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BIO NMDCAT Biological Importance of Water
nmdcat.online June 27, 2026

The biological importance of the transparency of water to visible light is that it

A. Prevents the formation of reactive oxygen species in deep water
B. Allows for the heating of water to very high temperatures
C. Permits photosynthesis to occur in the photic zone of aquatic ecosystems
✓
D. Blocks harmful ultraviolet radiation from reaching the Earth's surface

📝 Explanation

Water is relatively transparent to wavelengths of visible light, the spectrum used for photosynthesis. This allows aquatic plants and phytoplankton to carry out photosynthesis in the upper layers (photic zone), forming the base of the aquatic food web.

📖 Additional Information

  • Prevents the formation of reactive oxygen species in deep water
  • Allows for the heating of water to very high temperatures
  • Permits photosynthesis to occur in the photic zone of aquatic ecosystems
  • Blocks harmful ultraviolet radiation from reaching the Earth's surface

Water is relatively transparent to wavelengths of visible light, the spectrum used for photosynthesis. This allows aquatic plants and phytoplankton to carry out photosynthesis in the upper layers (photic zone), forming the base of the aquatic food web.

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