Multiple Choice Questions

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In frog, the vertebra with an anterior convex surface (i.e., double convexties) is

  • atlas

  • urostyle

  • 8th vertebra

  • 9th vertebra


D.

9th vertebra

The 9th or sacral vertebra is acoelous and highly specialised the anterior face is convex for this give greater strength them, it would be given if its anterior end are hollowed out the transverse process are stout and downwardly directed. The ileum of the pelvic girdle articulates with the transverse process of 9th vertibrae.


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What is left when bath sponges dries up

  • Spicules

  • Spongin fibres

  • Tentacles

  • Holdfast


Which cells are found only in sponges?

  • Amoeboid cells

  • Choanocytes

  • Pigment cells

  • Gland cells


A definite number of segments are found in

  • slug

  • earthworm

  • leech

  • tapeworm


Which of the following assists in the locomotion of the organism stated

  • Epithelium of' Pheretima

  • Trichocysts of Paramecium

  • Pedicellaria of Star fish

  • Posterior sucker of Hirudinaria 


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The red colour of 'red sea' is due to which of the following blue-green algae?

  • Chlamydomonas nivalis

  • Anabaena

  • Microcystis

  • Trichodesmium


The main excretory organ of prawn is

  • green gland

  • flame cell

  • Malphigian tubule

  • nephridia


Third cleavage of frog's development is

  • equatorial

  • vertical

  • latitudinal

  • none of these


Which of the following is not an insect?

  • Locust

  • Lepisma

  • Termites

  • Spider


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The scientist, who described the birds as glorified reptiles, was

  • Romer

  • Huxley

  •  Mendel

  • Robert Hooke


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