Class 4 EVS - Complete In-Text & Exercise Questions
PART 1: IN-LESSON QUESTIONS
A
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1. Why are all those birds making sounds and flying in a line when returning to their homes in the evening? (Page 188)
Answer: When birds return home in the evening, they make sounds to guide their little ones and to find and stay with their mates.
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2. Does the behaviour of birds and animals change with time? (Page 188)
Answer: Yes, birds and animals show specific activity patterns depending on the time of day—some are active at dawn and dusk (crepuscular), some during the day (diurnal), and others at night (nocturnal).
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3. Why do some animals and birds live and move in groups? (Page 192)
Answer: Animals and birds live and move in groups to stay safe from enemies, find food easily, and raise their young ones successfully.
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4. Why do birds like cranes and geese fly in a V-formation during long journeys? (Page 192)
Answer: Flying in a V-formation helps birds reduce air resistance, save energy during long journeys, and keep the group together safely.
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5. Who leads an elephant herd? (Page 194)
Answer: An elderly female elephant leads the elephant herd.
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6. How does schooling (swimming together) help fish? (Page 194)
Answer: Swimming together in the same direction confuses bigger predatory fish and helps keep the school of fish safe.
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7. Match the group behaviors with the correct animals: (Page 196)
1. A Flock of( b )a) Fishes2. A Herd of( d )b) Birds3. A School of( a )c) Bees4. A Swarm of( c )d) Elephants
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8. What are insects? (Page 198)
Answer: Insects are small animals with six legs that live almost everywhere around us.
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9. How do bees and butterflies help farmers? (Page 198)
Answer: Bees and butterflies carry pollen from flower to flower, assisting in pollination which helps farmers get a better crop yield.
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10. How do wasps and ladybird beetles act as natural pest controllers? (Page 198)
Answer: They eat crop-destroying caterpillars and harmful pests, protecting crops naturally without chemical pesticides.
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11. Should we harm small insects like dragonflies and beetles while playing? Why? (Page 200)
Answer: No, we should never harm them. Every creature on Earth plays an essential role in maintaining the balance of nature.
PART 2: IMPROVE YOUR LEARNING
B
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1. Which of these animals is active at night? ( C )Correct Answer: C) Owl
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2. Which animal usually lives and works in a group? ( C )Correct Answer: C) Ant
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3. What is called when animals move together in a group for protection?
Answer: It is called herding (or group behavior like flocking for birds and schooling for fish).
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4. Name one insect that is useful to us.
Answer: Honeybee (gives us honey and helps in pollination) or Silkworm (gives us silk).
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5. Why do birds build nests?
Answer: Birds build nests to lay eggs, hatch them safely, shelter from climate conditions, and raise their chicks securely away from predators.
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6. Why do animals like deer live in herds?
Answer: Deer live in herds for mutual protection against predators, to search for food safely, and to protect their young ones.