Biology MCQs

Page No. 60

Inner layers of the sponges are made up of__________?


aPinacocytes

✖


bChoanoderm

✖


cChoanoytes

✓


dPinacoderm

✖


View Answer Choanoytes

Sperms are _________ in origin.


aEctodermal

✖


bMesodermal

✓


cEndodermal

✖


dNone of these

✖


View Answer Mesodermal

Gut in pseudocoelomates is made from___________?


aEctoderm

✖


bMesoderm

✖


cEndoderm

✓


dAll of these

✖


View Answer Endoderm

The skeleton of the sponges is in the form of variously shaped needle like structures called___________?


aStripules

✖


bSpicules

✓


cBrails

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dSpines

✖


View Answer Spicules

The internal buds are known as__________?


aSpicules

✖


bChoanocytes

✖


cGemmules

✓


dNone of these

✖


View Answer Gemmules

Venus flower basket is also known as___________?


aSycon

✖


bEuplectella

✓


cLeucoselenia

✖


dSpongilla

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View Answer Euplectella

In acoelomates gut is ________ in origin.


aEctodermal

✖


bEndodermal

✓


cMesodermal

✖


dNone of these

✖


View Answer Endodermal

The system well developed in the acoelomate is___________?


aExcretory system

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bNervous system

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cTransport system

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dAll of these

✓


View Answer All of these

The fate of each blastomere is foretold. The cleavage will be as____________?


aSpiral and indeterminate

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bRadial and indeterminate

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cRadial and indeterminate

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dSpiral and determinate

✓



All the animals of the grade radiata are____________?


aDiploblastic

✓


bTriploblastic

✖


cBoth

✖


dUnicellular

✖


View Answer Diploblastic

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