Which of the Following Environmental Factors Probably Helped Early Plants

question 30

Multiple Choice

Which of the following environmental factors probably helped early plants to successfully colonise land?

• A) a decreased availability of CO₂
• B) relatively few competitors for light
• C) an increased availability of symbiotic partners
• D) air's relative lack of support, compared to water's support

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Definitions:

Inner Mitochondrial Membrane

The membrane inside mitochondria that is the site of the electron transport chain and ATP (adenosine triphosphate) production.

Electron Transport Chain

A series of complexes that transfer electrons from electron donors to electron acceptors via redox reactions, coupled with the transfer of protons across a membrane to generate ATP.

ATP Formation

The biochemical process by which cells generate adenosine triphosphate (ATP), a molecule that stores and transfers energy within cells.

Acetate

A salt or ester of acetic acid, often used as a solvent or in making synthetic fibers or plastics.