Which of the Following is a Primary Difference Between Ectomycorrhizae

Question

Which of the following is a primary difference between ectomycorrhizae and endomycorrhizae?
A) Endomycorrhizae have thicker, shorter hyphae than ectomycorrhizae.
B) Endomycorrhizae, but not ectomycorrhizae, form a dense sheath over the surface of the root.
C) Ectomycorrhizae do not penetrate root cells, whereas endomycorrhizae grow into invaginations of the root cell membranes.
D) Ectomycorrhizae are found in woody plant species; about 85% of plant families form ectomycorrhizae.
E) There are no significant differences between ectomycorrhizae and endomycorrhizae.

Accepted Answer

Ectomycorrhizae do not penetrate root cells and instead form a dense sheath around the root, while endomycorrhizae grow inside the root cells, forming invaginations of the root cell membranes. This is the primary difference between the two types of mycorrhizae.