Which of them is not an extrinsic factor? |
|||
a) |
Light, |
b) |
Temperature, |
c) |
Nutrient, water |
d) |
Growth regulator and genetic factor |
Which of them is not an extrinsic factor? |
|||
a) |
Light, |
b) |
Temperature, |
c) |
Nutrient, water |
d) |
Growth regulator and genetic factor |