Advertisements
Advertisements
Question
Selective breeding is a process of ______.
Options
selecting the offspring with desired properties.
selecting the parents with desired properties.
selecting an area for breeding.
selecting fine hair for good quality wool.
Advertisements
Solution
Selective breeding is a process of selecting the parents with desired properties.
Explanation:
Selective breeding is the process of crossing of two selected varieties having different traits to produce a hybrid having good traits of both, e.g., some breeds of sheep possess only soft under-hair. Their parents are specially selected to give birth to sheep which have only soft under-hair.
APPEARS IN
RELATED QUESTIONS
Short Answer Type Question:
What are synthetic fibres?
A lady went to the market to buy a blanket. The shopkeeper showed her blankets made of acrylic fibres as well as made of wool. She preferred to buy an acrylic blanket. Can you guess why?
A polymer is a chain of many small units joined together which are called ______.
Complete the crossword given below with the help of clues.
Across
- Substance used as synthetic wool. (7)
- A plastic used for making containers and carry bags. (9)
- Substance made up of large number of smaller molecules. (7)
- Another name for this compound is artificial silk. (5)
Down
5. A type of fibre obtained naturally from cocoon. (4)
6. A synthetic fibre classified as polyester. (8)
7. A polymer used for making ropes. (5)
The rearing of silkworms for obtaining silk is called ______.
Explain the phrase – “Unity is Strength” on the basis of the making of fabric from fibre.
Fibres that are made using raw materials from ______ are synthetic fibres.
Boojho went to a cloth shop. There he found a fabric which was smooth to touch, had vibrant colour and shine. The fabric could be
Describe the two main processes of making fabric from yarn.
Complete the given analogy.
Coir fibre : ______ :: Cotton fibre : Cotton Plant
