CBSE Class XI Science Solutions

Displaying 5 out of 15 questions & answers.
Q1.

What is the food of plants?

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The food of plants is glucose (sugar), produced through photosynthesis.

Q2.

What do plants use to make their food?

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Plants use sunlight, water, and carbon dioxide to make their food.

Q3.

Name a plant that makes its food but gets water and nutrients from another plant.

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Mistletoe is a plant that makes its own food but gets water and nutrients from host plants.

Q4.

Choose the correct answer.

  1. Which parts of a plant make food?
    1. flowers
    2. leaves
    3. roots
    4. fruits
  2. Which part/parts of a leaf takes/ take in carbon dioxide?
    1. chlorophyll
    2. veins
    3. stomata
    4. all of these
  3. What part does chlorophyll play in photosynthesis?
    1. It takes sugar and waste to the leaves.
    2. It uses the Sun's energy to make food.
    3. It takes in water from the soil.
    4. It breaks down air to get carbon dioxide.
  4. During photosynthesis, water and carbon dioxide are changed into _____________________.
    1. air and sunlight
    2. water and air
    3. sugar and water
    4. sugar and oxygen
  5. What do plants do with the food they make?
    1. They release it into the air.
    2. They use it to grow.
    3. They change it into oxygen.
    4. They change it into water.
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  1. (b) leaves
  2. (c) Stomata
  3. (b) It uses the Sun's energy to make food.
  4. (d) sugar and oxygen
  5. (b) They use it to grow.
Q5.

Say whether the following statements are true or false. Correct the false statements.

  1. During photosynthesis, plants take in oxygen and give out carbon dioxide.
  2. Plants can carry out photosynthesis during the day and at night.
  3. Plants make sugar from water and carbon dioxide during photosynthesis.
  4. Photosynthesis takes place in all parts of the plant.
  5. The sundew plant feeds on insects because it cannot make its own food.
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