Photosynthesis：练习题

Which of the following best describes the process of photosynthesis?

Which group of marine organisms primarily performs photosynthesis?

A marine scientist observes a decrease in the biomass of phytoplankton in a specific coastal area. Which of the following environmental changes would most likely explain this observation?

Which substance is produced and subsequently released as a vital by-product during photosynthesis in marine producers?

Certain marine protoctists, such as diatoms and dinoflagellates, are vital primary producers. What cellular component enables them to carry out this role?

What is the primary function of chlorophyll in photosynthetic organisms?

Explain why a local upwelling event in a coastal marine ecosystem typically leads to a significant increase in the productivity of primary producers.

A student investigates the effect of light intensity on the rate of photosynthesis in a macroalga. Explain why controlling other environmental factors is crucial for obtaining valid results.

Describe the process of photosynthesis, highlighting its significance as the foundation of marine food webs.

(a) State the word equation for photosynthesis.
(b) Explain why microscopic phytoplankton are considered crucial primary producers in the open ocean and discuss their contribution to the global oxygen supply.