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 Multiple Choice QuestionsMultiple Choice Questions


Assertion : Many visitors to the hills suffer from skin and respiratory allergy problem.

Reason : Conifer trees produce a large quantity of wind-borne pollen grains.

  • If both Assertion and Reason are true and the reason is the correct explanation of the assertion

  • If both Assertion and Reason are true but the reason is not the correct explanation of the assertion

  • If Assertion is true statement but Reason is false

  • If both Assertion and Reason are false statements



The plant part which consists of two generations, one within the other, is

  • genninated pollen grain

  • embryo

  • unfertilized ovule

  • seed



Seed develops from an ovule (consisting integument and nucellus) or megasporangium. Parts of ovule develop a haploid megaspore which grow into haploid female gametophyte. This female gametophyte develops an egg or oospore. The latter is fertilized by a male gamete and develops into a zygote (2n). The zygote develops into an embryo or new sporophyte. The embryo (2n) is surrounded by the female gametophyte (n), the latter by seed coat (2n). In this way, seed contains three generations locked one within another. Of these, two generations occur within embryo.


Dispersal of fruits in Opium (poppy) occur through shaking by wind by

  • explosive mechanism

  • parachute mechanism

  • censer mechanism

  • jacular mechanism


The formation of gametophyte, from sporophyte, without spore formation or without meiosis is known as :

  • apospory

  • apogamy

  • parthenogenesis

  • none of these


Anemophillous flowers have :

  • sessile stigma

  • small and smooth stigma

  • coloured flower

  • large and feathery stigma


Which of the following is ideal for studying meiosis?

  • Gamete

  • Pollen

  • Microsporangium

  • Root


To which of the following flower 'synandrous' condition is found?

  • Sunflower (Helianthus sp)

  • Gourd (Cucurbita sp)

  • Pea (Pisum sativum)

  • Lemon (Citrus sp)


Study of pollen grain is called

  • Ethmology

  • Palynology

  • Palaeobotany

  • ω-taxonomy


Scientific name of sunflower is

  • Hibiscus rosa-sinensis

  • Solanum nigrum

  • Oryza sativa

  • Helianthus annuus


Ornithophily refers to the pollination by which of the following

  • insects

  • birds

  • snails

  • air