Sexual Reproduction in Flowering plants Class 12 #2| Pollination |Double Fertiization | CBSE NEET
➡️Free Notes: https://bit.ly/Class12BiologySexualRe... ➡️Join Telegram:https://t.me/LearnoHub12 ➡️Ask Doubts:https://www.examfear.com/question/ Timestamps: 0:00 Introduction 1:02 Pollination 3:11 Self Pollination 4:11 Cross Pollination 5:14 Types of Pollination 5:40 Autogamy 11:08 Geitonogamy 12:24 Xenogamy 14:04 Pollinating agents 15:04 Pollination by Wind 17:39 Pollination by Water 19:06 Pollination by wind and water 19:55 Pollination by biotic agents 20:43 Insect/animal pollination 21:58 Yucca plant-Moth relationship 24:37 Outbreeding devices 30:36 Compatibility between pollen and pistil 33:20 Compatibility pollen and pistil interaction 36:50 Incompatible pollen pistil interaction 37:21 Pollen pistill interaction 39:21 Artificial Hybridization 43:30 Fertilization in a flowering plant 44:59 Double Fertilization 45:43 Post fertilization events 47:20 Endosperm 50:14 Free-nuclear endosperm 51:31 Types of Seed 53:08 Embryo 53:55 Stages of Embryogeny in an embryo 54:51 Dicotyledonous Embryo 57:27 Monocotyledonous Embryo 58:30 Seed 58:51 Ovule to Seed 1:01:09 Basic Structure of a seed 1:02:21 Types of seed: Monocot & Dicot 1:02:53 Dicotyledonous seed structure 1:05:44 Monocotyledonous seed structure 1:08:16 Ovary to Fruit 1:08:35 Fruit 1:09:41 Edible pars of different fruits 1:12:45 Fruit types 1:13:26 Parthenocarpic fruit 1:15:01 Seeds:Uses in Agriculture 1:15:50 Apomixis 1:18:32 Apomixis: Importance In this video, we will cover:- Pollination is the mechanism to achieve this objective. Transfer of pollen grains (shed from the anther) to the stigma of a pistil is termed pollination. Flowering plants have evolved an amazing array of adaptations to achieve pollination. Plants use two abiotic (wind and water) and one biotic (animals) agents to achieve pollination. Majority of plants use biotic agents for pollination. Majority of flowering plants produce hermaphrodite flowers and pollen grains are likely to come in contact with the stigma of the same flower. Pollinating agents are animals such as insects, birds, and bats; water; wind; and even plants themselves, when self-pollination occurs within a closed flower. In angiosperms, after the pollen grain (gametophyte) has landed on the stigma, it germinates and develops a pollen tube which grows down the style until it reaches an ovary. LearnoHub.com (formerly called ExamFear Education) is a Free Education platform with more than 6000 videos on Physics, Chemistry, Maths, Biology, English, Science experiments, tips & tricks and motivational videos for Classes 6 to 12. Learn for Free! ➡️Website: http://www.learnohub.com ➡️Facebook: https://bit.ly/LearnoHubFB ➡️Instagram: https://bit.ly/LearnoHubInsta Get Our Videos in Pendrives: Class 12 - https://bit.ly/LHPenDrive12 Post your doubts here: https://www.examfear.com/question/ Join our Telegram Group: LearnoHub - 12: https://t.me/LearnoHub12 About the Teacher: Roshni Mukherjee, the Founder-Educator at LearnoHub has been building this free learning platform since 2011. She has been recognised as one of the 100 Women Achievers of India by the Ministry of Women & Child Development and felicitated by the President of India in 2016. Roshni has been invited by Google to speak at Global Education Symposium 2017 held at Google Headquarters, California. Limca Book of Records also recognized our work. Watch Roshni's Tedx Talk to know more about her journey: https://www.youtube.com/watch?v=v2sW_... #LearnoHubBiology #SabkoSamajhAayega #FREEhaiParBESThai #CBSEClass12Biology Join us and let us together build this Free Learning Platform! We will surely ensure that you enjoy the real learning with us. Copyright © All rights reserved. LearnoHub | ExamFear Education "
