Question

Pesticides infect the egg sheaths of the sparrows. Based on your understanding of what a ‘sheath’ is, choose

an option which lists the illustration/image that uses a sheath.​

Answer 1

SPARROWS – HERE TODAY, GONE TOMORROW?

• Option d) Image (iv) is correct.

• Sheath - it is a cover, given to the handles of blade, sword of knives.
• Like for egg sheaths of the sparrows, it means the cover on a living tissue, here the inside of an egg being covered by the outside white shell.

• This is why option d is correct.

Answer 2

The option (iv) from the following uses a sheath.

Explanation:

Sheath is a cover which closely fits the knife or sword. It is used to carry the sharp objects without any harm.

It is also used to refer the fat tissues that are just below the egg shells. The yolk is protected by sheath. When the pesticide infect sheath, then the eggs die.