One major difference between ectomycorrhizae and arbuscular mycorrhizae is that ectomycorrhizae do not penetrate plant roots; arbuscular mycorrhizae penetrate plant roots.
This means that there is a difference how the fungus colonizes the host plant's root tissues. arbuscular mycorrhizal fungi (AMF or AM), colonizes the host plant intracellularly, while the <span>ectomycorrhizal fungi </span>extracellularly.
She is being observant and monitoring results based on variation of grades
Answer:
The answer is difference threshold.
Explanation:
Also called just-noticeable difference or least perceptible difference, the difference threshold is the degree of a stimulus that must be changed in order to be recognised.
For it to be considered a difference threshold, the difference must be identified at least 50% of the time.
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