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: 130104 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: 731538 Iken Edu
"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: 4977 Dartmouth
https://www.youtube.com/channel/UCZ6OmZ7jBxCmBAgg6oDjEXA 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: 1575 Dhakal Binod / Music LAB
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: 1598 DeptEnvironment
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: 1014 Harvard Museum of Natural History
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: 58 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: 31 Lane M.M. Whitens
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: 49 wikipedia tts
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: 30 wikipedia tts