The insects have developed various mouthparts in the course of evolution, depending on their mechanism of food intake. Examine the mouthparts and explain the structures.

Benefits

• Experiment is part of a complete solution set with a total of 50 experiments for all microscopy applications
• With student worksheet, appropriate for all class levels
• With detailed instructor information, incl. sample microscopy image
• Optimized for tight schedules, i.e. minimum preparation time required
• Microscopy solution set specifically designed to include all required accessories
• Content available with matching multimedia files

Most insects possess 1 or 2 pairs of membranous wings. Their venation may differ distinctly. Similarities in the venation pattern indicate a close genetic relationship of the species. Compare the venation pattern of various insect species.

Benefits

• Experiment is part of a complete solution set with a total of 50 experiments for all microscopy applications
• With student worksheet, appropriate for all class levels
• With detailed instructor information, incl. sample microscopy image
• Optimized for tight schedules, i.e. minimum preparation time required
• Microscopy solution set specifically designed to include all required accessories
• Content available with matching multimedia files

Many animals of rather simple structural organization, for example, paramecium or the earthworm, take up oxygen for all vital processes over their entire body surface. In the fishes, numerous skin folds have developed in the course of evolution, the so-called gills. Water flows past this contact surface and the oxygen it carries travels across the branchial membrane into the blood. The fish breathes.

Benefits

• Experiment is part of a complete solution set with a total of 50 experiments for all microscopy applications
• With student worksheet, appropriate for all class levels
• With detailed instructor information, incl. sample microscopy image
• Optimized for tight schedules, i.e. minimum preparation time required
• Microscopy solution set specifically designed to include all required accessories
• Content available with matching multimedia files

Water fleas are not actually fleas but belong to shield shrimps (branchiopods) just like the brine shrimps do.

Benefits

• Experiment is part of a complete solution set with a total of 50 experiments for all microscopy applications
• With student worksheet, appropriate for all class levels
• With detailed instructor information, incl. sample microscopy image
• Optimized for tight schedules, i.e. minimum preparation time required
• Microscopy solution set specifically designed to include all required accessories
• Content available with matching multimedia files

There is a genus of very small crustaceans living in salt lakes. These animals feed on other microscopic organisms such as algae and bacteria. The brine shrimps lay eggs from which larvae develop. These grow up to juvenile crustaceans within a few weeks. When salt lakes dry up most of the organisms dwelling in them perish. But what happens to the eggs? This you shall find out!

Benefits

• Experiment is part of a complete solution set with a total of 50 experiments for all microscopy applications
• With student worksheet, appropriate for all class levels
• With detailed instructor information, incl. sample microscopy image
• Optimized for tight schedules, i.e. minimum preparation time required
• Microscopy solution set specifically designed to include all required accessories
• Content available with matching multimedia files

Tasks

Determine whether crustaceans can develop from the dried-up eggs.

Learning objectives

• Brine shrimp
• Crustaceans

Required Accessories

This experiment requires a balance:

Precision balance, Sartorius ENTRIS® II, 820 g : 10 mg (49303-99)

• Experiment is part of a complete solution set with a total of 50 experiments for all microscopy applications
• With student worksheet, appropriate for all class levels
• With detailed instructor information, incl. sample microscopy image
• Optimized for tight schedules, i.e. minimum preparation time required
• Microscopy solution set specifically designed to include all required accessories
• Content available with matching multimedia files

Feathers give the birds stability and enable flight. The stability, on the one hand, depends on the chemical structure. Feathers consist of the same resistant material as the scales of reptiles, which is β-keratin. On the other hand, the vane constitutes an almost impenetrable surface.

Benefits

• Experiment is part of a complete solution set with a total of 50 experiments for all microscopy applications
• With student worksheet, appropriate for all class levels
• With detailed instructor information, incl. sample microscopy image
• Optimized for tight schedules, i.e. minimum preparation time required
• Microscopy solution set specifically designed to include all required accessories
• Content available with matching multimedia files

Water fleas are not actually fleas but belong to shield shrimps (branchiopods) just like the brine shrimps do.

Benefits

• Experiment is part of a complete solution set with a total of 50 experiments for all microscopy applications
• With student worksheet, appropriate for all class levels
• With detailed instructor information, incl. sample microscopy image
• Optimized for tight schedules, i.e. minimum preparation time required
• Microscopy solution set specifically designed to include all required accessories
• Content available with matching multimedia files

The temperature requirements of animals with regard to their environment differ widely: they vary from temperatures just below 0°C for arctic and antarctic animals to temperatures of around 50°C for desert animals and animals from hot springs. Within these limits many species prefer one range: the preferential temperature. Using their thermoreceptors the animals recognize the temperature which suits them, gather in an area at the corresponding temperature (thermotaxis) and thus show their preferred temperature.

Benefits

• Precise measurement possible with 12 different temperature zones
• Allows to set up a wide temperature range
• In the ring-shaped measurement setup the animals can migrate in both directions at each measurement point
• Experimental setup can also be used for plant growth experiments

Tasks

1. Test the temperature demands of different poikilothermic animal species
2. Produce a temperature gradient between approximately 45°C and 10°C using a ring-shaped temperature organ
3. Record the positions of the individual animals

Learning objectives

• Temperature optimum
• Poikilothermic animals
• Thermotaxis
• Phototaxis
• Thigmotaxis
• Torpor
• Environmental requirements
• Geographical seperation

This model shows the major structures of an animal cell. Different colors are used to allow teachers and students to easily identify the different structures of the cell, such as the nucleus, endoplasmic reticulum, mitochondria, ribosomes, Golgi apparatus, centrioles, lysosomes and fat vacuoles.

Size: 27 x 20 x 44 cm

Weight: 3 kg