Category Archives: Biologie

Ce que sait une plante (et d’autres choses que vous ne saviez pas sur les plantes)

For centuries we have collectively marveled at plant diversity and form—from Charles Darwin’s early fascination with stems and flowers to Seymour Krelborn’s distorted doting in Little Shop of Horrors. This course intends to present an intriguing and scientifically valid look at how plants themselves experience the world—from the colors they see to the sensations they feel. Highlighting the latest research in genetics and more, we will delve into the inner lives of plants and draw parallels with the human senses to reveal that we have much more in common with sunflowers and oak trees than we may realize. We’ll learn how plants know up from down, how they know when a neighbor has been infested by a group of hungry beetles, and whether they appreciate the music you’ve been playing for them or if they’re just deaf to the sounds around them. We’ll explore definitions of memory and consciousness as they relate to plants in asking whether we can say that plants might even be aware of their surroundings. This highly interdisciplinary course meshes historical studies with cutting edge modern research and will be relevant to all humans who seek their place in nature. This class has three main goals: 1. To introduce you to basic plant biology by exploring plant senses (sight, smell, hearing, touch, taste, balance). 2. To introduce you to biological research and the scientific method. 3. To get the student to question life in general and what defines us as humans.

Sous-titres en Français.

Université de Tel-Aviv

Session : Du 26 octobre au 30 décembre.

The buzz about pesticides

 

Bees, the most important pollinators of our crops, are in trouble. All over the world, their populations are decreasing and scientists want to know why. In this video, Nigel Raine and Richard Gill introduce us to the bumblebees they study at Royal Holloway near London. Their experiments show that two commonly used pesticides affect foraging behaviour and brood development, making bumblebee colonies more likely to fail.

Anatomie

20 vidéos.

  1. Colon et coloscopie
  2. Coeur
  3. Valves cardiaques
  4. Appendice
  5. Vésicule
  6. Vision
  7. Genou
  8. Appareil génital masculin
  9. Appareil génital féminin
  10. Système nerveux
  11. Système nerveux central et périphérique
  12. Moelle spinale
  13. Tronc cérébral et cervelet
  14. Diencéphale
  15. Système nerveux central 1
  16. Hémisphères cérébraux
  17. Système nerveux 2
  18. Vascularisation du névraxe
  19. Message nerveux
  20. Pharynx et larynx