Multiple Choice Questions

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Synapsis occurs between 

  • a male and female gamete

  • mRNA and ribosomes

  • spindle fibres and centromere

  • spindle fibres and centromere


D.

spindle fibres and centromere

In zygotene of prophase-I, homologous chromosomes pair up. This process is called synapsis. One chromosome of the pair is from the male parent and one from the female parent.

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Cotyledons and testa are edible parts of 

  • groundnut and pomegranate

  • walnut and tamarind

  • french bean and coconut

  • french bean and coconut

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In angiosperms, functional megaspore develops into

  • embryo sac

  • ovule

  • endosperm

  • endosperm

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The gametophyte is not an independent, free-living generation in

  • Adiantum

  • Marchantia

  • Pinus

  • Pinus

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Nucellar polyembryony is reported in species of

  • Gossypium

  • Triticum

  • Brassica

  • Brassica

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Wind pollination is common in 

  • lilies

  • grasses

  • orchids

  • orchids

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Apomictic embryos in Citrus arise from 

  • Synergids

  • maternal sporophytic tissue in ovule

  • antipodal 

  • antipodal 

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In which one of the following pollination is autogamous?

  • Xenogamy

  • Chasmogamy

  • Cleistogamy

  • Cleistogamy

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Transfer of pollen grains from the anther to the stigma of another flower of the same plant is called

  • xenogamy

  • geitonogamy

  • karyogamy

  • karyogamy

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Wind pollinated flowers are

  • small, brightly coloured, producing large number of pollen grains

  • small, producing large number of dry pollen grains

  • large, producing abundant nectar and pollen

  • large, producing abundant nectar and pollen

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