Bio 1214 lab 3
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Describe the basic plant anatomy
- 1. root, which is USUALLY below ground
- 2. the shootm, which consists of the stem, leaves and flowers, shoot is USUALLY above ground
Where do most of the absorbtion from plants absorb from?
The root hairs near the tip of the room, in top 15cm of soil
Why is mycorrhizae near the top of root/surface soil?
There is more oxygen near the surface, which is required for root respiration and growth of mycorrhizae
What is mycorrhizae and function?
Mycorrhizae(means "fungus roots") : Mutually beneficial relationships between such fungi and plant roots
fucntion: rely on these for essential nutrients, helps plants grow
What is the main functions of roots
to absorb water and minerals
keep plant anchored in soil
What are the two genral patterns of root morphology
a. taproots (ex. dandelion( that have dominant fertical root with smaller secondary roots
b. fibrous roots (eg grass) that consist of a mat of threadlike roots
How is each of these roots systems (taproots, fibrous roots) adapted to serve their basic functions?
taproot penetrate deeply, well adapted to deep soils where ground water not close to surface
fibrous root - shallow soils , places where rain fall is light , does not moisten soil much below surface
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