Imp Questions For All Chapters – General Science Class 7
The Living World : Adaptations and Classification
Short Questions
1. What is adaptation?
→ Adaptation is the change in an organism’s body or behavior to survive in its surroundings.
2. Why do desert plants have thorns instead of leaves?
→ Thorns reduce water loss by preventing evaporation.
3. Why do aquatic plants have waxy leaves?
→ The waxy layer prevents water from staying on the leaves and protects them from rotting.
4. Why does a camel have padded feet?
→ Padded feet help camels walk easily on hot sand without sinking.
5. What helps fish breathe underwater?
→ Fish breathe through gills, which absorb oxygen from water.
6. Why do penguins have a thick layer of fat?
→ The thick fat layer keeps penguins warm in the cold polar regions.
7. What is the function of webbed feet in ducks?
→ Webbed feet help ducks swim easily in water.
8. Why do grassland animals have long, strong legs?
→ They help animals run fast to escape predators.
9. How do insects help plants?
→ Insects like bees help in pollination, which allows plants to reproduce.
10. Why do trees in snowy regions have a conical shape?
→ The conical shape helps snow slide off the branches without breaking them.
11. What is the main adaptation of a cactus?
→ A cactus stores water in its thick, green stem to survive in dry deserts.
12. Why do polar bears have white fur?
→ White fur helps polar bears blend in with the snow and avoid predators.
13. How do frogs survive on land and in water?
→ Frogs have lungs to breathe on land and can absorb oxygen through their skin in water.
14. Why do carnivores have sharp teeth?
→ Sharp teeth help them tear and eat meat easily.
15. What do herbivores eat?
→ Herbivores eat plants, grass, and leaves.
Long Questions
1. How do desert animals survive with less water?
→ Desert animals store water and food in their bodies. Camels have humps for fat storage, and many animals stay in burrows to avoid heat.
2. Why do fish have streamlined bodies?
→ A streamlined body shape helps fish move smoothly in water. It reduces resistance and allows them to swim fast without using much energy.
3. What are the adaptations of trees in snowy regions?
→ Trees in snowy regions have conical shapes and needle-like leaves. This prevents snow from collecting on branches and helps them survive the cold.
4. Why do animals in cold regions have thick fur?
→ Thick fur traps heat and keeps the body warm in freezing temperatures. Some animals also have a thick layer of fat under their skin for extra warmth.
5. How do animals protect themselves from predators?
→ Animals use camouflage to blend in with their surroundings and avoid predators. Some, like deer, have strong legs to run fast and escape danger.
6. What is special about the Venus flytrap?
→ The Venus flytrap is a carnivorous plant that catches insects for food. It has special leaves that close quickly when an insect touches them.
7. How do aquatic plants float on water?
→ Aquatic plants have hollow stems and air spaces in their leaves. These adaptations help them stay light and float on the water surface.
8. How do birds fly easily in the air?
→ Birds have hollow bones, lightweight feathers, and strong wings. These adaptations reduce their body weight and help them fly with less effort.
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