Multiple Choice Questions

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Which one is uricotelic ?

  • Frog and toads

  • Lizards and birds/cockroach

  • Cattle, monkey and man

  • Molluscs and teleost fishes


B.

Lizards and birds/cockroach

Uricotelic organisms are the organism that excrete nitrogen mostly in the form of uric acid. Animals that live in dry (arid) conditions are uricotelic. Uric acid is the main excretory nitrogenous product, discharge in solid form in uricotelic animals. Eg, Cartilaginous fishe, bony fish, amphibians and mammals.


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Blastula of frog has :

  • blastopore

  • blastocoel

  • arahenteron

  • gastropore


Which of the following is a transparent tissue ?

  • Tendon

  • Fibrous cartilage

  • Hyaline cartilage

  • All of the above


Haemocoel is found in :

  • Hydra and Aurelia

  • Taenia and Ascaris

  • cockroach and Pila

  • Balanoglossus and Herdmania


Earthworms are economically important for man as these are used as

  • bait for catching fish

  • food of poultry

  • medicine for gout

  • All of the above


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Different colours of frog skin are controlled by:

  • hormones

  • melanocytes

  • nervous system

  • both 'a' and 'c'


The female genital pore of Pheretima posthuma located upon the segment ?

  • 14th

  • 16th

  • 18th

  • 15th


Vth cranial nerve of frog is called

  • optic nerve

  • vagus

  • trigeminal

  • opthalmic


Carotene pigment is found in the cells of

  • dermis

  • epidermis

  • adipose cell

  • both 'b' and 'c


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The centrum of eighth vertebra of frog is

  • procoelous

  • heterocoelous

  • amphicoelous

  • opisthocoelous


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