Biology MCQs

Page No. 51

In life cycle of Pinus megaspores produced by megasporangium divide into 4 megaspores by__________________?


aMitosis


bMeiosis


cBoth depending upon the conditions


dNone of these


View Answer Meiosis

Of the following four options which one is most advanced?


aAnthoceropsida


bBryopsida


cHepaticopsida


dNone of these


View Answer Anthoceropsida

Pinus Taxus and Picea belong to_________________?


aSpheospsida


bFilicineae


cGymnosperms


dAngiosperms


View Answer Gymnosperms

In which group of tracheophytes ovules are born on the exposed surface of megasporophylls______________?


aSpheospsida


bFilicineae


cGymnosperms


dAngiosperms


View Answer Gymnosperms

Protonema is___________?


aThallus like


bAlgae like


cFungus like


dPlant like


View Answer Algae like

Specialized protective coverings around megasporangium which vary in number are called_________________?


aSporangium


bInteguments


cOvule


dPericarp


View Answer Integuments

Due to which property of Adiantum and example of Filicinae is called Maidenhairfern________________?


aIts short thick branched horizontally growing rhizome


bFibrous adventituous roots arise from the lower side of rhizome


cShows heteromorphic alternation of generation


dStipe (stalk) and rachis of leaf have black smooth and shiny hair like structures



Antheridiophore and archegoniophore are found in_____________?


aMarchantia


bFunaria


cBoth of these


dNone of these


View Answer Both of these

Which of the following statement about filicinae a group of tracheophytes is incorrect_________________?


aThey belong to sphenopsida


bThey are seedless and their leaves are called fronds


cThey live in shady and moist areas


dThey show circinate vernation



The simplest of all bryophytes are___________?


aThallophytes


bEmbryophytes


cMosses


dLiverworts


View Answer Liverworts

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