Page 78 - Science Class 07
P. 78
loss of heat from their body. Hiberna on is a Amphibians like frogs can live both in water and
state of long sleep during which metabolic on land. They generally live on land. But they
ac vi es in the body are considerably reduced. give eggs in water of the ponds and ditches.
The young ones of the frogs look like fishes are
called tadpoles. Frogs breathe through their
lungs on land. But when they are in water they
breathe through their moist skin. They also
have webbed feet that help them to swim in
water.
Snake
What are cold-blooded animals?
Most of the higher animals including human
beings control their body temperature by a Frog
temperature control mechanism of their There are many regions of moderate climate,
body. They can maintain their body but they receive low rainfall around 50 cm
temperature in different weather condi ons. annually. Due to low rainfall, these regions have
But, there are many other animals who a few tall and strong trees. Most parts of these
cannot control their body temperature. regions are covered with grass. Therefore,
Their body temperature fluctuate with these regions are called grassland. As long
atmospheric temperature. These animals grasses are available here, a wide variety of
are called cold-blooded animals. To reduce herbivores are found here. Ca le, sheep, horse
the loss of body heat, they hide themselves
and many other herbivores are found here in
inside the earth during the winter. Rep les
large numbers.
and frogs are cold-blooded animals.
Snake Chameleon Frog
Ca le
78 Science-7
