Water Uptake in Plant Roots

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5 Questions

What is the primary region of water uptake in roots?

Root tip

How far can the region of active water uptake extend down the root?

10 cm

At what distance from the tip does the region of active water uptake typically start?

0.5 cm

What factor does not affect the permeability of roots to water?

Soil temperature

Which of the following is a characteristic of the permeability of roots to water?

It varies widely with age and physiological conditions

Study Notes

Root Permeability to Water

  • The region of most active water uptake in roots is near the root tip.
  • Permeability of roots to water varies widely with factors such as age, physiological conditions, and the water status of the plant.
  • In young roots, the region most active for water uptake starts about 0.5 cm from the tip.
  • This active region can extend down the root as far as 10 cm.

This quiz explores how plant roots absorb water, including the region of most active water uptake and factors that affect permeability. Learn about the importance of root tip and how water status influences uptake.

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