Importance of classification

• Classification helps to understand evolution, as both are closely related.

• Classification helps to know the relationship between different plants/organisms, as organisms are put together on the basis of similarities.

Important phylum of plant kingdom

• Thallophyta

• Bryophyta

• Pteridophyta

• Gymnosperm

• Angiosperm

Animals belonging to the following phylums

(a) Porifera – Sycon, Spongilla

(b) Ceolenterata – hydra, sea anemone

(c) Annelida – earthworm, leeches

(d) Mollusc - octopus, pila