Unseen Passage for Class 6 with Questions

Reading comprehension lesson 21: Science and environment passages · Set 14 · 12 questions

Reading tip (Cause and effect): Find the topic of the passage in the first sentence. Look for cause-and-effect words: because, so, as a result. Work out new science words from the sentence that explains them.

1. 1.Green plants make their own food. This process is called photosynthesis. Leaves take in carbon dioxide from the air through tiny holes. Roots take up water from the soil. A green substance in the leaves, called chlorophyll, traps sunlight. Using the energy of sunlight, the leaf turns water and carbon dioxide into sugar. Oxygen is given out into the air. Animals and people breathe in this oxygen.
   
   Which gas is given out during photosynthesis? (a) Smoke (b) Water vapour (c) Carbon dioxide (d) Oxygen
2. 2.Bees visit flowers to collect sweet nectar. While they feed, yellow dust called pollen sticks to their hairy bodies. When a bee flies to the next flower, some pollen rubs off. This carrying of pollen is called pollination. Pollination helps plants make fruits and seeds. Mangoes, apples and many vegetables depend on it. Without bees, farmers would harvest far less food. So bees are tiny helpers of every farm.
   
   Why do bees visit flowers? (a) To lay eggs (b) To sleep (c) To collect nectar (d) To find water
3. 3.Every winter, thousands of birds fly to India from colder lands. These travellers are called migratory birds. Many of them come from Siberia and Central Asia. They escape the freezing cold and find food in our lakes and wetlands. Bharatpur in Rajasthan and Chilika Lake in Odisha are famous places to see them. Flamingos, cranes and ducks are among the visitors. In spring, the birds fly back to breed. Protecting wetlands keeps their winter homes safe.
   
   In which state is Chilika Lake? (a) Punjab (b) Odisha (c) Kerala (d) Rajasthan
4. 4.Green plants make their own food. This process is called photosynthesis. Leaves take in carbon dioxide from the air through tiny holes. Roots take up water from the soil. A green substance in the leaves, called chlorophyll, traps sunlight. Using the energy of sunlight, the leaf turns water and carbon dioxide into sugar. Oxygen is given out into the air. Animals and people breathe in this oxygen.
   
   What do leaves take in from the air? (a) sugar (b) carbon dioxide (c) oxygen (d) water
5. 5.Plastic is cheap, light and strong. But most plastic does not rot away like leaves or fruit peels. A plastic bag may stay in the soil for hundreds of years. Plastic thrown on the road often blocks drains during the monsoon. Cows and other animals sometimes swallow plastic with food scraps. In the sea, turtles can mistake floating bags for jellyfish. We can help by carrying cloth bags and saying no to straws. Sorting dry and wet waste at home also helps.
   
   How long may a plastic bag stay in the soil? (a) Ten minutes (b) Hundreds of years (c) A few days (d) One month
6. 6.Bees visit flowers to collect sweet nectar. While they feed, yellow dust called pollen sticks to their hairy bodies. When a bee flies to the next flower, some pollen rubs off. This carrying of pollen is called pollination. Pollination helps plants make fruits and seeds. Mangoes, apples and many vegetables depend on it. Without bees, farmers would harvest far less food. So bees are tiny helpers of every farm.
   
   Why does pollen stick to bees? (a) They are very sticky (b) They eat it (c) Their bodies are hairy (d) Their wings are wet
7. 7.The Sun heats water in seas, rivers and lakes. The water turns into an invisible gas called water vapour. This change is called evaporation. High in the sky, the vapour cools and turns into tiny drops of water. These drops join together to form clouds. When the drops become too heavy, they fall as rain. This is called precipitation. Rainwater flows back into rivers and seas, and the cycle begins again.
   
   Why do the drops fall as rain? (a) They become too hot (b) The Sun pulls them (c) They become too heavy (d) The wind blows them
8. 8.The monsoon is a seasonal wind that brings rain to India. In summer, the land heats up faster than the sea. Moist winds then blow from the sea towards the land. The south-west monsoon usually reaches Kerala in early June. Over the next few weeks, it spreads across most of the country. Farmers wait eagerly for it because many crops need its rain. Rice, for example, grows in fields full of water. A weak monsoon can mean a poor harvest.
   
   What does “eagerly” mean in the passage? (a) Sadly (b) Angrily (c) Lazily (d) Keenly
9. 9.The monsoon is a seasonal wind that brings rain to India. In summer, the land heats up faster than the sea. Moist winds then blow from the sea towards the land. The south-west monsoon usually reaches Kerala in early June. Over the next few weeks, it spreads across most of the country. Farmers wait eagerly for it because many crops need its rain. Rice, for example, grows in fields full of water. A weak monsoon can mean a poor harvest.
   
   What can a weak monsoon mean? (a) A cold winter (b) A big flood (c) More rice (d) A poor harvest
10. 10.Green plants make their own food. This process is called photosynthesis. Leaves take in carbon dioxide from the air through tiny holes. Roots take up water from the soil. A green substance in the leaves, called chlorophyll, traps sunlight. Using the energy of sunlight, the leaf turns water and carbon dioxide into sugar. Oxygen is given out into the air. Animals and people breathe in this oxygen.
    
    What is the main idea of the passage? (a) How roots grow long (b) Why leaves fall (c) How plants make food (d) Why animals breathe
11. 11.Green plants make their own food. This process is called photosynthesis. Leaves take in carbon dioxide from the air through tiny holes. Roots take up water from the soil. A green substance in the leaves, called chlorophyll, traps sunlight. Using the energy of sunlight, the leaf turns water and carbon dioxide into sugar. Oxygen is given out into the air. Animals and people breathe in this oxygen.
    
    What is the green substance in leaves called? (a) sugar (b) chlorophyll (c) oxygen (d) carbon dioxide
12. 12.The Sun gives us a huge amount of energy every day. Solar panels can turn sunlight into electricity. They are made of special cells that work when light falls on them. Many homes in India now have solar panels on their roofs. Some villages use solar lamps after dark. Solar energy does not make smoke, so it keeps the air clean. Unlike coal, it will never run out. However, panels make less power on cloudy days.
    
    True or false: Solar energy will run out one day. (a) True (b) False

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