Observe the bodies of the frog , duck & tortoise
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Observe the bodies of the frog, duck and tortoise.GillsScalesFins(1) Of what use are their legs to these animals ?(2) What helps frogs to breathe underwater ?(3) Of what use are the long hind legs of a frog ?(4) Why doesn’t a duck get wet in water ?
55As the frog and duck have webbed toes, they can use their legs like oars. Water flows off the waxy feathers of birds like duck and waterhen. Webbed toes, slippery, smooth skin and a triangular head help frogs to swim easily through water. They can live on land as well as in water due to their ability to breathe through the skin in water and using the nose and lungs on land. The typical colours of a frog’s back help it to hide among grasses.Make a list of the names of some other amphibians you know and study their adaptations.Adaptation in forest and grassland animals1.12 Lion1.11 DuckWebbed toesCarnivorous animals like the wild dog, fox, tiger and lion have strong legs to run fast and capture their prey. They have claws and their canine teeth are sharp and pointed. What is the function of such teeth ?Tigers have padded paws. This enables them to silently stalk their prey and capture it easily. The eyes of predatory carnivores are located in the front of their head. It helps them to spot their prey from a long distance.The eyes of herbivores are below the forehead, on either side of the head. This gives them wide-angle vision which helps to protect them from predators. Their legs are long and tapering with strong hooves, which enables them to run fast taking long leaps. Their long and freely moving ears can receive sounds from long distances and different directions. Deer and blackbucks have colours that merge with their surroundings. Their teeth are strong for chewing tough plant material.1.13 Blackbuck1.14 Desert animalsAdaptation in desert animalsDeserts are characterized by severe scarcity of water. Hence, desert animals have a thick skin to prevent loss of water from the body. Their legs are long with flat and cushioned soles. The nostrils are protected by folds of skin. The eyelashes are long and thick. Rats, snakes, spiders, lizards in deserts live in deep burrows during daytime and are active at night.
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there are many animals