(b)
rn from the animals that easily adapt themselves?
5 Why do animals like yak, bear and snow leopard have thick fur?
Why does a cactus plant have long roots and leaves reduced to spines ?
7. How do aquatic animals breathe in water?
Long Answer Questions:
How do lions and deer adapt themselves to live in a forest habitat?
2. Explain how desert plants and animals are able to survive in a hot dry climate.
3. How is a frog adapted to live both on land and in water?
4 Discuss about plants that adapt themselves to survive in an aquatic habitat.
*L HOTS (Higher Order Thinking Skills) Questions:
1. Camel is called the 'ship of the desert'. Justify.
2. How does a sea animal, like dolphin, survive in water without gills?
NCERT Exemplar
1. Some desert plants have very small leaves whereas some others have or
Answers
Answer:
5 - The animals like yak, beer and snow leopard have thick fur because it help them to keep their body warm and enables them to survive in the extreme cold. The leaves in a cactus plant are modified into spines to prevent the loss of water. ... Loss of water from the leaves tend the roots to pull more water from the ground. The cactus plant grows in a desert where there is a shortage of water.
7 - Aquatic animals may breathe air or extract oxygen that dissolved in water through specialised organs called gills, or directly through the skin. Natural environments and the animals that live in them can be categorized as aquatic (water) or terrestrial (land).
long ans questions-
2 - In order for plants to survive in the desert, they have adaptations that allow them to collect and store water and moisture and, prevent moisture loss. The plants in the desert biome store water in their roots, stem, leaves, or fruit. Plants called succulents store water in their stems or leaves.
3 - An amphibian can live both on land and in water. ... Instead of drinking water, frogs soak the moisture into their body through their skin. Frogs breathe through their nostrils while also absorbing about half the air they need through their skin. Frogs use their sticky, muscular tongue to catch and swallow food.
4 - The most common adaptation is the presence of lightweight internal packing cells, aerenchyma, but floating leaves and finely dissected leaves are also common. Aquatic plants can only grow in water or in soil that is frequently saturated with water. They are therefore a common component of wetlands.
HOTS
1 - Camels are called ships of the desert because they carry very big loads from one side of the desert to the other. Dromedary camels can carry over two hundred kilograms on their backs. Camels walk four kilometers per hour through the hot desert. They can go like this for three weeks without water.
2 - They cannot breathe underwater like fish can as they do not have gills. They breathe through nostrils, called a blowhole, located right on top of their heads. This allows them to take breaths by exposing just the top of their heads to the air while they are swimming or resting under the water.
Explanation: