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Principle
Representation of the photosynthesis rate of a plant by measuring the oxygen pressure increase, in white and green light as well as in the dark.
Measurement of the photosynthesis rate as a function of light intensity by counting the oxygen bubbles that are released by a water plant.
The cell membrane controls the transport of nutrients and water into the cell as well as the transport of waste products and water out of the cell. This can be passive, i.e. caused by osmotic processes, as well as active. The aim of this experiment is ...
Why are there only a few different kinds of plants in a deciduous forest? Except for having trees that are all approximately of the same height, hardly any other plants grow in a deciduous forest, except for young plants of the same type of trees. Th ...
How does the temperature of the air affect the temperature of the soil in the course of a day?
How suitable are certain soils and plant substrates for the nutrition of plants? This experiment is about measuring the conductivity, which in turn provides information as to which of the examined soils and plant substrates already contain nutrient sa ...
Various types of woodland exhibit different sorts of climate data. Temperature, humidity and lighting conditions do not only depend on meteorological factors but also on the nature of the vegetation. The density of the tree canopy determines how much light can penet ...
Principle and tasks
To investigate the effect of soil temperature on the germination of garden cress (Lepidium sativum). To determine the most favourable value for the germination and growth of cress using a temperature organ.
What yo ...
Transpiration of leaves.
Tasks
What you can learn about
To prepare diagrams to illustrate thetranspiration of plants. To discuss thereasons of the differences of thepressure curve decrease.
Glycolysis (measurement of pressure)
The cell membrane regulates the transport of nutrients and water into the cell, and of waste products and water out of the cell. This can take place passively, e.g. on the basis of osmotic processes (differences in concentration), as well as actively.
Tas ...
The cell membrane regulates the transport of nutrients and water into the cell, and of waste products and water out of the cell. This can take place passively, e.g. on the basis of osmotic processes (differences in concentration), as well as actively. ...
The enzymatic hydrolysis of urea in aqueous solution liberates carbon dioxide and ammonia. The ions of these compounds increase the conductivity of the solution.
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