how do cell walls of fungi differ from the cell walls of plants?

Answer 1

The cell wall is a well-defined polymeric matrix located just outside the plasma membrane of a cell. Cell walls can be composed of polysaccharides, protein, lipid, or a combination of these. Cell walls provide increased mechanical strength and resistance to lysis by osmotic shock (water moving into the cell). Cell walls do not usually play a role in regulating transport in or out of a cell.

Cell walls are found in the cells of eubacteria, archaebacteria, fungi, algae, and plants. The cell walls vary greatly in their compositions:

Eubacteria
Almost all eubacterial species have cell walls containing a polysaccharide called peptidoglycan. Among the eubacteria, differences in cell wall structure are a major feature used in classifying these organisms. For more information, see the section on eubacterial classification.

Archaebacteria
The cell walls of archaebacteria are distinctive from those of eubacteria. Archaebacterial cell walls are composed of different polysaccharides and proteins, with no peptidoglycan. Many archaebacteria have cell walls made of the polysaccharide pseudomurein.

Fungi
Fungal cell walls are typically composed of the polysaccharides chitin and cellulose.

Algae and Plants
The cell walls of algae and plants are composed mainly of the polysaccharide cellulose.

Answer 2

ergosterol content is much higher.
That's why ergosterol is a great drug target for killing fungal infections!