Photic Zone
Definition
The photic zone refers to the upper layer of a body of water where sunlight can penetrate sufficiently for photosynthesis to occur. It is characterized by high levels of light availability.
Related terms
Aphotic Zone: The deeper layer in a body of water where little or no sunlight penetrates, making it impossible for photosynthesis to occur.
Phytoplankton: Microscopic plant-like organisms that float near the surface in the photic zone and form the base of many aquatic food chains.
Light Intensity: The amount or strength of light present in a particular area within the photic zone.
"Photic Zone" appears in:
Study guides (2)
AP Environmental Science - 1.3 Aquatic Biomes
AP Environmental Science - 9.5 Global Climate Change
Are you a college student?
Study guides for the entire semester
200k practice questions
Glossary of 50k key terms - memorize important vocab
About Us
About Fiveable
Blog
Careers
Code of Conduct
Terms of Use
Privacy Policy
CCPA Privacy Policy
Resources
Cram Mode
AP Score Calculators
Study Guides
Practice Quizzes
Glossary
Cram Events
Merch Shop
Crisis Text Line
Help Center
Stay Connected
© 2024 Fiveable Inc. All rights reserved.
AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.
About Us
About Fiveable
Blog
Careers
Code of Conduct
Terms of Use
Privacy Policy
CCPA Privacy Policy
Resources
Cram Mode
AP Score Calculators
Study Guides
Practice Quizzes
Glossary
Cram Events
Merch Shop
Crisis Text Line
Help Center
© 2024 Fiveable Inc. All rights reserved.
AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.