A foundamental role
Fungi (singular: fungus) are single-celled or multicellular eukaryotic organisms that reproduce through spores and live by absorbing nutrients from organic matter. They were originally considered to belong to the plant kingdom because of their similarities in morphology and growth habit. But with the introduction of molecular techniques in taxonomy, fungi were reclassified into their own separate kingdom: Kingdom Fungi. Taxonomists discovered major differences of fungi from plants: fungi don’t have chlorophyll, unlike plants; and the cell wall of fungi is made up of chitin instead of cellulose. Yeasts are single-celled fungi while mushrooms are multicellular fungi.
According to scientists, there are approximately 1.5 million species of fungi in the planet but only 5 percent of them have been given proper identification. That figure makes fungi as one of the most biologically diverse organisms in the planet. Fungi have a fundamental role in nutrient cycling due to their ability to decompose organic matter. They have adapted to form symbiotic relationship with plants and animals for billion years. Many organisms depend on fungi for survival.