CBSE Class 7 Science Heat Quiz 1

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1. Which one of the following is not a breed of sheep?

A Murrah B Marwari C Lohi D Nali

2. What is the scientific name of mulberry tree?

A Magnifera indica B Morus alba C Desmodium girence D None of these

3. Silk is derived from

A cocoon B pupa C egg D moth

4. Selective breeding is a process of

A selecting the offspring with desired properties. B selecting the parents with desired properties. C selecting an area for breeding. D selecting fine hair for good quality wool.

5. The general process that takes place at a sheep shearing shed is:

A removal of fleece. B separating hair of different textures. C washing of sheep fibre to remove grease. D rolling of sheep fibre into yam.

6. The rearing of silkworms for obtaining silk is called:

A cocoon B silk C sericulture D silviculture

7. Which of the following is not a type of silk?

A Mulberry silk B Tassar silk C Mooga silk D Moth silk

8. Paheli wanted to buy a gift made of animal fibre obtained without killing the animal. Which of the following would be the right gift for her to buy?

A Woollen shawl B Silk scarf C Animal fur cap D Leather jacket

9. Silk fibre is obtained from:

A fleece of sheep B cotton ball C cocoon D shiny jute stalk

10. Wool fibre cannot be obtained from which of the following?

A Goat B Llama C Alpaca D Moth

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