Biology MCQs

Page No. 51

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


aMitosis

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bMeiosis

✓


cBoth depending upon the conditions

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dNone of these

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View Answer Meiosis

Of the following four options which one is most advanced?


aAnthoceropsida

✓


bBryopsida

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cHepaticopsida

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dNone of these

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View Answer Anthoceropsida

Pinus Taxus and Picea belong to_________________?


aSpheospsida

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bFilicineae

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cGymnosperms

✓


dAngiosperms

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View Answer Gymnosperms

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


aSpheospsida

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bFilicineae

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cGymnosperms

✓


dAngiosperms

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View Answer Gymnosperms

Protonema is___________?


aThallus like

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bAlgae like

✓


cFungus like

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dPlant like

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View Answer Algae like

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


aSporangium

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bInteguments

✓


cOvule

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dPericarp

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View Answer Integuments

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


aIts short thick branched horizontally growing rhizome

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bFibrous adventituous roots arise from the lower side of rhizome

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cShows heteromorphic alternation of generation

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

✓



Antheridiophore and archegoniophore are found in_____________?


aMarchantia

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bFunaria

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cBoth of these

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dNone of these

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View Answer Both of these

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


aThey belong to sphenopsida

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bThey are seedless and their leaves are called fronds

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cThey live in shady and moist areas

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dThey show circinate vernation

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The simplest of all bryophytes are___________?


aThallophytes

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bEmbryophytes

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cMosses

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dLiverworts

✓


View Answer Liverworts

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