1. Eukaryotic organisms
2. archaebacteria
3. Early plants called blue-green algae
4. Eubacteria
archaebacteria
1. The Continental shelves
2. Unglaciated terrain
3. Sedimentory rocks
4. Igneous rocks
Sedimentory rocks
1. 10000 years
2. 12 billion years
3. 3.6 billion years
4. 0.3 billion years
3.6 billion years
1. Palaeozoic, Coenozoic, Mesozoic
2. Precambrain, Mesozoic, Coenozoic, Palaeozoic
3. Palaeozoic, Mesozoic and Coenozoic
4. Coenozoic, Mesozoic and Palaeozoic
Palaeozoic, Mesozoic and Coenozoic
1. The fossilized remains of simple plants that are over five billion years old
2. 3.8 billion years old rocks with isotopes of earbon that seem to represent the metabolic activity of the organisms
3. The mineralized remains of tiny animals
4. The fossilized remains of cellular colonies dating from about three million years ago
3.8 billion years old rocks with isotopes of earbon that seem to represent the metabolic activity of the organisms
1. Formation of oxygen
2. First human
3. Colonization of land by fungi
4. Evolution of animals
Formation of oxygen
1. A seal flipper
2. An octopus tentacle
3. A bird wing
4. Both (a) and (c)
Both (a) and (c)
1. The evolution is occurring now
2. The convergent evolution has occurred
3. The evolution occurs gradually
4. All the organisms are descended from a common ancestor
All the organisms are descended from a common ancestor
1. Pollen grains buried in the bottom of peat bogs
2. The petrified cast of calm's burrow
3. The impression, a clam shell made in mud , preserved in mudstone
4. All of the above
All of the above
1. Uniformitarianism
2. Artificial selection
3. Gradualism
4. Convergent evolution
Convergent evolution