BIOA02H3 Chapter Notes - Chapter 23: Mycelium, Cytoplasmic Streaming, Chytridiomycota
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BIOA02H3 Full Course Notes
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Document Summary
50 million years ago fungi- digest cellulose ants relationship with fungi in order to have source of carbon (cellulose ) and the fungi have a secure habitat with no competition symbiosis. Most fungi form symbiotic relationships with other organisms. Fungi present on land 760 million years ago. Presence on land was important for survival of land plants due to symbiotic association with them. Relied on fungi to obtain nutrients from nutrients poor soil from early land. General characteristics of fungi: some unicellular, most multicellular. Diploid life stage depend on haploid body body all haploid. Get carbon by breaking down organic molecules made by other organisms. Take carbon source directly from the host. Can also act as decomposer when host is dead. Mutually beneficial interaction- provide service in return (water or nutrients from soil) Secrete enzymes into the environment which break down larger molecules into smaller soluble molecules that can be absorbed into the cell.
