Primary Productivity

Question 1

Biosphere

Answer 1

region of our planet where life resides, combination of all ecosystems on Earth.

Question 2

Producer

Answer 2

organism use energy of Sun to produce usable forms of energy. AKA Autotroph.

Question 3

Photosynthesis

Answer 3

process by which producers use solar energy to convert CO2 & water into glucose.

Question 4

Cellular respiration

Answer 4

process by which cells unlock the energy of chemical compounds.

Question 5

Aerobic respiration

Answer 5

process by which cells convert glucose & oxygen into energy, CO2, & water (in presence of oxygen)

Question 6

Anaerobic respiration

Answer 6

process cells convert glucose into energy in the absence of oxygen.

Question 7

Gross primary productivity (GPP)

Answer 7

total amount of solar energy that producers in an ecosystem capture via photosynthesis over a given amount of time.

Question 8

Net Primary Productivity

Answer 8

energy captured by producers in an ecosystem minus the energy producers respire.

Question 9

How deep can different wavelengths of light penetrate? How has this affected photosynthesis and organisms?

Answer 9

Most red light - absorbed in the upper 1m of water, & blue light only penetrates deeper than 100m in the clearest water. This affects photosynthesis in aquatic ecosystems, whose photosynthesizers have adapted mechanisms to address the lack of visible light. (chemosynthesis)