List two characteristics each of roughage and concentrate in relation to animal feed. Give one example of each.

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

Distinguish between:
$(i)$ Inland fishery and marine fishery.
$(ii)$ Culture fishery and capture fishery.
$(iii)$ Apiculture and aquaculture.

Which one of the following nutrients is not available in fertilizers?

$(a)$ Give two examples of shellfishes.
$(b)$ Mention the names of four marine fish of high economic value.

Farmer $X$ planted Soyabean $+$ Maize $+$ Cowpeas in the same field simultaneously in a set row pattern. Farmer $Y$ planted cereal crop in one season and leguminous plants in the next season on the same piece of land in pre-planned succession. $(a)$ Name the cropping patterns used by farmers $X$ and $Y$. $(b)$ State two advantages of the different cropping patterns followed by farmers $X$ and $Y$ respectively.