Potometer Practical
2024年10月19日 · Investigating transpiration rates using a potometer. Environmental factors can be investigated in the following ways: Airflow: Set up a fan or hairdryer. Humidity: Spray water in a plastic bag and wrap around the plant. Light intensity: Change the distance of a light source from the plant. Temperature: Temperature of room (cold room or warm room)
Plant organisation - Edexcel Measuring water uptake - Potometers …
A simple potometer is a piece of capillary tubing to which a plant has been connected. The water uptake is measured by recording the time taken for a bubble in the tube to move a set distance.
Practical - Using a Potometer | OCR Gateway GCSE Biology …
2022年5月22日 · We can investigate the effect of different environmental conditions (such as temperature, humidity, light intensity and wind movement) on the rate of transpiration using a piece of apparatus called a potometer; There are 2 types of potometer:
Osmosis and plant transport (CCEA) Potometer - BBC
A potometer is a piece of apparatus designed to measure water uptake in a leafy shoot. There are 2 types of potometer – the bubble potometer and the weight potometer. Bubble potometer
School Science/Potometer - Wikibooks, open books for an open …
2020年3月24日 · A potometer is a device used for measuring the rate of water uptake of a leafy plant shoot. The main reason for water uptake by a cut shoot is transpiration (evaporation in plants) and is affected by the transpiration stream. By changing the surrounding atmospheric conditions, the effect on transpiration of wind, heat, and humidity can be measured.
A schematic diagram of the potometer assembly.
... potometer, in its simplest form, comprises a sensing tube whose water body is continuous with that of a plant system. The rate of volume uptake by the plant is proportional to a time change...
Potometer - Wikipedia
There are two main types of potometers: the bubble potometer (as detailed below), and the mass potometer. The mass potometer consists of a plant with its root submerged in a beaker. This beaker is then placed on a digital balance; readings can be made to determine the amount of water lost by the plant.
Measuring rate of water uptake by a plant shoot using a potometer
In this activity the rate of water uptake, due to transpiration, by a shoot from a woody plant, is measured by timing how long a bubble takes to move a set distance, in the capillary tube of an h-shaped potometer. Decisions will depend on the availability of suitable potometers.
Measuring water uptake - potometers - How do producers …
The uptake of water can be measured using a potometer. Under normal circumstances, the rate of water uptake gives a measure of the rate of transpiration - this ignores the comparatively small ...
Measuring Transpiration - Pass My Exams
Transpiration can be measured by an instrument called a potometer. The diagram below shows the apparatus set up for a potometer. Vaseline is applied around the rubber bungs to ensure an airtight seal, thus the only water loss from the apparatus is via transpiration.
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