Rice plant (Oryza sativa) is one of the most widely grown cereal crops in the tropical and subtropical regions of the world. Currently, rice and wheat are the only two cereal crops competing for prime places.



Rice is one of the world’s most important food crops more than half of the people in the world eat this grain as the main part of their meals, mostly rice is very popular in Asia.



Rice is a cereal grain like other cereal grains, including wheat, corn, and oats, rice plant to the grass family.



But unlike other grains, rice grows best in shallow water. Rice thrives in many tropical areas because of its warm, wet climate.



Farmers usually flood rice fields to supply the growing plants with moisture and to kill weeds and other pests. China and India are the worlds leading rice-producing countries. Together they produce more than half of the world’s yearly rice harvest.
The Rice Plant
Young rice plants have a bright green color. As the grain ripens, these plants turn golden yellow. The grain becomes fully ripe from 110 to 180 days after planting depending on the variety.



Structure



The main parts of mature rice plants are the



Roots


Stems


Leaves


Head


A system of slender roots supports the plant’s hollow stems. Each stem has at least five or six joints from which the long, narrow leaves grow the head, also known as the panicle grows from the top joints.



The panicle holds the kernels. That is the seed or grain of the rice plants each panicle carries from 60 to 150 kernels.

for further reading:[i][/i] https://bnethub.com/rice-plant-production-cultivation-uses/