Question

14. Which is an example of active transport?

A carbon dioxide entering a leaf
B. ion uptake by root hair cells
C. oxygen moving from the alveoli into the blood
D. water uptake by root hair cells

Answer 1

B. Ion uptake by root hair cells

Step-by-step explanation:

Ion uptake by root hair cells is an example of active transport, as it involves the movement of ions from an area of lower concentration (in the soil) to an area of higher concentration (inside the root cells).