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| the offspring of a zebra and a donkey. |
| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
| mycorrhiza or mycorhiza (ˌmaɪkəˈraɪzə) | |
| —n , pl -zae, -zas | |
| ectotrophic mycorrhiza See endotrophic mycorrhiza an association of a fungus and a plant in which the fungus lives within or on the outside of the plant's roots forming a symbiotic or parasitic relationship | |
| [C19: from | |
| mycorhiza or mycorhiza (ˌmaɪkəˈraɪzə, -ziː) | |
| —n | |
| [C19: from | |
| mycor'rhizal or mycorhiza | |
| —adj | |
| myco'rhizal or mycorhiza | |
| —adj | |
| mycorrhiza (mī'kə-rī'zə) Pronunciation Key
The symbiotic association of the mycelium of a fungus with the roots of plants. The majority of vascular plants have mycorrhizae. The fungus assists in the absorption of minerals and water from the soil and defends the roots from other fungi and nematodes, while the plant provides carbohydrates to the fungus. There are two kinds of mycorrhizae: endomycorrhizae, in which the fungal hyphae enter the cells of the root cortex, and ectomycorrhizae, in which they surround the cells. |