In this lesson, our instructor Bryan Cardella gives an introduction to a closer look on lichens. He discusses the various forms of lichen, symbiosis, reproduction, energy use, lichens in North American Biomes, response to the environment, and human use of lichens.
Lichens are a composite organism made of a fungus with algae and/or cyanobacteria, they can live almost anywhere, and they’re related to APES in many ways
Forms of lichens include crustose, foliose, fruticose, etc. and they come in a wide variety of colors
Lichens are symbiotic (and could be considered mutualism, commensalism, or parasitism)!
Lichen reproduction is generally asexual but the fungal part can reproduce sexually. There are spore-containing bodies that grow from the thalli
Lichens get energy through photosynthesis, and they also soak up water and mineral from the environment. They have an incredible temperature tolerance. Organisms that are known to eat lichens include ruminants and millipedes
Lichens are efficient accumulators of minerals and could be used to monitor pollution levels in the atmosphere
Their absorptive abilities also have been use to locate ore deposits. They also can be dependent on old-growth forests
Human have used lichens for food, clothing, dyes, perfumes, and medicines/poisons
Lichens: A Closer Look
Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.
This book includes a comprehensive review of the key AP Environmental Science concepts and targeted strategies for acing every section of the exam. Additionally, the book includes two full length practice tests with full answer explanations.
This book is an updated manual that offers a brand-new diagnostic test to pinpoint the test taker's strengths and weak areas, two full-length practice exams with all questions answered and explained, a detailed review of all test topics, supplemented with practice questions and quizzes with answers, an overview of the test plus helpful test-taking strategies, and hundreds of diagrams and illustrations .