6 Written Questions
6 Multiple Choice Questions
- the period in the geologic time scale beginning about 540 million years ago and ending about 248 million years ago- fish, sponges, corals, snails, clams, squids, and trilobites were abundant. Plants, fungi, and aerobic organisms colonized on land. Creepers began to crawl on land.
- a species of hominid that lived in Europe and Western Asia from 230,000 years ago to about 30,000 years ago
- an early hominid that evolved more than 3.6 million years ago
- the period in the geologic time scale beginning about 248 million years ago and lasting about 183 million years ago- called Age of the Reptiles. Dinosaurs, marine lizards, birds, cone-bearing trees, and starting flower bearing plants.
- a period in the geological time scale beginning when the Earth originated, 4.6 million years ago, and ending when complex organisms appeared, about 540 million years ago- no oxygen in the atmosphere and all creatures lived in the ocean to escape harmful UV rays. Prokaryotes only exsisted. They were anaerobic. Then, cyanobacteria (photosynthetic organisms) began to produce oxygen that seeped through the water, into the atmosphere, and formed the ozone layer. Eukaryotes began to develop.
- a species of humans with modern features that may have migrated out of Africa 100,000 years ago and eventually into every continent
5 True/False Questions
Hominids → family referring specifically to humans and several extinct human-like species, some of which were human ancestors, 4.4 million years ago
What was the first organism on Earth? → prokaryotic cells and then cyanobacteria
Prokaryote → a cell that does not have a nucleus or any other membrane-covered organelles; also called a bacterium
What are the characteristics of primates? → prokaryotic cells and then cyanobacteria
List the defining characteristics for each era. → Precambrian: cyanobacteria, eukaryotes, prokaryotes, oxygen in the atmosphere, ozone
Paleozoic: creepers, plants, aerobic animals
Mesozoic: Age of the Reptiles, dinosaurs
Cenozoic: humans and their ancestors