Fill in the blanks:
$(a)$ Fungi shows .............. mode of nutrition.
$(b)$ Cell wall of fungi is made up of ..............
$(c)$ Association between blue-green algae and fungi is called as ..............
$(d)$ Chemical nature of chitin is ..............
$(e)$ .............. has the smallest number of organisms with the maximum number of similar characters.
$(f)$ Plants without well-differentiated stem,root,and leaf are kept in ..............
$(g)$ .............. are called as amphibians of the plant kingdom.

(A-D) Fungi exhibit a saprotrophic mode of nutrition,where they obtain nutrients from decaying organic matter.
$(b)$ The cell wall of fungi is composed of a complex polysaccharide called chitin.
$(c)$ The symbiotic association between blue-green algae (or cyanobacteria) and fungi is known as lichens.
$(d)$ Chemically,chitin is a complex carbohydrate,specifically a nitrogen-containing polysaccharide ($N$-acetylglucosamine).
$(e)$ Species is the basic unit of classification and contains the smallest number of organisms with the maximum number of similar characters.
$(f)$ Plants that lack a well-differentiated body structure (stem,root,and leaf) are classified under the group Thallophyta.
$(g)$ Bryophytes are referred to as the amphibians of the plant kingdom because they require water for fertilization despite living on land.