Algae examples

Algae are organisms, or living things, that are found all over the world. Algae are very important because they make much of Earth’s oxygen, which humans and other animals need to breathe. Some algae, such as seaweed, look like plants. However, algae are actually neither plants nor animals. Instead they belong to a group of living things called There are about 27,000 different species, or types, of algae. They are most common in water, such as oceans, rivers, lakes, streams, ponds, and marshes. Some species live in soil or on leaves, wood, and stones. Algae even grow on animals such as turtles and polar bears. Algae can be green, blue, red, or brown. They vary greatly in size. Some species are so small that they can only be seen through a microscope. On the other hand, the algae called kelp can reach 200 feet (60 meters) in length. Algae differ from plants in several ways. They do not have stems or leaves, and their roots are different from plant roots. Algae also do not produce flowers or seeds, as plants do. Like plants, however, algae make their own food through a process called In addition to making oxygen, algae are important for other reasons. Water animals such as whales, seals, fish, octopuses, and starfish depend on algae for food. People also eat some types of algae. In many parts of the world farmers use seaweeds as fertilizer (a material to help crops grow). • The same safe and trusted content for explorers of all ages. • Accessible across all of today's device...

Examinations • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Green Algae Algae are a group of aquatic organisms capable of photosynthesizing. For most people, some algae are familiar; for example, seaweeds (phytoplankton or kelp), lake algal blooms or pond scum. There is, moreover, a vast and varied algae universe that is not only useful to us but vital to our life. Table of Content: • • The term “algae” encompasses numerous organisms able to produce oxygen via photosynthesis (generation of carbohydrates by extracting light energy from the sun). We are not even closely related to these species. Nevertheless, they are joined by certain traits, thus separating them from the other larger group of photosynthetic entities: ground plants. Algae lack real leaves, roots, and stems, and a vascular system for the flow of nutrients and water throughout the body. According to an article issued in 2014 in the journal Current Biology, most algae are unicellular. These often take place in a variety of shapes and sizes. They may exist as microscopic cells and single, they may be multicellular and macroscopic; they may inhabit colonies; or they may have a leafy appearance, as with seaweeds like giant kelp. Picoplankton may vary from 0...

Microbiology. any of numerous groups of chlorophyll-containing, mainly aquatic, eukaryotic organisms ranging from microscopic single-celled forms to multicellular forms 100 feet (30 meters) or more long, distinguished from plants by the absence of true roots, stems, and leaves and by a lack of nonreproductive cells in the reproductive structures: classified into the six phyla Euglenophyta, Crysophyta, Pyrrophyta, Chlorophyta, Phaeophyta, and Rhodophyta.

Seaweed is the common name for marine algae. Even though they may look like underwater plants—in some cases, growing in excess of more than 150 feet in length—seaweeds are not plants at all. Instead, marine algae are a group of species from the Protista kingdom that fall into three distinct groups: • Brown Algae ( Phaeophyta) • Green Algae ( Chlorophyta) • Red Algae ( Rhodophyta) Although algae are not plants, they do share some basic characteristics with them. Like plants, marine algae use chlorophyll for photosynthesis. Seaweeds also have plant-like cell walls. However, unlike plants, seaweeds have no root or internal vascular systems, nor do they produce seeds or flowers, both of which are required to be classified as plants. Darrell Gulin / Getty Images Brown algae, from the phylum Phaeophyta (meaning "dusky plants"), is the most prevalent type of seaweed. Brown or yellow-brown in color, brown algae are found in the waters of both temperate or arctic climates. While not roots in the true sense, brown algae typically have root-like structures called "holdfasts" that are used to anchor the algae to a surface. Seaweeds can thrive in both salt and freshwater, but the brown algae known as One of the most widely consumed seaweeds, kelp contains many important vitamins and minerals including vitamin K, vitamin A, vitamin C, folate, vitamin E, vitamin B12, vitamin B6, thiamin, riboflavin, niacin, pantothenic acid, iodine, calcium, magnesium, iron, sodium, phosphorus, as well a...

Pond scum, seaweed, and giant kelp are all examples of algae. Algae are Algae can reproduce sexually, asexually or by a combination of both processes through Algae can be categorized into seven major types, each with distinct sizes, functions, and color. The different divisions include: • Euglenophyta (Euglenoids) • Chrysophyta (Golden-brown algae and Diatoms) • Pyrrophyta (Fire algae) • Chlorophyta (Green algae) • Rhodophyta (Red algae) • Paeophyta (Brown algae) • Xanthophyta (Yellow-green algae) Euglena gracilis / Algae. Roland Birke/Photolibrary/Getty Images Euglena are fresh and salt water protists. Like plant cells, some euglenoids are autotrophic. They contain chloroplasts and are capable of photosynthesis. They lack a Due to their photosynthetic capabilities, Euglena were classified along with algae in the phylum Euglenophyta. Scientists now believe that these organisms have acquired this ability due to endosymbiotic relationships with photosynthetic green algae. As such, some scientists contend that Euglena should not be classified as algae and be classified in the phylum Euglenozoa. Diatoms. Malcolm Park/Oxford Scientific/Getty Images Golden-brown algae and diatoms are the most abundant types of unicellular algae, accounting for around 100,000 different species. Both are found in fresh and salt water environments. Diatoms are much more common than golden-brown algae and consist of many types of plankton found in the ocean. Instead of a cell wall, diatoms are encas...

blue-green algae, also called cyanobacteria, any of a large, Like all other prokaryotes, cyanobacteria lack a membrane-bound nucleus, mitochondria, Cyanobacteria contain only one form of a, a green pigment. In addition, they contain various yellowish carotenoids, the blue pigment Most cyanobacteria do not grow in the absence of light ( i.e., they are obligate phototrophs); however, some can grow in the dark if there is a sufficient supply of glucose to act as a carbon and energy source. In addition to being photosynthetic, many species of cyanobacteria can also “fix” atmospheric heterocysts. The heterocysts are thick-walled Cyanobacteria range in size from 0.5 to 60 micrometres, which represents the largest prokaryotic organism. They are widely distributed and are extremely common in fresh Cyanobacteria reproduce asexually, either by means of binary or multiple fission in unicellular and colonial forms or by fragmentation and spore formation in filamentous species. Under favourable conditions, cyanobacteria can reproduce at explosive rates, forming dense concentrations called blooms. Cyanobacteria blooms can colour a body of water. For example, many ponds take on an This article was most recently revised and updated by

Pond scum, seaweed, and giant kelp are all examples of algae. Algae are Algae can reproduce sexually, asexually or by a combination of both processes through Algae can be categorized into seven major types, each with distinct sizes, functions, and color. The different divisions include: • Euglenophyta (Euglenoids) • Chrysophyta (Golden-brown algae and Diatoms) • Pyrrophyta (Fire algae) • Chlorophyta (Green algae) • Rhodophyta (Red algae) • Paeophyta (Brown algae) • Xanthophyta (Yellow-green algae) Euglena gracilis / Algae. Roland Birke/Photolibrary/Getty Images Euglena are fresh and salt water protists. Like plant cells, some euglenoids are autotrophic. They contain chloroplasts and are capable of photosynthesis. They lack a Due to their photosynthetic capabilities, Euglena were classified along with algae in the phylum Euglenophyta. Scientists now believe that these organisms have acquired this ability due to endosymbiotic relationships with photosynthetic green algae. As such, some scientists contend that Euglena should not be classified as algae and be classified in the phylum Euglenozoa. Diatoms. Malcolm Park/Oxford Scientific/Getty Images Golden-brown algae and diatoms are the most abundant types of unicellular algae, accounting for around 100,000 different species. Both are found in fresh and salt water environments. Diatoms are much more common than golden-brown algae and consist of many types of plankton found in the ocean. Instead of a cell wall, diatoms are encas...

Microbiology. any of numerous groups of chlorophyll-containing, mainly aquatic, eukaryotic organisms ranging from microscopic single-celled forms to multicellular forms 100 feet (30 meters) or more long, distinguished from plants by the absence of true roots, stems, and leaves and by a lack of nonreproductive cells in the reproductive structures: classified into the six phyla Euglenophyta, Crysophyta, Pyrrophyta, Chlorophyta, Phaeophyta, and Rhodophyta.

blue-green algae, also called cyanobacteria, any of a large, Like all other prokaryotes, cyanobacteria lack a membrane-bound nucleus, mitochondria, Cyanobacteria contain only one form of a, a green pigment. In addition, they contain various yellowish carotenoids, the blue pigment Most cyanobacteria do not grow in the absence of light ( i.e., they are obligate phototrophs); however, some can grow in the dark if there is a sufficient supply of glucose to act as a carbon and energy source. In addition to being photosynthetic, many species of cyanobacteria can also “fix” atmospheric heterocysts. The heterocysts are thick-walled Cyanobacteria range in size from 0.5 to 60 micrometres, which represents the largest prokaryotic organism. They are widely distributed and are extremely common in fresh Cyanobacteria reproduce asexually, either by means of binary or multiple fission in unicellular and colonial forms or by fragmentation and spore formation in filamentous species. Under favourable conditions, cyanobacteria can reproduce at explosive rates, forming dense concentrations called blooms. Cyanobacteria blooms can colour a body of water. For example, many ponds take on an This article was most recently revised and updated by

Examinations • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Green Algae Algae are a group of aquatic organisms capable of photosynthesizing. For most people, some algae are familiar; for example, seaweeds (phytoplankton or kelp), lake algal blooms or pond scum. There is, moreover, a vast and varied algae universe that is not only useful to us but vital to our life. Table of Content: • • The term “algae” encompasses numerous organisms able to produce oxygen via photosynthesis (generation of carbohydrates by extracting light energy from the sun). We are not even closely related to these species. Nevertheless, they are joined by certain traits, thus separating them from the other larger group of photosynthetic entities: ground plants. Algae lack real leaves, roots, and stems, and a vascular system for the flow of nutrients and water throughout the body. According to an article issued in 2014 in the journal Current Biology, most algae are unicellular. These often take place in a variety of shapes and sizes. They may exist as microscopic cells and single, they may be multicellular and macroscopic; they may inhabit colonies; or they may have a leafy appearance, as with seaweeds like giant kelp. Picoplankton may vary from 0...