Pollen grains can be stored for several years in liquid nitrogen having a temperature of________
A. - 196°C
B. - 120°C
C. -80°C
D. -160°C
Answer:A
Pollen grains can be stored for several years in liquid nitrogen having a temperature of________
A. - 196°C B. - 120°C C. -80°C D. -160°C