In this lesson our instructor talks about fungi. First she gives an introduction to Fungi and its role in the environment. Then she talks about life cycle of fungi, chytridiomycota, zygomycota, and basidiomycota. She discusses ascomycota. Four examples videos round up this lesson.
Fungi are unicellular or
multicellular eukaryotes with cell walls containing chitin.
Multicellular fungi are
composed of microscopic thread-like structures called hyphae.
Adjacent cells are separated from each other by septa. Coenocytic
fungi lack septa and are multinucleated. Groups of hyphae form a
mycelium, which is a visible structure.
Fungi play an important role in
the environment. As decomposers, they break down organic materials,
releasing the organic components for reuse.
Certain fungi form mycorrhizae
in association with the roots of plants. This symbiotic relationship
provides the plant with increased surface area for the absorption of
water and minerals and provides the fungus with a source of
Lichen are the result of a
symbiotic relationship between fungi and either cyanobacteria or
green algae. Lichen can survive in extreme conditions and are one of
the first colonizers of a new area.
Plasmogamy is the fusion of the
cytoplasm of two cells, without fusion of the two nuclei. Karyogamy
is the fusion of the nuclei and may occur long after plasmogamy in
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.
The book and CD package include three full length practice exams that are presented with all questions answered and explained. The author also presents detailed reviews of all test topics and includes multiple-choice and free-response questions with answers at the end of each topic's chapter.
This book has a great topic-by topic breakdown of the 14 must-know principles with sample questions and answers for each of the subjects. Laboratory Review includes a focused review of all 12 AP laboratory exercises. Included in this is 2 full length practice tests that stimulate the actual test along with answers and complete explanations.
This book includes a comprehensive biology test topic review, covering everything from photosynthesis to genetics to evolution. Cracking the AP Biology also includes testing strategies for the grid-in and essay section, great guidance on writing a high-scoring essay, and two full length practice exams with detailed explanations.