Asexual reproduction only needs one parent; all the offspring are clones. This means they are genetically identical to one another and to the parent. Many plants use asexual reproduction, like spider plants. Bacteria also reproduce asexually in a process called binary fission. And even some animals use asexual reproduction. It is much less common, but is seen in some simple ones like Hydra, Aphids and starfish. Asexual reproduction does not involve sex cells or fertilisation. Asexual reproduction occurs using normal cell division known as mitosis. One major advantage of asexual reproduction is that populations can increase rapidly. They don’t have to waste time and energy in finding a mate. Also by being clones, they can exploit a suitable habitat quickly. They fill the niches, making it harder for predators and competitors to invade. However, it also comes with disadvantages. There is no genetic variation; if the climate or selection pressures change then the population will be much slower to adapt as they have no diversity. By being identical, the population is best suited to only that one habitat and all have the same vulnerability to disease. The same traits also mean the same weaknesses. If a predator or disease adapts to kill one individual, then they can take out the entire population, resulting in extinction. Genetic variation does have a lot of merits. Some organisms can combine both sexual and asexual reproduction depending upon the circumstances. Malarial parasites reproduce asexually in the human host, but sexually in the mosquito. Many fungi reproduce asexually by spores but also reproduce sexually to give variation. And many plants produce seeds sexually, but also reproduce asexually by runners such as strawberry plants, or bulb division such as daffodils. Even aphids alternate between sexual and asexual reproduction- asexually in the spring and summer, and then sexually in the winter as the eggs can survive the cold better. SUBSCRIBE to the FuseSchool YouTube channel for many more educational videos. Our teachers and animators come together to make fun & easy-to-understand videos in Chemistry, Biology, Physics, Maths & ICT. VISIT us at www.fuseschool.org, where all of our videos are carefully organised into topics and specific orders, and to see what else we have on offer. Comment, like and share with other learners. You can both ask and answer questions, and teachers will get back to you. These videos can be used in a flipped classroom model or as a revision aid. Find all of our Chemistry videos here: https://www.youtube.com/watch?v=cRnpKjHpFyg&list=PLW0gavSzhMlReKGMVfUt6YuNQsO0bqSMV Find all of our Biology videos here: https://www.youtube.com/watch?v=tjkHzEVcyrE&list=PLW0gavSzhMlQYSpKryVcEr3ERup5SxHl0 Find all of our Maths videos here: https://www.youtube.com/watch?v=hJq_cdz_L00&list=PLW0gavSzhMlTyWKCgW1616v3fIywogoZQ Twitter: https://twitter.com/fuseSchool Access a deeper Learning Experience in the FuseSchool platform and app: www.fuseschool.org Follow us: http://www.youtube.com/fuseschool Friend us: http://www.facebook.com/fuseschool This Open Educational Resource is free of charge, under a Creative Commons License: Attribution-NonCommercial CC BY-NC ( View License Deed: http://creativecommons.org/licenses/by-nc/4.0/ ). You are allowed to download the video for nonprofit, educational use. If you would like to modify the video, please contact us: [email protected]
Views: 141460 FuseSchool - Global Education
Find 1500+ education videos available at http://www.youtube.com/user/IkenEdu Biology is the vast subject including all about animals, human and plants. In this video, you will learn about various biological organisms such eukaryotic, prokaryotic and others. Watch the full video and learn all about kingdom Animalia. This is an important biology lesson for you. Don't miss it.
Views: 750185 Iken Edu
#mushroom#recipe#dhakalbinod# https://www.youtube.com/channel/UCZ6OmZ7jBxCmBAgg6oDjEXA #dhakalbinod Mushrooms(Basidiocarp) are the common group of fungi.They are generally saprophytic and cosmopolitan.They obtain their food dead and decying organic matters.Mushroom differ from other plants in the sence that they have no chlorophyll and are unable to prepare their own food.In rainy seasons they grow on damps rotton logs of wood, tree trunk, decying or ganic matters and in dumps soil rich in organic substances. some spices of mushroom are edible however some are non edible that are poisonous.Specially coloured mushroom are poisonous. Classification of Mushroom kingdom: plantae Subkingdom:Cryptogams Division:Thallophyta Sub-Division:Fungi Genus:Agaricus Common Name:Mushroom यस्तै रमाइला भिडियो हेर्न को लागी हाम्रो यो च्यानल Subscribe गर्न नभुल्नु होला.... देश तथा बिदेश मा रहेर हाम्रो यस Youtube Chanel मार्फत भिडियो हेरी रहनु भयका दर्शक हरु मा ,यदी तपाईं हरु पनि कुनै पनि गीत रेकडिङ ,म्युजिक भिडियो, कुनै पनि गीत लाई बजार ब्यबस्थापना गर्नु परेमा हामी लाई संम्पर्क गर्नु होला :- Music Lab Pvt.Ltd. 9841720546/9851010112/9841850402 Right for this video is provided by Music Lab Pvt.Ltd. Station of Nepali Music & Entertainment Keep Loving Nepali Music and Artists.
Views: 1656 Music LAB / Dhakal Binod
Soil sealing means covering soil with an impermeable surface such as asphalt or concrete to make way for roads, houses, schools, offices and parking zones - symbols of urban growth. As Europe's population increases, the continent grows ever closer to running out of the space needed to maintain its people. Soil embraces a number of essential functions for life including for agriculture and the provision of locally-produced food; for regulating water flows to prevent floods and the overloading of sewage systems; for storing large quantities of carbon, thereby helping to fight climate change; as an important reserve of biodiversity and for the provision of green, recreational spaces. A combination of factors - including ill-conceived urban planning strategies, excessive land consumption and inefficiently-used land where infrastructures, such as warehouses, stand empty in villages and towns -- has led to an urgent need for concrete measures and the promotion of an integrated approach at EU and national level. For journalists interested in covering this topic, we are offering a VNR free of charge and copyright which includes assorted interviews and high-quality footage -- including some aerial shots of the European landscape - from: - Italy, where in the Parma municipality, part of the so-called "Food Valley", agricultural land the size of a football pitch is lost to soil sealing every day; - Austria, where empty and abandoned plots are being revitalised; - Belgium, where measures are being taken in local communities to rehabilitate many soil-sealed areas.
Views: 852 OneWorldTV
Panel Discussion and Book Signing with: James Hanken, Professor of Biology, Department of Organismic and Evolutionary Biology, Curator in Herpetology; Alexander Agassiz Professor of Zoology; and Director, Museum of Comparative Zoology, Harvard University Nancy Pick, Science Writer and Editor Donald Pfister, Asa Gray Professor of Systematic Botany and Curator of the Farlow Library and Herbarium, Harvard University Raquel Alonso Perez, Curator, Harvard Mineralogical & Geological Museum In the words of biologist Edward O. Wilson, the Harvard Museum of Natural History stands as both "cabinet of wonder and temple of science." Its rich and unlikely history involves literary figures, creationists, millionaires, and visionary scientists, from Asa Gray to Stephen Jay Gould. First published in 2004, Rarest of the Rare tells fascinating stories about the vast and diverse collections of animals, minerals, and plants housed at the museum. To celebrate the book’s reissue, a panel will discuss the relevance of the museum’s scientific collections in thetwenty-first century and the value of knowing the history of these great treasures. November 12, 2015, 6:00pm
Views: 1045 Harvard Museum of Natural History
"New Perspectives on Biogeochemical Cycles and Human Impacts On Our Planet" William H. Schlesinger, President of the Cary Institute of Ecosystem Studies. introduced by Ross Virginia, Myers Family Professor of Environmental Science, Director of the Institute of Arctic Studies, and PI of the NSF IGERT Program in Polar Environmental Change. Start: 4pm End: 5:30pm Location: Life Sciences Center, Room 100 Details: Dr. Schlesinger will provide some new ways of examining global biogeochemical cycles and assessing human impact on the cycles of important biogeochemical elements. He will focus on the ongoing, major impact to the cycles of carbon and nitrogen, and what we have learned by large-scale long-term field experiments. Dr. Schlesinger was among the first to quantify the amount of carbon held in soil organic matter globally, providing subsequent estimates of the role of soils and human impacts on forest and soils in global climate change. Sponsored by IGERT Dialogues in Polar Science, Engineering, and Society Seminar Series and the Institute of Arctic Studies at the Dickey Center.
Views: 5027 Dartmouth
Direct links to chapters one to seven below, 1: Introduction - http://youtu.be/YLXPeiWcspA?t=14s 2: Setting up your plot - http://youtu.be/YLXPeiWcspA?t=3m4s 3: Measuring ground cover - http://youtu.be/YLXPeiWcspA?t=4m40s 4: Recording evidence of exotic fauna - http://youtu.be/YLXPeiWcspA?t=6m7s 5: Measuring projected crown cover - http://youtu.be/YLXPeiWcspA?t=7m12s 6: Recording crown type of native overstorey - http://youtu.be/YLXPeiWcspA?t=9m6s 7: Recording plant species diversity - http://youtu.be/YLXPeiWcspA?t=9m6s The Biodiversity Fund Ecological Monitoring Guide is available to view and download with the following link: http://www.environment.gov.au/cleanenergyfuture/biodiversity-fund/meri/pubs/eco-monitoring-guide.pdf The Biodiversity Fund is an ongoing program within the Australian Government's Clean Energy Future Plan that will support land managers to undertake projects that establish, restore, protect or manage biodiverse carbon stores. The Biodiversity Fund Ecological Monitoring Guide will assist you to collect biodiversity related field data and record it for reporting purposes. This process will allow the department to determine the trend in condition of your Biodiversity Fund project and the program as a whole.
Views: 1620 DeptEnvironment
Anton Telitsyn, CEO & Founder of Lordmancer 2 at the Crypto Games Conference in Kyiv, May 11, 2018 https://cryptogames.events https://www.facebook.com/pg/CryptoGamesConference https://www.linkedin.com/company/cryptogamesconference https://t.me/joinchat/CPaX9A6l4_c967ROzVi28w https://web.telegram.org/#/im?p=g245752823
Views: 183 Crypto Games Conference
This is an audio version of the Wikipedia Article: https://en.wikipedia.org/wiki/Glossary_of_botanical_terms 00:00:30 A 00:18:23 B 00:26:29 C 00:53:03 D 01:02:22 E 01:11:18 F 01:20:15 G 01:28:05 H 01:36:35 I 01:45:43 J 01:46:21 K 01:48:23 L 01:56:20 M 02:06:46 N 02:10:17 O 02:15:39 P 02:35:10 3 sets, tetraploid 02:35:23 5 sets, hexaploid 02:41:48 Q 02:42:02 R 02:50:38 S 03:17:32 T 03:27:22 U 03:30:36 V 03:36:15 W 03:38:31 X 03:39:22 Z 03:40:01 See also Listening is a more natural way of learning, when compared to reading. Written language only began at around 3200 BC, but spoken language has existed long ago. Learning by listening is a great way to: - increases imagination and understanding - improves your listening skills - improves your own spoken accent - learn while on the move - reduce eye strain Now learn the vast amount of general knowledge available on Wikipedia through audio (audio article). You could even learn subconsciously by playing the audio while you are sleeping! If you are planning to listen a lot, you could try using a bone conduction headphone, or a standard speaker instead of an earphone. Listen on Google Assistant through Extra Audio: https://assistant.google.com/services/invoke/uid/0000001a130b3f91 Other Wikipedia audio articles at: https://www.youtube.com/results?search_query=wikipedia+tts Upload your own Wikipedia articles through: https://github.com/nodef/wikipedia-tts Speaking Rate: 0.7769676767044741 Voice name: en-AU-Wavenet-C "I cannot teach anybody anything, I can only make them think." - Socrates SUMMARY ======= This glossary of botanical terms is a list of terms relevant to botany and plants in general. Terms of plant morphology are included here as well as at the related Glossary of plant morphology and Glossary of leaf morphology. See also List of Latin and Greek words commonly used in systematic names. You can help by adding illustrations that assist an understanding of the terms.
Views: 89 wikipedia tts
Biological soil crust is a living groundcover that forms the foundation of high desert plant life in Arches and the surrounding area. This knobby, black crust is dominated by cyanobacteria, but also includes lichens, mosses, green algae, microfungi and bacteria. Cyanobacteria, previously called blue-green algae, are one of the oldest known life forms. It is thought that these organisms were among the first land colonizers of the earth's early land masses, and played an integral role in the formation and stabilization of the earth's early soils. Extremely thick mats of these organisms converted the earth's original carbon dioxide-rich atmosphere into one rich in oxygen and capable of sustaining life. When wet, Cyanobacteria move through the soil and bind rock or soil particles, forming an intricate web of fibers. In this way, loose soil particles are joined together, and an otherwise unstable surface becomes very resistant to both wind and water erosion. The soil-binding action is not dependent on the presence of living filaments. Layers of abandoned sheaths, built up over long periods of time, can still be found clinging tenaciously to soil particles, providing cohesion and stability in sandy soils at depths up to 10cm. Nitrogen fixation is another significant capability of cyanobacteria. Vascular plants are unable to utilize nitrogen as it occurs in the atmosphere. Cyanobacteria are able to convert atmospheric nitrogen to a form plants can use. This is especially important in desert ecosystems, where nitrogen levels are low and often limiting to plant productivity. Soil crusts have other functions as well, including an ability to intercept and store water, nutrients and organic matter that might otherwise be unavailable to plants.
Views: 160 Born to Wander
This is an audio version of the Wikipedia Article: Sex 00:01:38 1 Overview 00:04:08 2 Evolution 00:06:38 3 Sexual reproduction 00:08:50 3.1 Animals 00:11:29 3.2 Plants 00:13:43 3.3 Fungi 00:14:53 4 Sex determination 00:16:07 4.1 Genetic 00:19:15 4.2 Nongenetic 00:20:30 5 Sexual dimorphism 00:22:59 6 See also Listening is a more natural way of learning, when compared to reading. Written language only began at around 3200 BC, but spoken language has existed long ago. Learning by listening is a great way to: - increases imagination and understanding - improves your listening skills - improves your own spoken accent - learn while on the move - reduce eye strain Now learn the vast amount of general knowledge available on Wikipedia through audio (audio article). You could even learn subconsciously by playing the audio while you are sleeping! If you are planning to listen a lot, you could try using a bone conduction headphone, or a standard speaker instead of an earphone. You can find other Wikipedia audio articles too at: https://www.youtube.com/channel/UCuKfABj2eGyjH3ntPxp4YeQ You can upload your own Wikipedia articles through: https://github.com/nodef/wikipedia-tts "The only true wisdom is in knowing you know nothing." - Socrates SUMMARY ======= Organisms of many species are specialized into male and female varieties, each known as a sex. Sexual reproduction involves the combining and mixing of genetic traits: specialized cells known as gametes combine to form offspring that inherit traits from each parent. The gametes produced by an organism define its sex: males produce small gametes (e.g. spermatozoa, or sperm, in animals; pollen in seed plants) while females produce large gametes (ova, or egg cells). Individual organisms which produce both male and female gametes are termed hermaphroditic. Gametes can be identical in form and function (known as isogamy), but, in many cases, an asymmetry has evolved such that two different types of gametes (heterogametes) exist (known as anisogamy). Physical differences are often associated with the different sexes of an organism; these sexual dimorphisms can reflect the different reproductive pressures the sexes experience. For instance, mate choice and sexual selection can accelerate the evolution of physical differences between the sexes. Among humans and other mammals, males typically carry an X and a Y chromosome (XY), whereas females typically carry two X chromosomes (XX), which are a part of the XY sex-determination system. Other animals have different sex-determination systems, such as the ZW system in birds, the X0 system in insects, and various environmental systems, for example in crustaceans. Fungi may also have more complex allelic mating systems, with sexes not accurately described as male, female, or hermaphroditic.
Views: 66 wikipedia tts
This is a Documentary on the "People’s Biodiversity Register". This programme is launched by Assam State Biodiversity Board. People’s Biodiversity Registers and the role of the Biodiversity Management Committee: The mandate of the Biodiversity Management Committee has been clearly highlighted in the Biological Diversity Rules 2004 as follows: • The main function of the BMC is to prepare People’s Biodiversity Register in consultation with the local people. The Register shall contain comprehensive information on availability and knowledge of local biological resources, their medicinal or any other use. • The other functions of the BMC are to advice on any matter referred to it by the State Biodiversity Board or Authority for granting approval, to maintain data about the local vaids and practitioners using the biological resources. • The Authority shall take steps to specify the form of the People’s Biodiversity Registers, and the particulars it shall contain and the format for electronic database. • The Authority and the State Biodiversity Boards shall provide guidance and technical support to the Biodiversity Management Committees for preparing People’s Biodiversity Registers. • The People’s Biodiversity Registers shall be maintained and validated by the Biodiversity Management Committees. People’s Biodiversity Registers (PBR): The evolution of human societies over several millennia is closely related to plants and animals. The domestication of crop plants and farm animals about 12000 years ago revolutionized the human civilization by creating more stabilized societies. The early historic and medieval period gradually reduced human interaction with the wild plants and animals. The development of modern science and technologies during the industrial and post-industrial period did not do away with our link to nature. Different groups of people continue to depend on natural resources at varying scales. Some draw resources from across continents while others within a country or a region. There are also people continue to depend on locally available biodiversity and bio-resources for their livelihoods. Such population who are directly dependent on local biological resources have, through their keen sense of observation, practices, and experimentation developed and established a body of knowledge that is passed on from generation to generation. Some are widespread traditional knowledge like cultivation practices; others are highly specialized such as bone setting or jaundice, which are generally passed only to close members of the family. India is land of biological and cultural diversity. It is one of the mega biodiverse countries of the world. It also the home of a large number of tribal groups, pursuing different kinds of nature based livelihoods. In addition, a large number of farming and fishing communities and nomadic groups posses traditional knowledge of varying degrees. The development of modern science and technologies notably biotechnology and information technologies have increased the value of biodiversity and associated knowledge including traditional knowledge (TK) .The growing importance of biodiversity, bio-resources and associated knowledge is fairly well understood. The first step towards conservation is sustainable utilization of biodiversity and its documentation. Biodiversity and associated knowledge is found in different ecosystems, under different legal management regimes and hence the results and manner of documentation will also differ. The present manual guidelines have drafted taking into consideration different ecosystems and include the rural, urban and protected areas. The guidelines may be customized and further information may be added to enrich the effort. It is important to keep in mind some of the issues related to PBRs: • It is to be undertaken in a participatory mode involving varying sections of village society. • While documenting, the knowledge and views of both genders are to be recorded. • Information provided by people need to be collated, analysed and crosschecked by the members of the Technical Support Group (TSG) before documentation. • The PBR is important base document in the legal arena as evidence of prior knowledge and hence careful documentation is necessary. • The document should be endorsed by the BMC and later publicized in the Gram Sabha / Gram Panchayat / Panchayat Samiti. The document can be a very useful tool in the management and sustainable use of bioresources. The document can also be a very useful teaching tool for teaching environmental studies at schools, colleges and university level • The document should be periodically updated with additional and new information as and when generated.
Views: 156 Sumit Nath
This is an audio version of the Wikipedia Article: https://en.wikipedia.org/wiki/Timeline_of_women_in_science 00:00:46 1 Ancient history 00:02:15 2 Middle Ages 00:04:05 3 16th century 00:05:21 4 17th century 00:08:32 5 18th century 00:15:16 6 Early 19th century 00:20:49 7 Late 19th century 00:30:49 8 Early 20th century 00:30:59 8.1 1900s 00:36:28 8.2 1910s 00:41:27 8.3 1920s 00:44:41 8.4 1930s 00:48:44 8.5 1940s 00:52:58 9 Late 20th century 00:53:09 9.1 1950s 00:58:32 9.2 1960s 01:03:35 9.3 1970s 01:07:35 9.4 1980s 01:10:29 9.5 1990s 01:13:56 10 21st century 01:24:14 11 See also Listening is a more natural way of learning, when compared to reading. Written language only began at around 3200 BC, but spoken language has existed long ago. Learning by listening is a great way to: - increases imagination and understanding - improves your listening skills - improves your own spoken accent - learn while on the move - reduce eye strain Now learn the vast amount of general knowledge available on Wikipedia through audio (audio article). You could even learn subconsciously by playing the audio while you are sleeping! If you are planning to listen a lot, you could try using a bone conduction headphone, or a standard speaker instead of an earphone. Listen on Google Assistant through Extra Audio: https://assistant.google.com/services/invoke/uid/0000001a130b3f91 Other Wikipedia audio articles at: https://www.youtube.com/results?search_query=wikipedia+tts Upload your own Wikipedia articles through: https://github.com/nodef/wikipedia-tts Speaking Rate: 0.7983986663362643 Voice name: en-GB-Wavenet-D "I cannot teach anybody anything, I can only make them think." - Socrates SUMMARY ======= This is a timeline of women in science, spanning from ancient history up to the 21st century. While the timeline primarily focuses on women involved with natural sciences such as astronomy, biology, chemistry and physics, it also includes women from the social sciences (e.g. sociology, psychology) and the formal sciences (e.g. mathematics, computer science), as well as notable science educators and medical scientists. The chronological events listed in the timeline relate to both scientific achievements and gender equality within the sciences.
Views: 96 wikipedia tts
The Collected Works of Edgar Allan Poe, Raven Edition, Volume 2 The Thousand and Second Tale of Scheherazade Read by, Morgan Saletta
Views: 41 Lane M.M. Whitens