ASVAB (Armed Services Vocational Aptitude Battery)General Science (GS)Easy

Which of the following is the primary product of photosynthesis?

  1. AWater
  2. BCarbon Dioxide
  3. COxygen
  4. DGlucose
Show answer & explanation

Correct answer: D. Glucose

Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll. The primary products of this process are glucose (a sugar) and oxygen.

Why the other options are wrong

  • A. Water is a reactant, not a primary product, providing electrons and protons.
  • B. Carbon dioxide is a reactant, not a primary product, used to build glucose.
  • C. Oxygen is a byproduct, released into the atmosphere, not the primary energy storage molecule.

Photosynthesis

The process used by plants, algae, and cyanobacteria to convert light energy into chemical energy, stored in organic compounds like glucose.

  • Uses sunlight, water, and carbon dioxide.
  • Produces glucose and oxygen.
  • Occurs primarily in chloroplasts.

Memory trick: Plants make sweet treats and fresh air with sun.

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