Agricultural Science·Plant production · NSSCO 3.1a
Plant growth: conditions, diffusion, osmosis & roots
Narrated lesson · press play
On a hot afternoon a young maize plant droops as if it is dying — yet by evening, after a good watering, it stands firm and green again. How? In this lesson we meet the six conditions a plant needs to grow, follow water and dissolved minerals as they enter the root by diffusion and osmosis, discover the clever little root hair, and finally explain that daily miracle of wilting and recovery through turgor and plasmolysis.
What you'll learn in this lesson
By the end you should be able to (NSSCO Agricultural Science 3.1a):
- State the conditions necessary for plant growth and their importance
- Explain the absorption of plant requirements from the soil, including the principles of diffusion and osmosis and the passage of water and dissolved mineral salts through vascular tissues
- Explain the concept of turgor and plasmolysis
- Describe the structure and function of root hairs
Loading your lesson…
You're watching a free 3-minute preview — create a free account to keep going.
Quick revision
Revise this in 5 minutes
Miss Olivia and Mike talk through the whole topic — with the figure and working drawn live.