Animal Kingdom

Multiple Choice Questions

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All worms are :

  • triploblastic

  • segmented

  • endo-parasites

  • free - living

A.

triploblastic

All worms which belongs to phylum Platyhelminthes and Aschelminthes are triploblastic i.e. body is composed of three primary germ layers, namely, ectoderm, mesoderm and endoderm. These may be either endo-parasites or exo-parasites and generally devoid of body segmentation.

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    The excretory material of bony fish is:

    • urea

    • protein

    • ammonia

    • amino acid

    Answer

    Food storage in Leucosolenia occur by :

    • ostia

    • osculum

    • thesocyte

    • spongocoel

    Answer

    Which of the following is not found in Hydra ?

    • Epithelio-muscular cells

    • Cnidocyte

    • Choanocyte

    • Nerve cells

    Answer

    Which of the following symmetry is found in adult sea-anemone ?

    • Radial

    • Biradial

    • Bilateral

    • Spherical

    Answer
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    Which insect is useful for us ?

    • Periplaneta

    • Musca

    • Bombyx

    • Mosquitoes

    Answer

    Body cavity of adult Ascaris is :

    • haemocoel

    • amphicoel

    • pseudocoel

    • schizocoel

    Answer

    Class Crustacea differ from Insecta in having:

    • two pairs of antennae

    • jointed foot

    • chitinous cuticle

    • none of these

    Answer

    Pearl oyster is a mollusc which belongs to class :

    • Cephalopoda

    • Pelecypoda

    • Scaphopoda

    • Gastropoda

    Answer
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    Which of the following character is presence essentialy in chordates ?

    • Ventral spinal chord

    • Dorsal heart

    • Pharyngeal gill slits

    • Blood flow in forward direction in ventral blood vessels

    Answer
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