1818AgricultureMedium
The centre of origin of sunflower is________?
ASouth America
BWest Africa
CNorth America
DEast Asia
Correct answer
C. North America
Explanation
The correct answer is North America.
Correct answer
C. North America
Explanation
The correct answer is North America.
The first attempt to show linkage in plants were done in________?
The difference between saturation vapour pressure and actual vapour pressure at a constant temperature is called ________?
Source of negative charges on silicate clays is/ are________?
The slow acting pheromones are________?
Rice flowers have________?
Oxygen and Silicon together comprise approximately ________ %of the earth crust?