The most fundamental difference between plant hormones and plant growth regulators is that______
A. The molecular structure of the two is different
B. The biological activity of the two is different
C. The way they are combined is different
D. They are transported differently in the body
Answer:C
The most fundamental difference between plant hormones and plant growth regulators is that______
A. The molecular structure of the two is different B. The biological activity of the two is different C. The way they are combined is different D. They are transported differently in the body