Biology MCQs

Page No. 16

Diatoms are found in__________?


aPhytoplanktonic population


bFreshwater lakes and ponds


cMarine environment


dAll of the above


View Answer All of the above

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


aPinnularia, Navicula, Cymbella, Melosira


bEuglenamorpha, Hedneria , Heteronema, Colacium


cNostoc, Anabaena, Aulosira, Cylindrospermum


dCochlodinium, Gymnodinium, Lenodinium, Peridinium



Diatoms belong to___________?


aChrysophyta


bBacillariophyceae


cXanthophyceae


dBoth A. and B.


View Answer Both A. and B.

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


aDiatoms


bRadiolarians


cDinoflagellates


dForaminiferans


View Answer Diatoms

The wax present on the body of cockroach is secreted:


aMucocytes


bLeucocytes


cOenocytes


dGranulocytes


View Answer Oenocytes

The bristles on the body of the cockroach arise from__________?


aEpidermis


bTrichogen cell


cBasement membrane


dMalpighian cell


View Answer Trichogen cell

Melanin pigment in cockroach is found in__________?


aEpicuticle


bExocuticle


cEndocuticle


dAll of these


View Answer Exocuticle

Chitin in cockroach is absent in____________?


aEpicuticle


bExocuticle


cEndocuticle


dAll of these


View Answer Epicuticle

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


aAscaris


bBacteria


cRing worm


dSuinea worm


View Answer Suinea worm

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


aEndodermis


bMesophyll


cChitin


dEpidermis


View Answer Epidermis

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