Question

Select the correct classification of Rana tigrina upto genus level?
A. Chordata, Craniata, Amphibia, Gnathostomata, Rana
B. Chordata, Craniata, Gnathostomata, Amphibia, Rana
C. Chordata, Craniata, Gnathostomata, Craniata, tigrina
D. Chordata, Craniata, Amphibia, Gnathostomata, tigrina

Answer 1

Rana tigrina is the most common species of frog found in india. Frogs are generally found in freshwater or in very damp places in land. Frogs are amphibians in nature so they can live on land as well as in water.

Complete answer:
Rana tigrina is a frog which is belongs
Genus- Rana
Class- Amphibia
Division- Gnathostomata
Subphylum- Craniata
Phylum- Chordata
General characteristics of frogs:
They are poikilothermic animals and mostly found in warm countries.
The skin is thin, moist, slimy and smooth due to the presence of mucus.
They have two pairs of limbs, i.e., forelimbs and hindlimbs which helps in swimming and walking.
The respiratory organs are lungs, buccopharyngeal cavity, skin and gills.
Skull is dicondylic (two occipital condyles for articulation with vertebral column).
The heart is three chambered having two auricles and one ventricle.
There are ten pairs of cranial nerves present.
Kidneys are mesonephric and frogs are ureotelic.

So the correct answer is option B.

Note: Frogs cannot live for a long time away from aquatic or very humid environments because it has no mechanism to control the evaporative water loss through the skin. Frogs are useful for farmers because they eat insects which are harmful for crops. Frogs eat mosquitoes which act as vectors for disease causing parasites.