EVERYDAY SCIENCE

Detailed explanation-1: -In the presence of sunlight, these produce oxygen through photosynthesis and release this oxygen into the pond water. At night and on very cloudy days, algae and submerged plants remove oxygen from the water for respiration.

Detailed explanation-2: -Dissolved-oxygen gas is released as a by-product. In aquatic environments, free-floating microscopic plants known as algae, and larger submersed plants (macrophytes), release oxygen directly into the water where it is used by animals and other organisms, including the plants themselves.

Detailed explanation-3: -Aquatic Plants and Photosynthesis Plants, including aquatic plants, produce oxygen, and they also use oxygen. Here’s how these processes work: During a sunny day, dissolved oxygen in water is generally plentiful because photosynthesizing algae and aquatic plants are constantly releasing it into the water.

Detailed explanation-4: -During the day, aquatic plants absorb CO2, producing O2, and during the night they absorb O2 and produce CO2.

Detailed explanation-5: -Plants do require oxygen to respire, the process in return gives out carbon dioxide.