anthers
styles
ovaries
hairs
Even after killing the generative cell with a laser beam, the pollen grain of a flowering plant germinates and produces normal pollen tube because
laser beam stimulates pollen germination and pollen tube growth
the laser beam does not damage the region from which pollen tube emerges
the contents of killed generative cell permits germination and pollen tube growth
the vegetative cell has not been damaged.
Which of the following pairs in angiosperms are diploid and triploid, respectively?
Polar nucleus and secondary nucleus
Microspore mother cell and egg cell
Secondary nucleus and endosperm
Endosperm and antipodal cells
