Question

Give brief account on plantae kingdom

Answer 1

Plants are mainly multicellular, predominantly photosynthetic eukaryotes of the kingdom Plantae. The term is today generally limited to the green plants, which form an unranked clade Viridiplantae.

Answer 2

Answer:

Kingdom Plantae includes green, brown and red algae, liverworts, mosses, ferns and seed plants with or without flowers. They have the following characteristics:

They are multicellular organisms with walled and frequently vacuolate eukaryotic cells.

These contain photosynthetic pigment in plastids. The principle mode of nutrition is photosynthesis.

They are primarily non-motile and live anchored to a substrate.

Reproduction is primarily asexual or sexual. The reproductive organs are multicellular. They form a multicellular embryo during development from the zygote. Algae lack the embryo stage.

The life cycle consists of alternating haploid gametophyte and diploid sporophyte generation. This phenomenon is called the alternation of generation.            

Explanation:

Thallophyta (Algae)

They are simple, autotrophic non-vascular plants. They have unicelled sex organs and no embryo formation. These grow in specialized habitats:

Bryophyta

Bryophyta (Gk: Bryon = moss; phyton = plants) is the grouping that consists of the simplest and primitive land plants.

Pteridophyta

The pteridophytes (Gk. Pteron = feather and phyton = plants) refers to all those plants with feathers like fronds of ferns. They do not have flowers or seeds.

Pteridophyta

The pteridophytes (Gk. Pteron = feather and phyton = plants) refers to all those plants with feathers like fronds of ferns. They do not have flowers or seeds.