Question

Green patches in stagnant water are aquatic__________________.

Answer 1

Hint: Stagnant water is defined as standing water that has been trapped or has been left undisturbed for several hours or days. Standing or stagnant water is usually caused by a flood or a water leak. While these can be clean sources of standing water, other sources of standing water, such as flooding and sewage backups, can be contaminated.

Complete answer:
Algae are a diverse group of aquatic organisms that can perform photosynthesis. Most people are familiar with algae, such as seaweeds (such as kelp or phytoplankton), pond scum, and lake algal blooms. However, there is a vast and diverse world of algae that are not only beneficial to us but also necessary for our survival. Aquatic algae can be found in green patches in stagnant water.

The vast majority of algae live in aquatic environments (Current Biology, 2014). However, the term "aquatic" is almost incapable of capturing the diversity of these habitats. These organisms can grow in both freshwater lakes and saltwater oceans.

Algae generally live independently in their various growth forms (single cells, colonies, etc.), but they can also form symbiotic relationships with a wide range of non-photosynthetic organisms such as ciliates, sponges, mollusks, and fungi (as lichens). One advantage of such relationships is that they allow algae to expand their habitats' horizons.

Note: Algae, in general, can photosynthesis and produce their nourishment by using light energy from the sun and carbon dioxide to generate carbohydrates and oxygen. In other words, the majority of algae are autotrophs, or more precisely, photoautotrophs (reflecting their use of light energy to generate nutrients).