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Reproduction in algae SlideShare

Algae - SlideShar

  1. Green Algae - ReproductionVegetative reproduction occurs by cell division, fragmentationand stolon formationAsexual reproduction occurs by the formation of akinites,zoospores or aplanosporesSexual reproduction involves isogamy or anisogamy or oogamy.Zygote is the only diploid structure in the life cycle
  2. Aquatic algae • Also called as hydrophilous algae • Submerged or free - floating • Living in fresh waters - ponds, rivers, springs etc. • Some in salt water - seas and oceans • Still waters - ponds, pools etc Eg: Zygnema, Oedogonium etc. • Running water - Eg: Vaucheria and Cladophora. 9. Types of aquatic algae i
  3. Algal Reproductive Types • Algae reproduce by both asexual and sexual methods. • Some algal species reproduce only asexually, but many reproduce by both sexual and asexual processes. a) Asexual Reproduction • Populations of many unicellular species increase by longitudinal and transverse cell division
  4. REPRODUCTION • Algae are capable of reproducing through asexual or vegetative methods and via sexual reproduction. • Asexual reproduction involves the production of a motile spore. • Vegetative methods include simple cell division (mitosis) to produce identical offspring and the fragmentation of a colony
  5. Characteristics Of Algae • Vary in size from nanoplankton (< 2 µm cyanobacteria ) to Giant kelps (> 70 m long). Possess a cell wall. • Contain pigments • chlorophylls a, and many often have another chlorophyll, like b, c, or d and accessory red, blue and brown photosynthetic pigments. 6
  6. us gametes  Zygospore 17

Reproduction in algae: Ø Algae reproduce by three methods: (1). Vegetative reproduction: Cell division, fission, fragmentation, Hormogonia, formation of adventitious branches, tubers, buddings etc. are the important vegetative reproduction methods in algae. (2). Asexual reproduction: By a variety of motile or non-motile spores. Zoospore, aplanospore, hypnospore, tetraspore, autospore. Algae: General Characters PPT (General Characteristics of Algae PPT) What are algae? General characteristics of algae, Classification of algae based on habitat, Thallus diversity in algae, Chloroplast shape variations in algae, Pigmentation in algae, Reproduction in algae, Life cycle in algae. Learn more: Lecture Note in Algae General. Reproduction in Bacillariophyta (With Diagram) In this article we will discuss about the reproduction in basillariophyta. This will also help you to draw the structure and diagram of reproduction in bacillariophyta. Diatom cells multiply usually by a peculiar method of cell division. An increase in the volume of the frustule results in a slight. Oedogonium is a form of filamentous green algae. It is capabable of reproducing asexually, which means that each oedogonium has both male and female reproductive organs. In asexual reproduction, the oedogonium fragments and produces zoospores Reproduction in Brown Algae Asexual reproduction is accomplished by either fragmentation or spores. When cells divide, centrioles are apparent in the mitotic figure. This is significant because it is not ordinarily seen in plant cells

This family comprises of algae whose plant body is characterized by unicellular multinucleate vesicular, globose or dichotomously branched aerial portion and a colourless rhizoidal portion. Asexual reproduction is by biflagellate zoospores, aplano­spores or resting spores and sexual reproduction is isogamous Plants and algae show alternation of generation. All the plants showing sexual reproduction alternate between two multicellular stages, viz. Algae - Algae - Reproduction and life histories: Algae regenerate by sexual reproduction, involving male and female gametes (sex cells), by asexual reproduction, or by both ways. KF678

The vegetative reproduction takes place in favourable season for vegetative growth. Majority of the Bryophytes propagate vegetatively and it is brought about in many ways. Some important methods of vegetative reproduction are as follows: 1. By death and decay of the older portion of the thallus or fragmentation. 2 Algae regenerate by sexual reproduction, involving male and female gametes (sex cells), by asexual reproduction, or by both ways The algae comprise of a large heterogeneous assemblage of plants which are diverse in habitat, size, organisation, physiology, biochemistry, and reproduction. It is an important group of Thallophyta (Gr. Thallos — a sprout; phyton — a plant), the primitive and simplest division of the plant kingdom Reproduction in Multicellular Algae Oedogonium reproduction Antheridium-release flagellated sperm that swim to the oogonium Oogonium-houses the zygote which is a diploid spore The spore undergoes meiosis and produces 4 haploid zoospores. One of the four cells becomes a rootlike holdfast the others divide and become a new filament. oogoniu TYPE: Pinnularia - occurance ,reproduction & division. Botany 1 Comment. Occurrence. Pinnularia is a fresh water alga. It is found in pond. It is also present on the moist soil. It is unicellular. Its cell is elongated and elliptical. Cell wall is chiefly composed of pectic substances

The course has been developed to provide the students basic knowledge about viruses, viroids, Prions, bacteria and algae. The students will explore the living world which is not visible to naked eye. The students will learn about how molecular entities like viruses have been used or can be exploited in future in the production of vaccines and. ADVERTISEMENTS: In this article we will discuss about:- 1. General Features of Chlorophyta 2. Distribution of Chlorophyta 3. Plant Body 4. Reproduction. General Features of Chlorophyta: Chlorophyta is the largest of the eight divisions of algae. Members of the Chlorophyta, or grass-green algae are similar to higher plants being characterized by a well-defined nucleus, photosynthetic [

Introduction to the algae - SlideShar

PLANTS THAT REPRODUCE BY SPORES

Types of Algae Reproduction, Classification, Examples and Microscopy. Algae are photosynthetic organisms belonging to the kingdom Protista. Alga is the singular of algae with a changing size from microscopic unicellular micro-algae (Chlorella and Diatoms) to large massive kelps that are usually a length extending in meters (200 feet) and then there's brown alga ALGAE IN FILTER PLANTS An algae scrubber filters water by moving water rapidly over a rough, highly illuminated surface, which causes algae to start growing in large amounts. As the algae grow, they consume nutrients such as inorganic nitrate, inorganic phosphate, nitrite, ammonia, and ammonium from the water. 45 • Reproduction: It is a biological process in which an organism gives rice to young ones or offspring. • Reproduction enables the continuity of species generation after generation. • Types of reproduction: • Asexual reproduction: It is the reproduction by single parent with out formation of gametes In this method, the parent unicellular algae mitotically divides into two daughter cells by Fission or septum formation. Example: Chlamydomonas, Diatoms. (iii). Fragmentation. This is considered as the most common method of algal reproduction. In this method, the filamentous thalli breaks into two or many fragments

In common that bryophytes have originated from algae ( PDF 21P ) this Note contains of. ( 1940 ), Hickman ( 1961 ) and Storer ( 1965 ), Hickman 1961. By 98 genera classification of algae slideshare about 2,500 species mitochondria, Endoplasmic reticulum and a nucleus through process Reproduction in algae can be vegetative, asexual, or sexual. Vegetative reproduction occurs through fragmentation, asexual occurs through formation of spores and binary fission, whereas sexual reproduction takes place by fusion of two haploid gametes. Some algal species can reproduce by more than one means depending upon the environmental conditions

Video: Algae: general characters and classification - SlideShar

Asexual reproduction can happen much more quickly, and therefore is the predominant way of reproduction during optimal environmental conditions, but sexual reproduction is essential for species adaptation and survival because it allows for genetic recombination (i.e. genetic variability). During the sexual phase, two haploid cells called gamete algal cell and cyanobacterial cell, economic importance of algae. Lichens classification, thallus organization, reproduction, physiology and role in environmental pollution, Ecological and economic importance of lichens Unit-II The characteristics and life cycles of the following: Cyanophyta: Microcystis, Oscillatoria Culture of algae in laboratory is not only important for knowing the details of the external morphology and reproduction in a particular algae or algal group, it is equally important to know the details of algal life-histories, taxonomy, physiology, biochemistry, genetics and also its ultra-structure

Algae

General Characteristics of Algae with Key Points Easy

Slide is prepared for CBSE class 12th students Reproduction Reproduction in Algae occurs in both asexual and sexual forms. However most Algae reproduce asexually. Many small Algae reproduce asexually by ordinary cell division or by fragmentation, whereas larger Algae reproduce by spores. The process of replication and division of the nucleus that results in the production of genetically. ADVERTISEMENTS: In this article we will discuss about:- 1. General Features of Chlorophyta 2. Distribution of Chlorophyta 3. Plant Body 4. Reproduction. General Features of Chlorophyta: Chlorophyta is the largest of the eight divisions of algae. Members of the Chlorophyta, or grass-green algae are similar to higher plants being characterized by a well-defined nucleus, photosynthetic [ The algae are autotrophic protists that can be unicellular or multicellular. These organisms are found in the supergroups Chromalveolata (dinoflagellates, diatoms, golden algae, and brown algae) and Archaeplastida (red algae and green algae). They are important ecologically and environmentally because they are responsible for the production of approximately 70% of the oxygen and organic matter. REPRODUCTION AND LARVAL SETTLEMENT OF CORAL VIJAYKUMAR, M.E, DFK - 1304 I PhD, Dept. of FRM College of Fisheries, Mangalore-02 O SlideShare utiliza cookies para otimizar a funcionalidade e o desempenho do site, assim como para apresentar publicidade mais relevante aos nossos usuários

Asexual reproductionChara

The Algae - Chlorophycae - Conjugales - Spirogyra. Conjugales are Chlorophyceae devoid of flagellated reproductive boies. Sexual reproduction is by means of amoeboid gametes. Asexual reproduction is unknown. The vegetative cells are generally large, and possess large, elaborately shaped chloroplasts. The plants may be unicellular or the cells. Textbook of Algae. O. P. Sharma. Tata McGraw-Hill Education, Jan 1, 1986 - Algae - 396 pages. 10 Reviews. Aimed to meet requirements of undergraduate students of botany. This book covers topics such as: evolution of sex and sexuality in algae; and, pigments in algae with their chemistry and the evolution of thallus in algae. More »

Yellow colour of egg yolk is due to carotenoids (source wikipedia) Two types of carotenoids are found in algae. (1). Carotenes: Ø Carotenes are yellow coloured pigments. Ø They are unsaturated fat soluble hydrocarbons. Ø They do not contain oxygen. Ø They absorb blue and green light and transmit yellow and red light Sexual Reproduction: The sexual reproduc­tion in Oedogonium is an advanced oogamous type. The male gametes or antherozoides are produced in antheridium (Fig. 3.75) and the female gamete or egg is produced in oogonium (Fig. 3.76). Male and female gametes differ both morphologically and physiologically Ø Among the three phases, two will be diploid and one haploid phase Diplobiontic life cycle is found in all Rhodophycean members except those in the order Nemalionales. Ø Polysiphonia is the most common example showing haplo-diplobiontic life cycle. Ø The life cycle of Polysiphonia includes three phases (a). Carposporophyte - diploid (2n) (b). Gametophyte - haploi Reproduction. Algae reproduce by means of both asexual and sexual reproduction. Asexual reproduction in algae occurs through vegetative reproduction meaning that if any part of the algal fragment breaks, it is capable of turning into a new algal colony or individual. There are also more complex ways of reproducing asexually, namely by the. These algae are classified into pinnate and centric groups. The ones belonging to the latter group are round in shape, and the former ones are elongated. The reproduction process can occur by either sexual or asexual reproduction. All diatoms pass through a seed-like or a spore phase called the resting spore

General Characteristics of Algae PPT & PDF Easy Biology

Reproduction. Fungi reproduce sexually and/or asexually. Perfect fungi reproduce both sexually and asexually, while imperfect fungi reproduce only asexually (by mitosis). In both sexual and asexual reproduction, fungi produce spores that disperse from the parent organism by either floating on the wind or hitching a ride on an animal Spirogyra. Spirogyra is a green algae belonging to the class chlorophyceae. The genus Spirogyra comprises more than 300 species and most of them are free floating algae. However, some species like S. rhizopus, S. dubia etc are found attached to substratum by the means of rhizoids. Habitat: they are commonly found floating in fresh water. Sexual reproduction differs in centric and pennates diatoms. Centric diatoms undergo meiosis to form eggs and sperm. Oogonial cells usually produces one egg, which may be released into the water or retained. Size decreases as mitosis proceeds. This provides a timing mechanism between sexual reproduction. Figure 7. Diatoms sexual divisio

algae classification

Reproduction in Bacillariophyta (With Diagram

For more information:http://www.7activestudio.com info@7activestudio.comhttp://www.7activemedical.com/ info@7activemedical.comhttp.. Algae - Algae - Classification of algae: The classification of algae into taxonomic groups is based upon the same rules that are used for the classification of land plants, but the organization of groups of algae above the order level has changed substantially since 1960. Early morphological research using electron microscopes demonstrated differences in features, such as the flagellar. Mosses and Liverworts General Characteristics (Key points with PPT) Ø Bryophytes are the most simplest and most primitive land plants Ø Name bryophyte is derived from two words; 'Bryon' = moss; 'phyton' = plant Ø At present the phylum Bryophyta includes ~ 960 genera and ~ 24000 species. Habit and Habitat of Bryophytes. Ø They are cosmopolitan in distributio Life Cycle of Pteridophytes, Alternation of Generation in Pteridophytes, Reproduction in Pteri O SlideShare utiliza cookies para otimizar a funcionalidade e o desempenho do site, assim como para apresentar publicidade mais relevante aos nossos usuários Chlorophyceae (green algae) Phaeophyceae (brown algae) Rhodophyceae (red algae). 1. Chlorophyceae (Green algae) General characterstics of Chlorophyceae. It is the largest class of algae; They are commonly known as green Algae. Photosynthetic pigments: They possesses chlorophyll a, chlorophyll b and small amount of β-carotenoids

Reproduction in Brown Algae Phaeophyta: The Brown Algae

Bharti Sharma, Elena M. Kramer, in Encyclopedia of Reproduction (Second Edition), 2018. Introduction. The lineage Plantae includes glaucophyte algae, red algae, green algae and land plants. Representatives of the green algal lineage moved onto land around 470 million years ago and became the dominant inhabitants of the ecosystem (Delwiche and Cooper, 2015) Asexul reproduction found in old thallus of Volvox sp. After produce new colony they either saty within the parent thallus body for 2to3 generation or they l.. Genus: Chlamydomonas algae كلاميدوموناس. Occurrence. Chlamydomonas has 150 species. It is the commonest unicellular Volvocales. It is one of the simplest unicellular widely distributed algae. It is found in standing water of ponds, pools, ditches and on moist soil. It often grows in abundance in water rich in ammonium compounds The mode of reproduction that is found in algae is either by vegetative mode or asexual mode or sexual mode. Vegetative reproduction occurs by fragmentation wherein each fragment develops into a thallus. Asexual reproduction occurs by the production of spores, called the zoospores. These zoospores have flagella that make them motile Origins of Sexual Reproduction Lukas Schärer Evolutionary Biology Zoological Institute University of Basel 1 7.10.2020 Advanced-level Evolutionary Biology 2 for example, the green algae • isogamy is very likely the ancestral condition isogamous and anisogamous gametes in the green algae

Reproduction. Reproduction in the Protozoa may be asexual, as in the amebas and flagellates that infect humans, or both asexual and sexual, as in the Apicomplexa of medical importance. The most common type of asexual multiplication is binary fission, in which the organelles are duplicated and the protozoan then divides into two complete organisms 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. Asexual reproduction is the most common method of reproduction in organisms having simpler body like in algae and fungi but during unfavorable condition they shift to sexual reproduction. SEXUAL REPRODUCTION: Involves formation of male and female gamete by two individuals of the opposite sex

Biodiesel production from algae

Biology Notes on Xanthophyta Alga

Sexual Reproduction in Protozoa: The modes of reproduction in which two gametes unite to form a new individual is known as sexual reproduction. The two units (male and female gametes) from two separate individuals unite by fusion of their cytoplasm, followed by the union of their nuclei. Most protists (protozoa) can continue to live, mul. General characteristics of algae, Classification of algae based on habitat, Thallus diversity in algae, Chloroplast shape variations in algae, Pigmentation in algae, Reproduction in algae, Life cycle in algae . Characteristics of Fungi. In the vast majority they are found in subtle K.ThangaMallika Hans-Wolfgang Ackermann and Grzegorz Węgrzyn

Thallus Organization & Reproduction in Lichens | Easy

life cycle of algae slideshar

protozoan - protozoan - Mechanisms of asexual reproduction: Asexual reproduction in free-living species usually involves nuclear division and the division of the cell into two identical daughter cells of equal size by binary fission. In parasitic protozoans and some free-living species, multiple fission, resulting in the production of many offspring that may not resemble the parent cell, is. Unicellular algae occur most frequently in water, especially in plankton.Phytoplankton is the population of free‐floating microorganisms composed primarily of unicellular algae. In addition, algae may occur in moist soil or on the surface of moist rocks and wood. Algae live with fungi in lichens.. According to the Whittaker scheme, algae are classified in seven divisions, of which five are. Older taxonomic systems of the algae (e.g. Smith 1950) place all of the green algae into a single group. A body of ultrastructural evidence began to accrue (summarized by Pickett-Heaps 1975; and Mattox and Stewart 1984) that supported the occurrence of a group of green algae that had characters in common with the land plants (i.e. phragmoplast.

Bryophytes: Reproduction, Origin and Affinities (With Diagram

Reproduction and life cycles. Cell division in protists, as in plant and animal cells, is not a simple process, although it may superficially appear to be so. The typical mode of reproduction in most of the major protistan taxa is asexual binary fission.The body of an individual protist is simply pinched into two parts or halves; the parental body disappears and is replaced by a pair of. Protozoa Reproduction Protozoa can reproduce sexually or asexually. Asexual reproduction is the process in which an organism produces offspring by itself, without the participation of another. Cryptogams are less evolved seedless plants that reproduce by the production of spores Bryophytes SlideShare June 14th, 2019 - Sporophyte dependent on gametophyte Heteromorphic alternation of General characters reproduction and classification of June 2nd, 2019 - The sporophyte of Riccia is very simple consists of capsule only e g June 14th.

Algae - Reproduction and life histories Britannic

Water Microbiology. Ø Even though plants originated in water, except algae, most of the aquatic plants are evolved from their mesophytic relatives. The LibreTexts libraries are Powered by MindTouch ® and are supported by the Department of Education Open Textbook Pilot Project, the UC Davis Office of the Provost, the UC Davis Library, the California State University Affordable Learning. algae quora. algae 101 part six algal classification algae industry. ppt - algae powerpoint presentation free to download. algae classification and pigmention tmolly de. pigmentation in algae ppt by easybiologyclass slideshare. algae structure and reproduction peoi. algae

This year, we will go more in depth about the biological concepts that you studied in 7th grade. 4th grade should come home from school , take bath, have food and relax for 45 mins or take a nap for 1/2 hr and then finish his all school homework. Quickly memorize the terms, phrases and much more. The snail eats algae that grows on the seaweed Skip to content. About; Communities; Gallery; Past projects; Testimonials; algae ppt slideshare prepared by s rath pgt biology reproduction in organism- class xii biology reproduction in organisms www.cbse123.co.cc (chapter 1) O SlideShare utiliza cookies para otimizar a funcionalidade e o desempenho do site, assim como para apresentar publicidade mais relevante aos nossos usuários sexual reproduction: Whenever, two isogametes of different mating types are collided by chance, they are contacted with each other towards their flagellar ends. Both gametes unite and form a diploid. The zygote soon loses its flagella, develops a thick wall around it and becomes relatively more resistant to unfavourable growth conditions Asexual Reproduction. Plant cuttings/ vegetative propagation. Vegetative reproduction is a type of asexual reproduction in plants that relies on multi-cellular structures formed by the parent plant. It has long been exploited in horticulture and agriculture, with various methods employed to multiply stocks of plants