Write a note on Ectomycorrhizae.State how they differ from Endomyorrhizae.Give the importance of mycorrhizae in agriculture. Mark 2+1+2=5
Answers
Answer:
An ectomycorrhiza, ectomycorrhizas or ectomycorrhizae is a form of symbiotic relationship that occurs between a fungal symbiont, or mycobiont, and the roots of various plant species.
Difference:
Ectomycorrhizae and Endomycorrhizae are two types of symbiotic relationships which exist between fungi and the roots of higher plants. Ectomycorrhizae, as the name suggests, do not penetrate deep into the plant (the cortical cells). Endomycorrhiza, on the other hand, tends to penetrate deeper (into the cortical cells). Read on to explore more differences between these two symbiotic relationships.
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Explanation:
A mycorrhiza is a symbiotic association between a green plant and a fungus. The plant makes organic molecules such as sugars by photosynthesis and supplies them to the fungus, and the fungus supplies to the plant water and mineral nutrients, such as phosphorus, taken from the soil. Mycorrhizas are located in the roots of vascular plants, but mycorrhiza-like associations also occur in bryophytes[4] and there is fossil evidence that early land plants that lacked roots formed arbuscular mycorrhizal associations.[5] Most plant species form mycorrhizal associations, though some families like Brassicaceae and Chenopodiaceae cannot. Different forms for the association are detailed in the next section. The most common is the arbuscular type that is present in 70% of plant species, including many crop plants such as wheat and rice.[6]