Question

The sperms employed for artificial insemination of cattle are stored in ...............

• A. Liquid oxygen
• B. Dry ice
• C. Liquid ammonia
• D. Liquid nitrogen

Answer 1

The correct option is D Liquid nitrogen

Artificial insemination (AI) is a globally accepted method of breeding cattle and is also effective for other species. An estimated worldwide total of 150 million cows are artificially inseminated. Semen can be stored deep-frozen in liquid nitrogen (N${}_2$), in a chilled liquid form or at room temperature. Hence, option D is correct.