Unit 4 · EvolutionIntroduction to Evolution
Words of This Lesson
- Evolution: the process by which the body of living things changes from simple to complex and new species develop
- Remains: parts or impressions of organisms of long ago, preserved in rock and soil
- Organic molecule: a molecule formed by chemical reactions between elements, which became the basis of life
- Virus: an extremely simple microscopic living form that arose after organic molecules formed
- Prokaryote: an organism of simple cells without an organised nucleus, such as bacteria
- Eukaryotic cell: a cell with an organised nucleus, more developed than the prokaryote
- Vertebral column: the chain of backbones that supports the body
- Amphibian: an animal able to live both in water and on land
- Mammal: an animal that feeds its young on milk
- Algae: simple green plants found in water
- Bryophyta: the group of small plants like mosses, more developed than algae
- Pteridophyta: the group of developed non flowering plants such as ferns
- Gymnosperm: a plant such as the pine that bears naked seeds without forming a fruit