Question

Which of the following is the centre of origin of rice plants?
A. India and Japan
B. Australia
C. Russia
D. Indo Malayan region

Answer 1

Hint: Rice is a type of grass that is now the world's third-largest commodity. The Center of origin is given to two Asian countries.

Complete answer:
Rice is a species of grass that usually grows in wet and humid climates. It is currently the third-largest commodity being produced in the world and is a staple food source, especially in Asian countries. Rice is one of the oldest known crop species, as it has several thousand species and varieties. The Asian rice or Oryza sativa, has two major subspecies, Oryza indica, and Oryza japonica.
The origin of rice is heavily debated and multiple theories by scientists have been put forward. The most agreed-upon theory would be that rice originated in India more than 3500 years ago. Other scholars debate that rice originated in China and spread to Korea and Japan. The Asian rice is known to possess only two main subspecies, the Oryza indica, and Oryza japonica, which might indicate that a common type of rice variety had spread from the Indo-Chinese region, where one was domesticated in India and the other in Japan, and all other varieties of rice we know today belong to either of these two subspecies. Thus, we can say that rice originated in India and Japan.

Therefore, the correct answer is option A.

Note: The origin of rice is a debated topic. Multiple scholars from multiple countries contest the origin of rice. But it is believed that rice has a multi origin story, where it could have originated at a different location during the same time, independently.