Multiple Choice Questions

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Which one is not diploblastic?

  • Sponge

  • Cnidarian

  • Nematoda

  • Tenophora


C.

Nematoda

Diploblastic animals have two primary germ layers ectoderm and endoderm as in Porifera, Coelenterata and Ctenophora. Sponges belong to Phylum- Porifera, Cindarian belongs to Phylum- Coelenterata and tenophora belongs to Phylum- Ctenophora.


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Which of the following is made up of a single bone in mammals?

  • Dentary

  • Hyoid

  • Upper jaw

  • All of these


Water vascular system is characteristic of

  • Protozoa

  • Porifera

  • Annelida

  • Echinodermata


Leveret is young one of

  • eagle

  • hawk

  • deer

  • None of these


Which one of the following animals lay eggs yet the female secretes milk?

  • Bat

  • Kangaroo

  • Platypus

  • Ostrich


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Gemmule formation in sponges are useful in

  • asexual reproduction

  • sexual reproduction

  • parthenogenesis

  • parthenocarpy


A sponge harmful to oyster industry is

  • Cliona

  • Euspongia

  • Hyalonema

  • Spongilla


Moulting in snakes is done by shedding

  • comified cells

  • stratified germinativum

  • epidermis

  • dermis


Sycon belongs to a group of animals which are best described as

  • multicellular with a gastrovascular system

  • multicellular having tissue organisation, but no body cavity

  • unicellular or acellular

  • multicellular without any tissue organisation


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During its life cycie, Fasciola hepatica (liver fluke) infects its intermediate host and primary host at the following larval stages respectively

  • metacercaria and ceracaria

  • miracidium and metacercaria

  • redia and miracidium

  • cercaria and redia


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