Question

What is HYV seeds? Write its one merit and a limitation.

Answer 1

HYV seeds stands for Heigh Yielding Variety.

Merit of HYV seeds is they produce more amount of crops on a small piece of land which benefited the farmers to earn more money.

Although these are mordern farming methods but they have some demerits also. They need plenty of water to produce the best results which lower down the level of water table.
They are associated with the loss of soil fertility.

HOPE IT HELPS YOU

Answer 2

✔one ☑merit is:

H.Y.V stands for high yield variety. HYV seed are high yield variety seeds.
Advantage or merit : 
High Yielding Variety Seeds (HYV) has shorter life cycle and thereby enables the farmers to go for multiple cropping.
 
✔Disadvantage or ❎limit:

The major disadvantage associated with HYV seeds is bigger requirement of irrigation facility, chemical fertilizers and pesticides to produce best quality yield.

I hope it will help u⏫