-If you cut off the top of a carrot and place it in water to see if you can get it to grow new roots, you should add
A)more than 10⁻² g/L of auxin.
B)approximately 10⁻⁸ g/L of auxin.
C)at least 10⁻⁶ g/L of auxin.
D)equal amounts of auxin and cytokinin.

Question

-If you cut off the top of a carrot and place it in water to see if you can get it to grow new roots, you should add
A)more than 10⁻² g/L of auxin. 
B)approximately 10⁻⁸ g/L of auxin. 
C)at least 10⁻⁶ g/L of auxin. 
D)equal amounts of auxin and cytokinin.

Quizplus · Accepted Answer

Auxins are plant hormones that promote root growth, and a concentration of approximately 10⁻⁸ g/L is effective for stimulating root development in cuttings.

-If You Cut Off the Top of a Carrot and Place