In this lesson our instructor talks about seedless plants. First she discusses origin and classification of plants. Then she talks about alternation of generations, bryrophytes, moss life cycle, and seedless vascular plants. Near the end, she discusses seven adaptations to life on land for plants. Four complete example videos round up this lesson.
Plants are multicellular
eukaryotes and photosynthetic autotrophs. Plants evolved from
ancestral green algae and exhibit numerous adaptations to life on
Plants are divided into two
groups: nonvascular (bryophytes) and vascular (tracheophytes). In
vascular plants the tube-like xylem and phloem transport water,
minerals and nutrients.
The vascular plants are divided
into the seedless vascular plants and the seed plants. The two
groups of seed plants are the gymnosperms and the angiosperms
Bryophytes are non-vascular
plants such as mosses and liverworts. They lack true roots, leaves
In bryophytes the gametophyte
stage is dominant. The sporophyte generation is dependent on the
Ferns are an example of a
seedless vascular plant. They inhabit moist environments, allowing
the flagellated sperm to swim to the archegonia where fertilization
Most seedless plants are
homosporous; they produce a single type of spore that develops into
a gametophyte capable of producing both male and female gametes.
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.