What does algae mean?

Definitions for algae
ˈæl dʒial·gae

This dictionary definitions page includes all the possible meanings, example usage and translations of the word algae.

Princeton's WordNet

  1. alga, algaenoun

    primitive chlorophyll-containing mainly aquatic eukaryotic organisms lacking true stems and roots and leaves

Wiktionary

  1. algaenoun

    Plural form of alga.

Wikipedia

  1. Algae

    Algae (; singular alga ) is an informal term for a large and diverse group of photosynthetic eukaryotic organisms. It is a polyphyletic grouping that includes species from multiple distinct clades. Included organisms range from unicellular microalgae, such as Chlorella, Prototheca and the diatoms, to multicellular forms, such as the giant kelp, a large brown alga which may grow up to 50 metres (160 ft) in length. Most are aquatic and autotrophic (they generate food internally) 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 marine algae are called seaweeds, while the most complex freshwater forms are the Charophyta, a division of green algae which includes, for example, Spirogyra and stoneworts. No definition of algae is generally accepted. One definition is that algae "have chlorophyll a as their primary photosynthetic pigment and lack a sterile covering of cells around their reproductive cells". Likewise, the colorless Prototheca under Chlorophyta are all devoid of any chlorophyll. Although cyanobacteria are often referred to as "blue-green algae", most authorities exclude all prokaryotes from the definition of algae.Algae constitute a polyphyletic group since they do not include a common ancestor, and although their plastids seem to have a single origin, from cyanobacteria, they were acquired in different ways. Green algae are examples of algae that have primary chloroplasts derived from endosymbiotic cyanobacteria. Diatoms and brown algae are examples of algae with secondary chloroplasts derived from an endosymbiotic red alga. Algae exhibit a wide range of reproductive strategies, from simple asexual cell division to complex forms of sexual reproduction.Algae lack the various structures that characterize land plants, such as the phyllids (leaf-like structures) of bryophytes, rhizoids of non-vascular plants, and the roots, leaves, and other organs found in tracheophytes (vascular plants). Most are phototrophic, although some are mixotrophic, deriving energy both from photosynthesis and uptake of organic carbon either by osmotrophy, myzotrophy, or phagotrophy. Some unicellular species of green algae, many golden algae, euglenids, dinoflagellates, and other algae have become heterotrophs (also called colorless or apochlorotic algae), sometimes parasitic, relying entirely on external energy sources and have limited or no photosynthetic apparatus. Some other heterotrophic organisms, such as the apicomplexans, are also derived from cells whose ancestors possessed plastids, but are not traditionally considered as algae. Algae have photosynthetic machinery ultimately derived from cyanobacteria that produce oxygen as a by-product of photosynthesis, unlike other photosynthetic bacteria such as purple and green sulfur bacteria. Fossilized filamentous algae from the Vindhya basin have been dated back to 1.6 to 1.7 billion years ago.Because of the wide range of types of algae, they have increasing different industrial and traditional applications in human society. Traditional seaweed farming practices have existed for thousands of years and have strong traditions in East Asia food cultures. More modern algaculture applications extend the food traditions for other applications include cattle feed, using algae for bioremediation or pollution control, transforming sunlight into algae fuels or other chemicals used in industrial processes, and in medical and scientific applications. A 2020 review found that these applications of algae could play an important role in carbon sequestration in order to mitigate climate change while providing valuable value-add products for global economies.

ChatGPT

  1. algae

    Algae is a diverse group of aquatic organisms that have the ability to conduct photosynthesis. They range from single-celled organisms to large multicellular forms, like seaweed. Though they lack roots, stems, and leaves, they contain chlorophyll, which gives them their green color and enables them to convert sunlight into energy. Algae plays a significant role in the ecosystem by producing oxygen and serving as a food source for various marine species. They are found in various habitats, including freshwater and marine environments.

Webster Dictionary

  1. Algae

    of Alga

Wikidata

  1. Algae

    Algae are a very large and diverse group of simple, typically autotrophic organisms, ranging from unicellular to multicellular forms, such as the giant kelps that grow to 65 meters in length. Most are photosynthetic and "simple" because they lack the many distinct cell and organ types found in land plants. The largest and most complex marine forms are called seaweeds. Though the prokaryotic cyanobacteria are informally referred to as blue-green algae, this usage is incorrect since they are regarded as bacteria. The term algae is now restricted to eukaryotic organisms. All true algae therefore have a nucleus enclosed within a membrane and plastids bound in one or more membranes. Algae constitute a polyphyletic group since they do not include a common ancestor, although their plastids seem to have a single origin. Diatoms are also examples of algae. Algae exhibit a wide range of reproductive strategies, from simple, asexual cell division to complex forms of sexual reproduction. Algae lack the various structures that characterize land plants, such as the leaf-like phyllids of bryophytes, rhizoids in nonvascular plants, and the roots, leaves, and other organs that are found in tracheophytes. Many are phototrophic, although some groups contain members that are mixotrophic, deriving energy both from photosynthesis and uptake of organic carbon either by osmotrophy, myzotrophy, or phagotrophy. Some unicellular species rely entirely on external energy sources and have limited or no photosynthetic apparatus.

U.S. National Library of Medicine

  1. Algae

    A major group of polyphyletic organisms of extremely varied morphology and physiology, mostly photosynthetic, but distinguished from plants by their complex form of sexual reproduction. They are freshwater and marine, terrestrial and subterranean; some are neustonic (living at the interface of water and the atmosphere). They live in various protozoa and within other plants. They live also in soil and on soil surfaces, on long-persistent snows, and in Antarctic rocks. Thermophilic algae inhabit hot springs. (From Webster, 3d ed; from Bold & Wynne, Introduction to the Algae, 2d ed, pp1-6)

Matched Categories

How to pronounce algae?

How to say algae in sign language?

Numerology

  1. Chaldean Numerology

    The numerical value of algae in Chaldean Numerology is: 4

  2. Pythagorean Numerology

    The numerical value of algae in Pythagorean Numerology is: 8

Examples of algae in a Sentence

  1. Kelly Taylor:

    We are kind of speculating that perhaps it was washed out during one of the flooding events in Louisiana, it had a significant amount of algae on it's back that leads us to speculate that it was floating in the Gulf for a while.

  2. Thomas Brueck:

    To substitute 100 percent of the kerosene use today, we will not do it with algae alone. We need a combination of different technologies to actually enable that substitution.

  3. Andrew Retzler:

    The breccia looks like a solid rock, but it's made up of a bunch of chunks of other rocks. There are a ton of fossils in it, different kinds of sponges and brachiopods and also some algae, once you get a sense of how it weathers, your eye gets drawn to it in the mountain ranges.

  4. Matthew Nelsen:

    When you see a lichen, you're basically looking at all fungal tissue, with some algal cells hidden away and protected inside, loosely speaking, it's like a greenhouse -- the fungus creates a more hospitable environment for the algae.

  5. Jordan Robin:

    The video shows me moving my hand through the water causing the algae to glow a very bright blue.

Popularity rank by frequency of use

algae#10000#17192#100000

Translations for algae

From our Multilingual Translation Dictionary

Get even more translations for algae »

Translation

Find a translation for the algae definition in other languages:

Select another language:

  • - Select -
  • 简体中文 (Chinese - Simplified)
  • 繁體中文 (Chinese - Traditional)
  • Español (Spanish)
  • Esperanto (Esperanto)
  • 日本語 (Japanese)
  • Português (Portuguese)
  • Deutsch (German)
  • العربية (Arabic)
  • Français (French)
  • Русский (Russian)
  • ಕನ್ನಡ (Kannada)
  • 한국어 (Korean)
  • עברית (Hebrew)
  • Gaeilge (Irish)
  • Українська (Ukrainian)
  • اردو (Urdu)
  • Magyar (Hungarian)
  • मानक हिन्दी (Hindi)
  • Indonesia (Indonesian)
  • Italiano (Italian)
  • தமிழ் (Tamil)
  • Türkçe (Turkish)
  • తెలుగు (Telugu)
  • ภาษาไทย (Thai)
  • Tiếng Việt (Vietnamese)
  • Čeština (Czech)
  • Polski (Polish)
  • Bahasa Indonesia (Indonesian)
  • Românește (Romanian)
  • Nederlands (Dutch)
  • Ελληνικά (Greek)
  • Latinum (Latin)
  • Svenska (Swedish)
  • Dansk (Danish)
  • Suomi (Finnish)
  • فارسی (Persian)
  • ייִדיש (Yiddish)
  • հայերեն (Armenian)
  • Norsk (Norwegian)
  • English (English)

Word of the Day

Would you like us to send you a FREE new word definition delivered to your inbox daily?

Please enter your email address:


Citation

Use the citation below to add this definition to your bibliography:

Style:MLAChicagoAPA

"algae." Definitions.net. STANDS4 LLC, 2024. Web. 17 Jun 2024. <https://www.definitions.net/definition/algae>.

Discuss these algae definitions with the community:

0 Comments

    Are we missing a good definition for algae? Don't keep it to yourself...

    Image or illustration of

    algae

    Credit »

    Free, no signup required:

    Add to Chrome

    Get instant definitions for any word that hits you anywhere on the web!

    Free, no signup required:

    Add to Firefox

    Get instant definitions for any word that hits you anywhere on the web!

    Browse Definitions.net

    Quiz

    Are you a words master?

    »
    take away to an undisclosed location against their will and usually in order to extract a ransom
    A render
    B abash
    C abase
    D abduct

    Nearby & related entries:

    Alternative searches for algae: