The Kingdom : Plantae

Kingdom Plantae includes all eukaryotic chlorophyll-containing Organisms are commonly called plants. Some members are partially heterotrophic such as insectivorous plants or parasites. Bladderwort and Venus fly trap are examples of insectivorous plants and Cuscuta is a parasite. Plant cells have a eukaryotic structure consisting of prominent chloroplasts and a cell wall mainly composed of cellulose.

Plantae kingdom include algae, bryophytes, pteridophytes, gymnosperms, and angiosperms. The life cycle of plants consists of two distinct phases which alternate with each other:

Diploid sporophytic and

Haploid gametophytic

The lengths of the haploid and diploid stages, and whether these stages are free-living or dependent on others, vary between different groups in plants. This phenomenon is called alternation of generations. Kingdom Plantae is having around 250,000 species.

Organisms in the Plantae kingdom

They include familiar organisms such as trees, herbs, bushes, grasses, vines, ferns, mosses, and green algae.

Algae

Plants belonging to this group lack a well defined body structure and example is Spirogyra.

Bryophyta

Plant body differentiated into stem and root, but plants lack a vascular system and example is Merchantia.

Pteridophyta

Plant body is differentiated into stem, roots and leaves and they have a vascular system. They do not bear seeds and example is Ferns.

Gymnosperms

They have a well differentiated plant body and vascular system and plants bear seeds (seeds however are naked) and example is Pine.

Angiosperms

Plant body well differentiated and plants bear seeds (seeds enclosed within fruits) and example is Mango.