Question

How the plants are classified ?

Answer 1

Plant Kingdom
On the basis of the flowering and non flowering, the plants kingdom are divided into two sub - kingdom.

Cryptograms: They are non flowering plants. On the basis of their appearance they are divided into three division thallophyta, bryophyte, and pteridophyta.

Phanerogams: Phanerogams are the developed seed bearing and flowering plants
It is further divided into two sub divisions:

Sub division Gymnosperms:
They are cone bearing plants.
They grow in dry places.
They bear naked seeds.
Pollination takes place through wind.

Sub division Angiosperms:
They grow both in land and water.
They bear developed flowers.
Their seed are enclosed in true fruits.
They may be herbs, shrubs and trees.

Class monocotyledons:
A seed bears only one cotyledon.
Fibrous root is present.
Distinct nodes and inter nodes are present.
Leaves are elongated having parallel venation.

Class dicotyledons
A seed bears two cotyledons
Tap root is present
Distinct nodes and internodes are absent
Leaves are broad having reticulate venation.