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The phylum Mollusca is filled
with wonderfully adapted soft-bodied creatures
that make up four major classes. Class
Polyplacophora (with detailed observations on
chitons), Class Gastropoda (snails, limpets,
nudibranchs, and slugs), Class Pelecypoda
(clams and mussels), and Class Cephalopoda
(squid and octopus). In each group the
emphasis is on: structure, behaviour, larval
development, and the kinds of adaptations that
allow these amazing creatures to live in
virtually all aquatic habitats. (2001) |
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They have spiny skins, internal skeletons and
elaborate hydraulic systems used in locomotion
and food getting - and they all live in the
sea. Examining echinoderm life-styles shows
that seastars (Class Asteroidea) are
predators, brittle stars and basket stars
(Class Ophiuroidea) are detritus feeders,
urchins and sand dollars (Class Echinoidea)
are herbivores, sea cucumbers (Class
Holothuoidea) feed on detritus and plankton.
(2000)
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Flatworms, with their three clearly defined
cell layers and bilateral symmetry, represent
an important advance in early animal
evolution. This program provides detailed
observations on structure, behaviour and life
cycles of planarians and other free-living
flatworms, some so small they can only be
studied with a microscope (Class Turbellaria).
It examines the bizarre life cycles of flukes
(Class Trematoda) and tapeworms (Class
Cestoda) with revealing shots of these
parasites at home in the organs of their
vertebrate hosts. (2001). |
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The program begins with an
in-depth study of Hydra; its feeding
methods, stinging cells, reproduction by
budding, and its sex life. Obelia
illustrates a two - stage cnidarian life
cycle, with asexually-reproducing polyps and
free swimming sexual medusae, a
characteristics shared by most members of
Class Hydrazoa. The beautiful jellyfish of
Class Scyphozoa pulse or drift through the
open sea. Members of Class Anthozoa, sea
anemones, hug the intertidal rocks trapping
crabs and other small animals. Corals, their
warm sea relatives, create one of the oldest
and richest ecosystems on earth - the coral
reef. (1998)
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The conversion of light and energy into chemical energy by photosynthesis.
The gas exchange system in the leaf. Leaf types. The transport of
assimilates from the leaf. |
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Structure of the stamen and anther. Pollination. Development of the zygote and fate of floral
structures in fruit. The importance of sexual reproduction in terms of adaptation and diversity. |
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This tape presents a series of field trips in aquatic
micro-space where students learn to recognise the common forms of
micro-life, and explore their ecological relationships. Includes the
following:
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About the Small Life of Wetlands
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What to look for in weedy shallows: Hydras, brown
and green, Dugesia (Planaria), A predatory flatworm, Rotifers, Stylaria
and Chaetogaster, Copepods and Amphipods, Insects, Bryozoans,
Micro-algae, Vorticella and Stentor, Amoebas, Heliozoans.
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What to look for in open water: Open water
environment, Daphnia, Other Planktonic arthropods, Planktonic rotifers,
Volvox and its relatives. -
What to look for in bottom detrius: The bottom
environment, Tubifex, Rat-tail maggots, Ostracods, Bacteria, Flagellated
protists, Ciliated protists, Gastrotriches, nematodes, and water bears.
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Other wetlands habitats: Vernal Pools -
Picture key identifications (still frames):
Identifying protozoans, Identifying algae, Identifying rotifers,
Identifying other micro-invertebrates.
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Provides 28 video modules that utilise the sea
shore to focus on basic concepts of biology. This program makes a fine
introduction to the major kinds of invertebrate animals.
Conditions on the Seashore
Introduction to Life at the Sea’s
Edge (01:29)
Tides (01:16)
Hazards: Wave Shock and Abrasion (00:41)
Hazards: Fresh Water, Temperature and
Drying (00:36)
Competition for Space (01:07)
Production on the Shore (00:35)
Food: Plankton and Detritus (01:21)
Adaptations for Intertidal Life
Adaptations for Wave Shock (01:20)
Defence: Stinging Cells, Chemicals and
Warning Coloration (02:26)
Defensive Structures (01:02)
Defence: Escape Responses (01:40)
Feeding: Filtration (00:53)
Feeding on Detritus (00:54)
Feeding: Rasping and Grazing (00:37)
Feeding: Predation and the Role Of
Chemicals (01:02)
Symbiosis (00:28)
Reproduction: Asexual Reproduction (00:35)
Reproduction: Fertilization (01:05)
Reproduction: Echinoderm Development
(01:06)
Reproduction: Planktonic Larvae (01:12)
Life Cycles and Parental Investment
(01:12)
Seashore Habitats and Inhabitants
Intertidal Zonation (01:34)
Rocky Shores: High Intertidal Zone (00:56)
Rocky Shores: Mid Intertidal Zone (01:19)
Rocky Shores: Low Intertidal Zone (01:03)
Sandy Beaches and the Meiofauna (01:37)
Mudflats and Estuaries (02:16)
Docks and Pilings (01:19)
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The Protists |
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DVD - 20 minutes |
Shipped in 10 days |
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PAL Video - 20
minutes |
Shipped in 28 days |
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The goal of this
program is to show a representative sample of
the great diversity of protists, and to show
why they need a new classification reflecting
our growing understanding of their long
evolutionary history. The protists shown can
be found in habitats such as: roadside
puddles, park duck ponds, aquariums, birdbaths
and in the gut of termites. We hope that these
observations will encourage students to
collect pond water samples and see for
themselves this amazing hidden world. 2003.
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Sponges are one
of the more colourful and abundant groups of
animals, yet they are generally poorly known
by students of biology. One reason for this is
the difficulty of observing anatomy and behaviour
in these animals - features that exist at the
microscopic level, and processes that take
place over extended periods of time. This
program reveals many of the difficult
conceptual aspects of sponge biology through
microscopy, animation, and time-lapse
microscope photography. 2003.
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The term "algae" is a catch-all for
several evolutionary lines of photosynthetic
organisms: Red Algae (plastids with
chlorophyll A), Brown Algae (with chlorophyll
A and C), and Green Algae (Chlorophyll A and
B). These photosynthetic organisms play vital
roles in aquatic and marine ecosystems,
providing oxygen, food and shelter for vast
communities of living things. |
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The Biology of Plants |
| PAL Video -
18 minutes |
Shipped in 28
days |
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| NTSC
Video - 18 minutes |
Shipped in 10 days |
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Clear graphics and succinct narration describe
the molecular level mechanisms of
photosynthesis. The taxonomy section
introduces the nonvascular plants (mosses and
liverworts), primitive vascular plants (ferns
and horsetails), gymnosperms and flowering
plants - with emphasis on life cycles in each
group; a good general introduction to the
green kingdom. |
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