This document discusses the classification of living things based on their key characteristics and organization into kingdoms. The main characteristics used for classification are the type of cells, whether they are single or multicellular, and how they obtain nutrients. There are five kingdoms - bacteria, protists, fungi, plants, and animals - categorized according to these characteristics like whether their cells are prokaryotic or eukaryotic, and if they obtain nutrients through autotrophic or heterotrophic means.

1. UNIT 2 CLASSIFYING LIVING THINGS -NATURAL SCIENCE 5th
CHARACTERISTICS
The most important characteristics for classifying living things are:
• The type of cells (prokaryotic or eukaryotic).
• The number of cells (single-celled or multicellular).
• The way the perform their life processes. (autotrophic,
heterotrophic).
KINGDOMS
There are five major groups of living things (kingdoms):
• Bacteria Kingdom:
-prokaryotic cell
-single-celled beings
-autotrophic or heterotrophic nutrition
• Protists Kingdom (protozoanns, algae): eukaryotic cells
-single-cells or multicellular beings
-autotrophic or heterotrophic nutrition
• Fungi Kingdom (moulds, yeasts, mushrooms):
-eukaryotic cells
-single-celled or multicellular beings
-heterotrophic nutrition
• Plants Kingdom (plants without seeds, plants with seeds):
-eukaryotic cells
-multicellular beings
-autotrophic nutrition
-tissue system
• Animals Kingdom (invertebrates, vertebrates)
-eukaryotic cells
-multicellular beings
-heterotrophic nutrition
-highly specialised tissue systems