Which of the following is not a variety of rice?

Which of the following crops produces recalcitrant seeds?

What are the duties of a veterinary doctor in the management of a poultry farm?

Name the crop which had its birth place in Tropical America but now the centre of production is Mid-west $USA$.

Which of the following has been recently used for increasing the productivity of super milch cows?

Which of the following ways are suitable for increasing food production?
$I$. Agrochemical-based agriculture
$II$. Organic agriculture
$III$. Genetically engineered crop-based agriculture
Choose the correct option.