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Science


Branches on the Tree of Life


Behaviors and relationships in the microscopic world
Grade Levels:
7-12
Length:
28 minutes
Taping Rights:
School year
MARC Record:
Downloadable
Program Schedule:
See Below

This series is a collection of short segments that illustrate the behavior and ecological interactions of microorganisms. The series features stunning photography, graphic animations, and time-lapse microscopy to explore plants, animals, and processes of the microscopic world.

Program of Studies: Biological Science: Unity and Diversity, Biological Change
Unifying Concepts: Energy Transformations, Interdependence


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2011/12 KETKY Program Schedule

101. The Biology of Plants
Clear graphic animation is used to describe the molecular-level mechanisms of photosynthesis. Major plant groups are featured in this program, including mosses, liverworts, ferns, horsetails, and the seed plants (gymnosperms and flowering plants). This is a good general introduction to the members of the green kingdom and their life cycles.
102. The Biology of Sponges
In spite of their simple nature, sponges are actually one of the most fascinating animal phyla, when viewed in developmental, ecological, and evolutionary terms. Through animations and timelapse microscopy, this program clarifies the structure, function, classification, and ecological roles of sponges.
103. The Biology of the Protists
The term "protist" covers a wide range of microscopic organisms formerly clumped into "Kingdom Protista." New molecular analyses show that the protistan lines of evolution go so far back in time they can be considered as different kingdoms of life. Through stunning photography of living protists, students are introduced to amoebas, flagellates, algae, and the elegant ciliated protists in ten learning modules.
104. The Biology of Viruses
This program describes the discovery of viruses and their structure, how viruses are studied, how they infect their hosts, and how they replicate.
105. The Biology of Bacteria
This program uses compelling microscopy of living bacteria to examine their structure, physiology, behavior, and the vital roles these microbes play in the biosphere, including oxygen production (cyanobacteria), decomposition, nitrogen fixation, and as parasites as well as helpful symbionts.
106. The Biology of Algae
This program explores the diversity, structure, ecological roles, and modern classification of vital primary photosynthetic producers.
107. Fungi
This program explores the structure, life cycles, ecology, classification, and evolutionary relationships of four major lines of fungi: Chytrids, Zygomycetes (various molds), Ascomycetes (yeasts, cup fungi, and most lichens), and Basidiomycetes (rusts and mushrooms).
108. The Light Microscope: Window on the Microcosm
This program demonstrates techniques for using a student microscope to achieve spectacular images. Emphasis is on correct lighting procedures and the techniques required for viewing living cells.
109. The Biology of Cnidarians
The program begins with a remarkable series of observations on Hydra including: habitat, structure, feeding, nematocyst discharge, locomotion (by looping), and its sexual and asexual reproductive strategies. Obelia illustrates the two-stage life cycle found in many cnidarians. Examining the biology of jellyfish (class Scyphozoa), sea anemones, and corals (class Anthozoa) rounds out our treatment of phylum Cnidaria.
110. The Biology of Flatworms
This program shows the structure, behavior, and life cycles of planarians and their free-living relatives (class Turbellaria). It illustrates the bizarre life cycles of flukes (class Trematoda) and tapeworms (class Cestoda) with detailed animations and revealing images of these parasites in action.
111. Rotifers and Nematodes
Planktonic rotifers have special adaptations for open water life. Nematodes (round-worms) include a number of important human parasites, seldom seen but easily found. Tree moss, leaf litter, and compost piles swarm with nematodes.
112. Annelids
This program explores the three classes of annelids: Class Polychaeta (feeding, locomotion, and larval stages), Class Oligochaeta (lifestyles, feeding adaptations, and anatomy of freshwater oligochaetes and earth worms), and Class Hirudinea (leeches, crayfish, and worms show adaptations for commensal, parasitic, and scavenger lifestyles).
113. The Biology of Echinoderms
Echinoderms are one branch of the deuterostome line of animal evolution, the branch to which Chordates also belong. Narrated modules cover phylum characteristics and key biological details for five classes: sea stars, brittle stars and basket stars, sea urchins and sand dollars (including developmental stages), sea cucumbers, and crinoids (feather stars).
114. Molluscs
Phylum Mollusca is the second most diverse phylum of animals, with over 100,000 known species. First examined are the basic characteristics of the phylum - a soft body, muscular foot, mantle cavity with gill, and hard calcified shell. The four most familiar classes of molluscs (chitons; gastropods, bivalves, and cephalopods) are studied in depth.
115. The Biology of Chordates
This program explores how Phylum Chordata evolved and how the group is unified by four characteristic structures: a hollow dorsal nerve chord, a supportive notochord, gill slits, and a post-anal tail. Key milestones in vertebrate evolution included improvements in swimming and feeding, the evolution of paired fins and a primitive lung, movement onto the land, and the amniotic egg.
116. Arthropods
This program covers phylum characteristics and three major arthropod classes: Crustaceans (copepods, waterfleas, branchiopods, decapods, and barnacles), Chelicerates (scorpions, pseudoscorpions, spiders, ticks, and mites), Uniramians (centipedes, millipedes, and insects).

The schedule listed here includes only airings on the KETKY channel. See the complete Branches on the Tree of Life broadcast schedule for airings on all KET channels.



Kentucky Academic Expectations

This program relates to the following Kentucky Academic Expectations.

Kentucky schools may tape and retain programs according to the rights listed above. For further information, contact the KET Education Division.

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Last Updated: Wednesday, 08-Feb-2012 03:40:32 EST