Book : Botany
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Posted by: CHELSEA
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Writer CHELSEA

Fungi

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Fungi are eukaryotic organisms. They are non-vascular organisms. They reproduce by means of spores. Depending on the species and conditions both sexual and asexual spores may be produced. They are typically non-motile. Fungi exhibit the phenomenon of alteration of generation. The vegetative body of the fungi may be unicellular or composed of microscopic threads called hyphae. The structure of cell wall is similar to plants but chemically the fungi cell wall are composed of chitin. Fungi are heterotrophic organisms. 

They fungi digest the food first and then ingest the food, to accomplish this the fungi produce exoenzymes. Fungi store their food as starch. Biosynthesis of chitin occurs in fungi.The nuclei of the fungi is very small.During mitosis the nuclear envelope is not dissolved. Nutrition in fungi - they are saprophytes, or parasites or symbionts. Reproduction in fungi is both by sexual and asexual means. Sexual state is referred to as teleomorph, asexual state is referred to as anamorph.


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