Some forms, however, are chemoheterotrophic and obtain energy from chemical reactions and nutrients from preformed organic matter. Recent developments in science and technology have enabled algae to be used as a source of fuel. Other pigments that provide green colouration (such as chlorophyll a) are present. I need some material work on bsc 1st year for botany, But this app is really helpful and provides whole information from top to bottom and also provides short questions which is very important to a child attending lecture But let's discover more about the characteristics and uses of this healthy micro-algae. Fungi are eukaryotic, spore bearing, achlorophyllous, heterotrophic organisms that generally reproduce sexually and asexually and whose filamentous, branched somatic structures are typically surrounded by cell walls containing chitin or cellulose or both with many … Algae are the simplest multicellular plants. Often, it is characterized by discolouration of the water and a peculiar odour. Algae are primarily classified into the following types: Algae are neither bacteria nor plant. But they do not have embryo forming stage. Brown Algae have about 1500 species and most of it is a marine brown-colored algae which is commonly known as seaweeds. Some of them are used as food. Nostoc, Anabaena, etc. Some algae have flagella and swim through the water. According to the records, there are more than 50,000’s known species of Algae and based on their habitat, presence of biological pigments and other characteristics they are classified into seven different types. Algae form the primary source of food for many organisms in the food chain. They are Thallophytes which have chlorophyll as their primary photosynthetic pigment and lack a sterile covering of cells around the reproductive cells. “Alga is a term that describes a large and incredibly diverse group of eukaryotic, photosynthetic lifeforms. Phycology is the branch in botany which deals with the study of algae. General Characteristics of Algae . These include dams, rivers, reservoirs, creeks, lakes and oceans. - Algae life cycles are complex, involving as many as three generations. However, that is where the differences end as algae lack many structural components typically present in plants, such as true stems, shoots, and leaves. Most algae require a moist or watery environment; hence, they are ubiquitous near or inside water bodies. Shilapushpa or Lichens are simplest form of plants consisting of a very intimate association of a fungus (the mycobiont) with a photosynthetic partner (the photobiont), usually either a green algae or cyanobacterium.The intimate association of these two microorganisms results in the formation of a macro-organism, i.e. General Characteristics of Algae. Listed below are some of the general characteristics of algae. They are photosynthetic microorganisms. Discuss types of reproduction,types of sexual reproduction :isogamous, anisogamous and oogamous with examples, discuss uses of algae as food and in making commercial products.Discuss common name, pigment, stored food, cell wall, number of flagella, habitat, … Read on to explore more about the types and characteristics of algae in the algae notes provided below. Chlorophyll and other pigments are found in … CliffsNotes study guides are written by real teachers and professors, so no matter what you're studying, CliffsNotes can ease your homework headaches and help you score high on exams. Algae can be multicellular or unicellular. They occur both in marine and fresh water habitats. Learn vocabulary, terms, and more with flashcards, games, and other study tools.-can reproduce ASEXUALLY:-Multicellular algae w/ thalli & filamentous forms can Algae are photoautotrophs. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Some of them lack different cell and tissue types Their body contains Chlorophyll and photosynthetic pigments which help to perform Photosynthesis. Algae exist in environments ranging from oceans, rivers, and lakes to ponds, brackish waters and even snow. Algae Introduction: The study of algae known as Phycology. Occurrence of Algae: They mainly dwell in aquatic environments The algae … Algae Characteristics. Furthermore, they also do not have vascular tissues to circulate essential nutrients and water throughout their body. Multicellular examples of algae include the giant kelp and brown algae. In the Plankton Unicellular Algae are found enormously. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features 2. All rights reserved. So its a important as well as useful app, Your email address will not be published. The cell of an alga has eukaryotic properties, and some species have flagella with the “9‐plus‐2” pattern of microtubules. The pigments phycocyanin and phycoerythrin are responsible for the characteristic red colouration of the algae. The term algae is used to describe a large collection of photosynthetic, eukaryotic organisms. Characteristics of Algae: 1. Algae have simple, unicellular non-jacketed sex organs and have no embryo development. Moreover, some can act as the indicators of environmental health, signalling the extent of pollution. Reproduction in algae occurs in both asexual and sexual forms. It is similar to the other biofuels made from corn and sugar-cane. Unicellular algae occur most frequently in water, especially in plankton. Being photosynthetic, they increase the oxygen content of their environment. Many commercial products are obtained from algae such as align, etc. Your email address will not be published. There are about 35000 species of algae.They include planktons, pond scums, stone worts, sea weeds, sea lettuce etc. General Protista Characteristics The kingdom Protista includes highly diverse organisms with a wide variety of characteristics. Start studying Unit 8-Lesson 5- Characteristics of Algae. However, certain species of algae can form algal blooms, which can have detrimental effects on human health and the environment. Unicellular algae occur most frequently in water, especially in plankton. Some of the algae are also found as terrestrial, subterranean or epiphytic forms. Spore formation takes place by mitosis. They are cosmopolitan in distribution. According to the Whittaker scheme, algae are classified in seven divisions, of which five are considered to be in the Protista kingdom and two in the Plantae kingdom. An undifferentiated plant body is known as ‘thallus’. Listed below are some of the general characteristics of algae. These flagellates range from single cells, such as Ochromonas, to colonial organisms with thousands of cells, such as Volvox. CHLOROPHYCEAE: GREEN ALGAE About 90% of the total species grow in fresh water habitats and 10% are marine. © 2020 Houghton Mifflin Harcourt. Nostoc, Anabaena, etc. Keshav Narayan Pai Msc I Department of Botany 2. SHILAPUSHPA - LICHENS: GENERAL CHARACTERISTICS. Anatomically, they are similar to another major group of photosynthetic organisms – the land plants. Some are unicellular eg. • The plant body is called as Thallus and they are avascular (lack vascular tissues) • Algae can be multicellular (Eg giant kelp) or unicellular. Algae is a large, diverse group of eukaryotic, photosynthetic organisms that are not necessarily related to each other. Algae is a group of chlorophyll containing thalloid plants which bear unicellular or multicellular sex organs and the sex organs are NOT protected in the sterile jacket cells. Algal cells have a double-membrane bound nucleus, mitochondria, vacuoles, chloroplastids, Golgi bodies, endoplasmic reticulum and 80S ribosomes. Binary fission also takes place (as in bacteria). Unlike traditional plants, algae do not have true roots, stems and leaves. Vaucheria, genus of yellow-green algae (family Vaucheriaceae), found nearly worldwide. The chlorophyll and other pigments occur in, During sexual reproduction, algae form differentiated sex cells that fuse to produce a diploid, Introduction to Controlling Microbial Growth, Antibody‐Mediated (Humoral) Immunity (AMI), Detecting Antibodies with Laboratory Tests, Bacterial Diseases of the Cardiovascular and Lymphatic Systems, Viral Diseases of the Cardiovascular and Lymphatic Systems, Fungal and Protozoal Diseases of the Respiratory System, Bacterial Diseases of the Respiratory System, Protozoal Diseases of the Digestive System, Parasitic Diseases of the Digestive System, Bacterial Diseases of the Digestive System, Fungal and Protozoal Diseases of the Reproductive System, Bacterial Diseases of the Reproductive System, Viral Diseases of the Reproductive System. General Characteristics of Brown Algae Habitat- Brown algae are mostly marine. General Characteristics of Algae. Water bodies kingdom Protista contains some of the algae notes as in fungi ). ” organ! 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