EVERYDAY SCIENCE

Detailed explanation-1: -In the aphotic zone, sunlight is virtually absent, but there can be light production from organisms (bioluminescence). Sunlight is the primary source of energy for photosynthesis. Algae and vascular plants that live in the water must live close enough to the surface to receive sunlight.

Detailed explanation-2: -The aphotic zone exists in depths below 1, 000 meters. Sunlight does not penetrate to these depths and the zone is bathed in darkness.

Detailed explanation-3: -Noun. aphotic zone (plural aphotic zones) (oceanography) That part of the deep body of an ocean or lake that receives insufficient sunlight for photosynthesis to be possible.

Detailed explanation-4: -In this zone only a small amount of light penetrates the water. Plants do not grow here due to the insufficient amount of light. The darkness layer or Aphotic Zone is entirely dark meaning there is no light. About 90% of the ocean is in this layer.

Detailed explanation-5: -Temperature is nearly freezing and decreases with depth. Pressure is extremely high and increases with depth. Bioluminescence (light generated by living things) is the only light seen in this zone. The aphotic zone is divided into two parts-the bathyal zone and the abyssal zone.