Plant Physiology and Biochemistry

Hill reaction

Osmosis

Transpiration

Water balance

Carbon dioxide release of plants through respiration

Transpiration of leaves

Principle

To prepare and analyse diagrams to illustrate the transpiration of plants, depending on different environmental conditions, using a wireless data acquisition system:

Photosynthesis (O2 pressure measurement) (with Cobra4)

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.

Photosynthesis (bubble-counting-method)

Principle

Measurement of the photosynthesis rate as a function of light intensity by counting the oxygen bubbles
that are released by a water plant.

Ionic permeability of the cell membrane

Principle

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 ...

Changes of the light conditions in a deciduous forest

Principle

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 ...

Effect of the soil temperature on the germination and growth of higher plants

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 you can learn about

Transpiration of leaves (with the Cobra3 Basic-Unit)

Principle

Transpiration of leaves.

Tasks

1. To prepare diagrams to illustrate the transpiration of plants.
2. To discuss the reasons of the differences of the pressure curve decrease.

What you can learn about

...

Glycolysis (pressure measurement, with Cobra3 Basic-Unit)

Principle

Glycolysis (measurement of pressure)

Tasks

1. To identify glycolysis by measuring the production of Co2 and plotting graphs.
2. To investigate the influence of temperature and pH on metabolic activity.

What you ...

Ionic permeability of the cell membrane (with the Cobra3 Basic-Unit)

Principle

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 ...

Ionic permeability of the cell membrane (with the Cobra3 Chem-Unit)

Principle

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 ...