Biology MCQs

Page No. 16

Diatoms are found in__________?


aPhytoplanktonic population

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bFreshwater lakes and ponds

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cMarine environment

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dAll of the above

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View Answer All of the above

Which one of the following is representing the group of diatoms?


aPinnularia, Navicula, Cymbella, Melosira

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bEuglenamorpha, Hedneria , Heteronema, Colacium

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cNostoc, Anabaena, Aulosira, Cylindrospermum

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dCochlodinium, Gymnodinium, Lenodinium, Peridinium

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Diatoms belong to___________?


aChrysophyta

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bBacillariophyceae

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cXanthophyceae

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dBoth A. and B.

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View Answer Both A. and B.

Which organisms are sometimes called the ” pastures of the sea”?


aDiatoms

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bRadiolarians

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cDinoflagellates

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dForaminiferans

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View Answer Diatoms

The wax present on the body of cockroach is secreted:


aMucocytes

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bLeucocytes

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cOenocytes

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dGranulocytes

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View Answer Oenocytes

The bristles on the body of the cockroach arise from__________?


aEpidermis

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bTrichogen cell

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cBasement membrane

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dMalpighian cell

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View Answer Trichogen cell

Melanin pigment in cockroach is found in__________?


aEpicuticle

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bExocuticle

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cEndocuticle

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dAll of these

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View Answer Exocuticle

Chitin in cockroach is absent in____________?


aEpicuticle

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bExocuticle

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cEndocuticle

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dAll of these

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View Answer Epicuticle

In man which organisms cause abscesses on the skin of arms or legs?


aAscaris

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bBacteria

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cRing worm

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dSuinea worm

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View Answer Suinea worm

In all arthropods,the body is covered with a chittinous cuticle which is secreted by the____________?


aEndodermis

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bMesophyll

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cChitin

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dEpidermis

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View Answer Epidermis

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