In frog heart, there are cardiac muscles which consists of fibres

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 Multiple Choice QuestionsMultiple Choice Questions

111.

In Pheretima, septa are absent between which segments?

  • 3/4 and 9/10

  • 4/5 and 8/9

  • 5/6 and 7/8

  • 7/8 and 6/7


112.

In cockroach, larval and nymphal characters are maintained by

  • ecdysone

  • salivary glands

  • parotid gland

  • juvenile hormone


113.

The female genital pore of Pheretima posthuma located upon the segment

  • 14th

  • 16th

  • 18th

  • 15th


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114.

In frog heart, there are cardiac muscles which consists of fibres called

  • Purkinje fibres

  • myonemes

  • telodendria

  • columnae carnae


A.

Purkinje fibres

The heart wall of frog is composed of 3 parts: Epicardium, Myocardium and Endocardium.

Myocardium is composed of branched and striated yet involuntary cardiac muscles. The fibres of the self excitatory and conducting muscle of the heart are of three type- Nodal fibres, Transitional fibres and Purkinje fibres.


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115.

Malphigian tubules are

  • excretory organs of insects

  • excretory organs of frog

  • respiratory organs of insects

  • endocrine glands of insects


116.

Compond squamous epithelium is found in

  • stomach

  • intestine

  • trachea

  • pharynx


117.

Striped muscles are characterized by

  • syncytial 

  • spindle shape

  • uninucleate

  • none of these


118.

Striped muscles are

  • anucleate

  • binucleate

  • uninucleate

  • syncytial


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119.

Inner lining of blood vessels is formed by

  • ciliated epithelium

  • squamous epithelium

  • cubical epithelium

  • columnar epithelium


120.

Nucleated RBC is present in

  • man

  • rat

  • frog

  • rabbit


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