NCERT Class VII Science Solutions: Chapter 17-Forests: Our Lifeline Part 5

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Question 11:

Which of the following is not a forest product?

  1. Gum

  2. Plywood

  3. Sealing wax

  4. Kerosene

Answer:

IV. Kerosene

Question 12:

Which of the following statements is not correct?

  1. Forests protect the soil from erosion.

  2. Plants and animals in a forest are not dependent on one another.

  3. Forests influence the climate and water cycle.

  4. Soil helps forests to grow and regenerate.

Answer:

II. Plants and animals in a forest are not dependent on one another.

Question 13:

Micro-organisms act upon the dead plants to produce.

  1. Sand

  2. Mushrooms

  3. Humus

  4. wood

Answer:

III. Humus

Bacteria and fungi also help create soil. They decompose dead plants and animals for energy. The leftover plant and animal matter is called humus.

This diaagram show how to create the soil

Created the Soil - Gumus

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