Tiêu đề 7 structural organisation in animals ppt - part 5.pdf ✅

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bankofbiology.com • Rana tigrina is the most common species in India. • They are poikilotherms(cold blooded). • They can change colour to hide them from their enemies (camouflage). This protective coloration is called mimicry. • During summer and winter, they undergo aestivation (summer sleep) and hibernation (winter sleep) respectively to protect them from extreme heat and cold. Phylum Chordata Class Amphibia Genus Rana Species tigrina FROG (Rana tigrina) SYSTEMATIC POSITION
bankofbiology.com • Body is divisible into head & trunk. Neck and tail absent. • Skin is moist, smooth and slippery due to the mucus. • Colour of dorsal side is olive green with dark irregular spots and ventral side is pale yellow. • The frog never drinks water but absorb it through the skin. • A mouth, paired nostrils and bulged eyes (covered by nictitating membrane) are present. FROG (Rana tigrina) MORPHOLOGY