The Fungi
Hi viewers:
Today we will discuss about the world of Fungi.
Definition of Fungi
A kingdom of eukaryotic, spore forming and saprophytic organisms that grow in irregular masses, without roots, stems, or leaves, and are devoid of chlorophyll or other pigments capable of photosynthesis. E ach organism (thallus) is unicellular to filamentous, and possesses branched somatic structures (hyphae) surrounded by cell walls containing chitin and containing true nuclei.
PROPERTIES FUNGI
Heterotrophic nutrition (parasitic or saprophytic)
Terrestrial
Thallus body
Reserve food material is glycogen
Cell wall- chitin
Pseudoparenchyma
Nonflowering
Microscopic or macroscopic
Reproduction- vegetative, asexual and sexual
Eg. Yeast, Mucor, etc
a. Mushroom
b. Sporangium of Mucor
Classify fungi up to subdivisions and mention characteristic features of each subdivision. (6)
Ans.
Main classification of fungi:
Fungi are classified into four classes such as:
1. Phycomycetes eg. Mucor, 2. Ascomycetes eg. Yeast (Saccharomyces), 3. Basidiomycetes, eg. Agaricus, and 4. Deuteromycetes eg. Fusarium.
Class 1. Phycomycetes: The hyphae of the fungi of this class are aseptate. They are coenocytic in nature eg. Mucor.
Class 2....