Most algae are aquatic organisms and lack many of the distinct cell and tissue types, such as stomata, xylem, and phloem that are found in land plants. The largest and most complex …

: any plant or plantlike organism (as a seaweed) that includes forms mostly growing in water, lacking a system of vessels for carrying fluids, and often having chlorophyll masked by brown …

Oct 29, 2025 · Algae are eukaryotic organisms and contain three types of double-membrane-bound organelles: the nucleus, the chloroplast, and the mitochondrion. In most algal cells, …

Jun 5, 2025 · The excessive algal growth, or algal bloom, becomes visible to the naked eye and can be green, blue-green, red, or brown, depending on the type of algae. Some blooms are …

Jan 9, 2024 · Harmful algal blooms are the rapid growth of algae or cyanobacteria in water that can harm people, animals, or the environment. Going in or near water with a harmful algal …

Sep 11, 2024 · Algae are primarily aquatic, photosynthetic organisms that are often simple in structure and range from unicellular microalgae, like diatoms, to multicellular forms, such as …

Define algal. algal synonyms, algal pronunciation, algal translation, English dictionary definition of algal. n. pl. al·gae Any of numerous photosynthetic organisms of aquatic or moist habitats, …

Nov 7, 2023 · Algae are simple, typically aquatic photosynthetic organisms, ranging from single-celled forms to large seaweeds. Algal, on the other hand, is an adjective used to describe …

Jul 23, 2025 · Algae are diverse group of photosynthetic life forms, that includes a wide range of eukaryotic organisms, including both multicellular organisms, for examples giant kelp and …

Algae are photosynthetic organisms that occur in most habitats, ranging from marine and freshwater to desert sands and from hot boiling springs to snow and ice.