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Evolution
Of all mammals existing today, the primates have the oldest phylogenetic tree. This film shows on the basis of extant species of the order of primates, which we humans also belong to, the phylogenetic tendencies in evolution from the treeshrew to prosimians, monkeys and apes to the genus homo. Special emphasis is laid on the visible outward characteristics of the skull and its sense organs, changes in the position of the spinal column as well as the development of extremities and their adaptation to various habitats. Changes in the anatomy of the skull, the development of the eye socket and also the shifting of the eyes from the sides to the front position, the dental structure and development of the jaw bones and the changing proportions of the mandible skeleton and the brain case are demonstrated on genuine skulls. The film analyses in detail the evolutionary tendencies of primates and convincingly answers the question on the origins of their development.
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Ecosystem Lake
Lakes are stagnant waters that look quite peaceful to us. But the quiet is deceptive: above and below the water surface, life is anything but peaceful. Phytoplankton and zooplankton are eaten by small predators such as polyps or hydrachnidiae. Toebiters, dragonfly and beetle larvae are food for the water scorpion. As every animal feeds on different prey and in turn is eaten by various predators, a food web is created. The amount and variety of the lake inhabitants depends on the concentration of nutrients. In clear lakes, aquatic plants may spread down to a depth of 10 metres. Different zones with particular plant species are clearly visible. Also animals above the water profit from the rich underwater life, for example the waterfowl. Ever since the lake was formed, wind and waves have been carrying dead plants and animals to the shore, where they have sunk down and decomposed. At the same speed at which the lakeside grows, the water surface of the lake shrinks. With its extensive additional material the didactic DVD is ideally suited for use in the classroom.
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Organic Farm
That is how we imagine an ideal farm. Free-range hens, cows are being driven from the pasture into the stable, a cat is straying across the yard, the dog is watching over everything... This farm of farmer Ponzaun, however, exists today only because he need not subsist on the profit he makes from selling the products grown on his farm. The main income on the Ponzaun farm derives from the guests who want to experience once again what life was like on a farm in former times. During their holiday on the farm the children and the grown-ups want to participate in the daily life that is determined by the care for and life together with the animals and nature.
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Körpersprache
Körpersprache – jeder benutzt sie, aber meistens ist uns das gar nicht bewusst.
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Angst und Phobien
Das Herz klopft, der Puls geht schneller, Schweiß bricht aus: Angst gehört zur „Grundausstattung“ unserer Gefühle, warnt uns vor gefährlichen Situationen und setzt unseren Körper in Alarmbereitschaft. So können wir instinktiv richtig reagieren, ohne groß nachzudenken. Angst ist ein Urinstinkt, der uns schützen soll.
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Enzymes
Almost every biochemical reaction in living organisms is regulated and controlled by enzymes. Without enzymes we could not breathe, digest food and the hereditary information in our cells could not be repaired and copied.
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Slow Worm
The slow worm is a small, completely harmless lizard, which – contrary to its German name “Blindschleiche”– is perfectly able to see and is often mistaken for a snake because it has no legs and an elongated body. The German name is presumably derived from the Old High German word “Plintslicho”, which means “blinding sneaker”. This probably refers to the pretty, shining skin surface of the slow worm.
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The Ear
Large or small, narrow or broad, round or angular. Our ears may be of a variety of shapes.
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Reptiles
This DVD offers a clearly structured overview over reptiles with an emphasis on the following aspects: The origin of reptiles is proven by fossil finds from all over the world. The skeletons are proof that reptiles were not confined to life on land but were also adapted to water and the air. The typical common characteristics of reptiles, such as the coat of scales and a poikilothermic body temperature, as well as the extremely different appearances of poisonous snakes and constrictors, turtles, lizards and crocodiles are discussed in detail. The different methods of finding food both as a herbivore or as an ambush predator with the use of poison or with the help of a pit organ are shown. The “invention” of the amnion made the reptiles’ reproduction independent from water and enab- led them to lay their eggs on land.
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The Eurasian Eagle Owl
With a body length of 60 to 75 cm and a wingspan of up to 170 cm, the Eurasian eagle owl is the largest owl in the world. It is also referred to as “king of the night skies”. After being hunted and almost exterminated by humans, the population of the Eurasian eagle owl has started rising again since the middle of the 20th century. Nevertheless, according to experts, it is not secured yet. Destroyed habitats and disturbances at the breeding sites, for instance by climbers, as well as dangers from power poles still threaten the population of the Eurasian eagle owl today.
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Blossoms
In impressive pictures several interesting biological topics are conveyed by this film: knowledge of the structure of blossoms, their variety of forms as well as significance and purpose of their colours and scents. Thus it becomes comprehensible why blossoms are so differently structured, how self pollination is avoided and which evolutionary achievement is behind the symbiotic interaction between blossoms and pollinators. Pollination is a “deal“: the plant offers the insects nectar in exchange for the transport of the pollen. Prerequisite for this is the mutual adaptation process of the blossom to the mouthparts of the insect and vice versa. That cheating goes on during this “business relationship” between plant and animal is illustrated with the example of flower mimesis. The perfect way in which blossoms succeed in attracting insects without offering them nectar in return is another highlight of this film. Together with the extensive accompanying material the DVD is perfectly suited for use in the classroom.
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