Multiple Choice Questions

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Which one of the following fruits is parthenocarpic?

  • Brinjal

  • Apple

  • Jackfruit

  • Jackfruit


D.

Jackfruit

Parthenocarpy is a process of developing fruits without involving fertilisation/seed formation. Therefore, the seedless varieties of economically important fruits like orange, banana, watermelon, lemon, etc. are produced using this technique. This technique involves inducing fruit formation by the application of plant growth hormones such as auxins. 

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Assisted reproductive technology, IVF involves transfer of 

  • ovum into the Fallopian tube 

  • zygote into the Fallopian tube 

  • zygote into the uterus

  • zygote into the uterus

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Even in absence of pollinating agents seed-setting is assured in 

  • Commellina

  • Zostera

  • Salvia

  • Salvia

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Male gametophyte in angiosperms produces

  • Two sperms and a vegetative cell

  • Single sperm and a vegetative cell

  • Single sperm and a two vegetative cells

  • Single sperm and a two vegetative cells

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An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme is

  • cuticle

  • sporopollenin

  • lignin

  • lignin

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Non -albuminous seed is produced in 

  • maize

  • castor

  • wheat

  • wheat

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Pollen tablets are available in the market for

  • In vitro fertilisation

  • breeding programmes

  • supplementing food 

  • supplementing food 

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Geitonogamy involves

  • Fertilisation of a flower by the pollen from another flower of the same plant

  • Fertilisation of a flower by the pollen from the same flower

  • Fertilisation of a flower by the pollen from a flower of another plant in the same population

  • Fertilisation of a flower by the pollen from a flower of another plant in the same population

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Function of filiform apparatus is to 

  • recognise the suitable pollen at the stigma

  • stimulate the division of generative cell 

  • produce nectar

  • produce nectar

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Both, autogamy and geitonogamy are prevented in

  • papaya

  • cucumber

  • castor

  • castor

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