EASY
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In the buccal cavity of frog the internal nares are
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Important Questions on Structural Organisation in Animals
HARD
Select the correct route for the passage of sperms in male frogs.
MEDIUM
Assertion (A): During pulmonary respiration in frog, buccopharyngeal cavity acts like a force pump.
Reason (R): When the floor of buccopharyigeal cavity is lowered, air forces the glottis to open and reach the lungs.
The correct option among the following is:
EASY
Which of the following statements is incorrect about the frog?
(i) Eyes are bulged out and covered by a nictitating membrane that protects them while in water.
(ii) On either side of the eyes a membranous tympanum (ear) receives sound signals.
(iii) The hind limbs end in four digits and they are larger and muscular than fore limbs that end in five digits.
(iv) Feet have webbed digits that help in swimming.
(v) Frogs exhibit sexual dimorphism.
EASY
In a frog, if a hole is punched in the floor of its buccal cavity, then the frog will not die as
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Which of the following is not observed in Rana tigrina?
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Poikilothermy due to mixing of pure and impure blood arises in
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Identify the wrong statement:
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_______ is absent in frog.
EASY
Skin is a respiratory organ in
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The forelimbs of frog do not contain:
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Which of the following is correct w.r.t. Rana tigrina?
EASY
In water, ______ acts as the aquatic respiratory organ of frog.
MEDIUM
Frog respires through ______ during hibernation and aestivation.
EASY
The figure given here shows diagrammatic representation of internal organs of frog.
Identify to and select the correct option.
MEDIUM
In frog, the elimination of nitrogenous wastes is carried out by a well developed excretory system. The excretory system consists of
a. One pair of kidney
b. Ureters
c. Cloaca
d. Urinary bladder
e. Urethra
MEDIUM
Which of the following is an incorrect statement?
EASY
Layer of actively dividing cells in skin of frog is termed as stratum
EASY
Bidder’s canal is found in:
EASY
Closed circulatory system occurs in
