Prothallus of fem has : from Biology Plant Kingdom

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 Multiple Choice QuestionsMultiple Choice Questions

161.

A plant having seeds but lacking flowers and fruits belong to

  • pteridophytes

  • mosses

  • ferns

  • gymnosperms


162.

Pigments common to all algae are

  • chlorophyll- a and phycobilins

  • chlorophyll- a and carotenoids

  • chlorophyll- a and chlorophyll- b

  • chlorophyll- b and carotenoids


163.

Pratonema is found in the life cycle of:

  • Spirogyra

  • Rhizopus

  • Escherichia

  • Funaria


164.

Agar-agar commonly used in bacterial cultures and medication is obtained from :

  • Sargassum 

  • Gelidium

  • Ulothrix

  • Ulva


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165.

Prothallus of fem has :

  • antheridia and archegonia on lower surface

  • antheridia and archegonia on upper surface

  • antheridia on upper surface and archegonia on lower

  • antheridia on lower surface and archegonia on upper surface


A.

antheridia and archegonia on lower surface

Prothallus of fern is a gametophyte and is formed from spores. It is attached to soil by unicellular rhizoids developed from posterior part of ventral surface. It consists of sex organs, antheridia in male and archogonia in females.


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166.

Male cone of Pinus possesses :

  • mega sporophylls

  • microsporophylls

  • anthers

  • ligules


167.

Mosses are attached to substratum by :

  • roots

  • capsule

  • rhizoids

  • cistron


168.

A protein rich green alga is :

  • Chlorella

  • Spirulina

  • Spirogyra

  • Ulothrix


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169.

Rarely among angiosperms the pollen grains influenced the endosperm. This is called as :

  • Metaxenia

  • Nemec phenomenon

  • Xenia

  • Mesogamy


170.

A bryophyte which harbours a nitrogen fixing blue-green alga in its thallus is :

  • Pogonatum

  • Riccia

  • Marchantia

  • Anthoceros


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