NCERT Class VII Science Solutions: Chapter 11-Transportation in Animals and Plants Part 2

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Question 3:

Choose the correct option:

  1. In plants, water is transported through.

  2. Xylem.

  3. Phloem.

  4. Stomata.

  5. Root hair.

  6. Water absorption through roots can be increased by keeping the plants.

  7. In the shade.

  8. In dim light.

  9. Under the fan.

  10. Covered with a polythene bag.

Answer:

  1. In plants, water is transported through (A) Xylem.

As showing in Image is a result for Xylem.

Result for Xylem

  1. Water absorption through roots can be increased by keeping the plants (C) Under the fan.

Question 4:

Why is transport of materials necessary in a plant or in an animal? Explain.

Answer:

The cells of different organs of plants and animals need various necessary substances to carry out many metabolic activities and different type of waste products are created during these metabolic activities. So, transport of materials is necessary to supply the required substances and to remove the waste products.

Question 5:

What will happen if there are no platelets in the blood?

Answer:

Platelets are responsible for clotting of blood. If there are no platelets, the blood would not clot in case of an injury. This will lead to excess blood loss and finally in death of the person.

Image shows Normal and Low Platelet Count

Normal and Low Platelet Count

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