Life on Land Quick Check
1 of 31 of 3 Items
Question
Select the correct answer from the list.(1 point)
Increased levels of oxygen in the atmosphere due to photosynthesis caused rates of weathering to
, which aided in the formation of
.
Increased levels of oxygen in the atmosphere due to photosynthesis caused rates of weathering to increase, which aided in the formation of soil.
Life on Land Quick Check
2 of 32 of 3 Items
Question
Select the 2 correct statements that describe cyanobacteria.(1 point)
Responses
Cyanobacteria have complex cells containing a nucleus
Cyanobacteria have complex cells containing a nucleus
Cyanobacteria were the first photosynthesizing organisms
Cyanobacteria were the first photosynthesizing organisms
Cyanobacteria lived in the ocean
Cyanobacteria lived in the ocean
Cyanobacteria decreased the levels of oxygen in the atmosphere
Cyanobacteria decreased the levels of oxygen in the atmosphere
The two correct statements that describe cyanobacteria are:
1. Cyanobacteria were the first photosynthesizing organisms.
2. Cyanobacteria lived in the ocean.
Life on Land Quick Check
3 of 33 of 3 Items
Question
Which of the following factors made the land a place where the first land plants could thrive? Select the two correct answers.(1 point)
Responses
new, nutrient-rich soil made of cyanobacteria and deteriorating rock
new, nutrient-rich soil made of cyanobacteria and deteriorating rock
evolution of animals
evolution of animals
abundant sunlight for photosynthesis
abundant sunlight for photosynthesis
low levels of oxygen in the atmosphere
The correct answers are:
1. New, nutrient-rich soil made of cyanobacteria and deteriorating rock.
2. Abundant sunlight for photosynthesis.