Give information about modern classification methods.

(N/A) $\rightarrow$ At present,phylogenetic classification systems based on evolutionary relationships between the various organisms are widely accepted.
$\rightarrow$ Numerical Taxonomy,which is now easily carried out using computers,is based on all observable characteristics.
$\rightarrow$ All characters and data are assigned numbers and codes. In this way,each character is given equal importance,and hundreds of characteristics can be considered simultaneously.
$\rightarrow$ Cytotaxonomy,which is based on cytological information like chromosome number,structure,and behavior,is also used.
$\rightarrow$ Chemotaxonomy uses the chemical constituents of plants to resolve taxonomic confusions.
$\rightarrow$ The plant kingdom is broadly classified into two groups: $(i)$ Non-flowering plants (plants without flowers or seeds) and $(ii)$ Flowering plants (plants possessing flowers or seeds).
$\rightarrow$ Non-flowering plants are further classified into three groups: $(i)$ Thallophyta,$(ii)$ Bryophyta,and $(iii)$ Pteridophyta.
$\rightarrow$ Flowering plants are classified into two groups: Gymnosperms and Angiosperms.
$\rightarrow$ Angiosperms are further classified into two classes: Dicotyledons and Monocotyledons.
$\rightarrow$ Bryophyta,Pteridophyta,and flowering plants are included in embryo-bearing plants.
$\rightarrow$ Algae were the first plants to exist on Earth; the study of algae is called Phycology.
$\rightarrow$ Professor $M$.$O$.$P$. Iyengar is known as the father of Indian Phycology.