Plants
must:
1. Take in water, mineral salts, and carbon dioxide.
2. Eliminate waste water and oxygen.
3. Distribute food within the plant after it is made in the
leaves.
The following will discuss how the plant does these
things.
1. Water Uptake By Roots:
A. Carried
out by root hairs located at the zone of differentiation.
B. Many root hairs increase the surface
area available for water absorption.
C. Fugal hyphae attached to roots also absorb
water and pass it on to roots.
D. The
process of water intake at the roots is called osmosis. Osmosis is the
movement of a substance through a membrane. Water moves because the
overall water potential (amount of
water) in the soil is higher than the water potential in the roots and plant
parts.
hope it helps you!
