1. Characteristics and classification of living organisms


 
1.1 Characteristics of organisms
All living things share some common features. Today we will have a look at what these features are.


 
1.2 Binomial system
The Binomial System is an international standard for naming organisms.


 
1.2 The role of DNA for classification – making a cladogram
DNA similarity reflects the evolutionary relationship of different organisms. The more similar the DNA, the more the organisms are related. In this video I show you how to construct a simple cladogram.


 
1.3 The five kingdoms of life | IGSE Biology
All living things belong to one of the following kingdoms: Plants, animals, fungi, protozoa and prokaryotes.


 
1.3 Chordates are animals that have a spinal cord | IGCSE Biology
Here I talk about the 5 classes of chordates: Mammals, birds, fish, amphibians, reptiles.


 
1.3 A first look at arthropods | IGCSE Biology
Arachnids, insects, crustaceans and myriapods belong to the arthropods. In this video we will have a closer look at them.


 
1.3 Flowering Plants | IGCSE Biology
The differences between dicots and monocots. We also have a look at ferns and mosses and I show you plant stem cross-sections under the microscope.


 
1.3 Viruses explained
Viruses are genetic material surrounded by a protein coat. Viruses are not alive because they can not reproduce on their own. They need a host cell to do this.