i. In the pictures we can observe the changes in agricultural practices. It shows the transition from traditional to modern agriculture.

(a) Initially man cultivated crops using only manual labour. Later he started using various animals like bullocks to cultivate crops.

Today we use modern machines for various agricultural practices.

(b) Irrigation too has changed – from water allowed to flow freely in the field though pipes, man now uses modern methods like sprinkler & drip irrigation. 

(c) Poultry farming is supplementary to cultivation of crops & is included in agriculture. Initially hens were reared in small numbers in open areas. But today hens are reared on a large scale. With use of modem techniques it leads to large scale production of eggs.

ii. Traditionally agriculture was carried out using manual labour & bovine power. Today modem methods of agriculture include using machines tractors, harvests, fertilizers, insecticides, pesticides, etc. for better yield of crop.

Irrigation is used for ample water supply throughout the year to maximize crop production. Modern, scientific techniques & use of hybrid seed, leads to more productivity of land, (more crop production in limited land area)