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WorksheetsHistory of Life on Earth
Total questions: 11
Worksheet time: 25mins
Which of the following best describes the first organisms on Earth?
photosynthetic
eukaryotic
multicellular
prokaryotic
Order the following based on when the event occurred in Earth's history.
First life on Earth
Oxygen accumulation in atmosphere
First plants evolved
K-T Extinction killed off most dinosaur species
Evolution of modern humans
The Earth is (a) billion years old.
Choose all of the following that describe early Earth conditions (over 3 billion years ago).
intense storms
oxygen-rich atmosphere
asteroid bombardment
high biodiversity
presence of organic molecules
One of the accepted scientific theories describing the origin of life on Earth is known as chemical evolution. According to this theory, which of the following events would need to occur first for life to evolve?
onset of photosynthesis
origin of genetic material
Synthesis of organic molecules
formation of the plasma membrane
Which of the following is true about mass extinction events?
They happen rapidly (less than 100 years)
They cause die off of all organisms
They are marked by significant changes in the biosphere
They have all been caused by increase of atmospheric temperature
Following (a) that cause the extinction of over (b) of species in a geologically rapid time period, (c) occurs, causing new species to (d) because of a new set of (e)
How many grams are left after 1 half life?
