Give one word for the following:
$(a)$ Farming without the use of chemicals as fertilizers,herbicides,and pesticides is known as . . . . . . .
$(b)$ Growing of wheat and groundnut on the same field is called as . . . . . . .
$(c)$ Planting soybean and maize in alternate rows in the same field is called as . . . . . . .
$(d)$ Growing different crops on a piece of land in pre-planned succession is known as . . . . . . .
$(e)$ Xanthium and Parthenium are commonly known as . . . . . . .
$(f)$ Causal organism of any disease is called as . . . . . . .

Poultry farming is undertaken to raise the following:
$(i)$ Egg production
$(ii)$ Feather production
$(iii)$ Chicken meat
$(iv)$ Milk production

$A$ farmer had a plot just beside the bank of a river. Each time he planted $Kharif$ crops,the crops got damaged due to floods. He consulted an agricultural scientist who gave him a special variety of seeds and also advised him to practice fish farming.
$(a)$ What was the specialty of these seed grains?
$(b)$ What name can be given to this type of fish farming?

$A$ farmer wanted to invest some money in fish farming. But he did not get right guidance.
$(a)$ How can you guide him for a profitable business in spite of limitations of fish farming?
$(b)$ What is the limitation of fish farming?

While studying about irrigation in her textbook,Bhanika read that proper irrigation is very important for the success of crops. Ensuring that the crops get water at the right stages during their growing season can increase the expected yields of any crop. She then thought about how irrigation is necessary in daily life,and considered sources like wells,rivers,and tanks as irrigation systems. She also shared this knowledge about irrigation systems with her friends.
$(a)$ According to you,what kind of qualities are seen in Bhanika?
$(b)$ Explain how rivers are an effective irrigation system.

Cattle husbandry is done for the following purposes:
$(i)$ Milk production
$(ii)$ Agricultural work
$(iii)$ Meat production
$(iv)$ Egg production