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25 Cards in this Set
- Front
- Back
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Most common species of frog found in India is - (common and scientific name) |
Indian/ Asian Bullfrog Rana tigrina (Hoplobatrachus tigerinus) |
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Frogs have the ability to change colour to hide them from their enemies called ____________. |
Camouflage |
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The protective coloration of frog is known as ____________. |
Mimicry |
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Give taxonomical Classification of Rana tigrina |
Kingdom - Animalia Phylum - Chordata Class - Amphibia Order - Anita Family - Dicroglossidae Genus - Hoplobatrachus Species - tigerinus |
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Skin of frog is __________ and ____________ due to presence of ____________. It is always maintained in _________ condition. |
Smooth, slippery, mucus, moist |
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Give the usual colour of Rana tigrina |
Dorsal - Olive green with dark irregular spots Ventral - Uniformly pale yellow |
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How does frog ingest water? |
It does not drink, but absorbs through skin |
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Body of frog is divisible into ________. __________ are absent. |
Head and trunk, neck and tail (adults) |
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Where and how many nostrils are there in frog? |
Above the mouth, pair of eyes |
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Structure of eyes in frog |
Bulged and covered by nictitating membrane |
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Function of nictitating membrane |
Underwater eyes protection |
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Location and name of structure for receiving sound signals |
On either sides of eyes, tympanic membranes |
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Number of digits in frog limbs |
Fore - four Hind - five |
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Sexual dimorphism in frogs |
Males - 1. Sound producing vocal sacs 2. Copulatory pad on first digit of fore limbs These are absent in females |
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Alimentary canal in frog is (long/short). Give reason |
Short because frogs are carnivores, hence length of intestine is reduced |
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Food is captured by __________ tongue in frogs. |
Bilobed |
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Undigested solid waste in frogs passes out through __________. |
Cloaca |
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Method of respiration in water of frog |
Skin (cutaneous respiration) (main) and gills (negligible amt.) Dissolved oxygen is exchanged through skin by diffusion |
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Method of respiration on land of frog |
Buccal Cavity, skin and lungs (pulmonary respiration) |
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Path of pulmonary respiration in frogs |
Nostrils - Buccal Cavity - lungs |
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Frogs sleep in ___________ season. This sleep known as __________. |
Summer and winter Aestivation and Hibernation resp. |
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In frogs, during aestivation and Hibernation gaseous exchange takes place through ____________. |
Skin |
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____________ digestive gland is present in man but absent in frog. |
Salivary |
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Function of ear in frog |
Hearing and Balancing organ |
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Where is jelly deposited as covering on egg of frog? |
In oviduct |
