History of Life on Earth Worksheet
Explore the major events in the history of life on Earth, from early cells to complex organisms.
Includes
Standards
Topics
History of Life on Earth
Name:
Date:
Score:
Read each question carefully and provide your best answer. Some questions may require referring to the provided image.
1. Which of the following is considered the earliest form of life on Earth?
Dinosaurs
Prokaryotes
Mammals
Fungi
2. What significant event led to the diversification of life forms during the Cambrian Period?
The Permian Extinction
The Cambrian Explosion
The formation of the ozone layer
The evolution of photosynthesis
3. The first organisms to perform photosynthesis were , which led to the accumulation of oxygen in Earth's atmosphere.
4. The Age of Reptiles is also known as the Era.
5. Describe the endosymbiotic theory and its significance in the evolution of eukaryotic cells.
6. The extinction of the dinosaurs at the end of the Cretaceous Period was caused by a massive volcanic eruption.
True
False
7. Humans evolved directly from chimpanzees.
True
False
8. Observe the geological timeline below. Identify two major evolutionary events that occurred in different eras and briefly explain their significance.
