Diversity in Living Organisms Notes

• This subkingdom includes plants that do not produce external flowers and seeds. The reproductive parts are hidden or inconspicuous in these plants. They reproduce through spores. The variation is observed in terms of body differentiation and vascular system.

Division Thallophyta: (Thallus-Undifferentiated, Phyta-plant):

• This subkingdom includes plants that bear external flowers and able to produce seeds.
• The reproductive parts are well developed in these plants.
• They reproduce through the formation of seeds which consist of embryo.
• The further classification depends upon the presence of naked seeds or seeds enclosed in fruits.

• Animals are eukaryotic, multicellular heterotrophic organisms having no cell wall. They are classified on the basis of some basic features.

Habitat:

• On the basis of habitat where organisms live they can be aquatic (water], terrestrial [land] or aerial [flying animals]. There are the organisms that can share more than one habitat.

Habit: