How do you measure the rate of transpiration in an experiment?
The rate of transpiration can be calculated by measuring the distance travelled by an air bubble in a capillary tube over a given time. The faster the bubble moves, the greater the rate of water uptake – and so the greater the assumed rate of transpiration.
What factors affect the transpiration rate in plants Virtual Lab?
To measure the rate of transpiration we use a piece of equipment called a potometer. A potometer measures how factors such as light, temperature, humidity, light intensity and wind will affect the rate of transpiration. The main type of potometer is the ‘bubble’ potometer shown in Figure 5.19.
What is weighing method of transpiration?
Complete answer:Weighing method is a method to check transpiration in which a small lightweight potted plant can be weighed before and after the end of a certain period of time. The soil surface and the pot should be fully covered to prevent evaporation from the surfaces other than the plant.
Why is potometer not accurate?
Limitations. The potometer does not measure the rate of transpiration accurately because not all of the water that is taken by the plant is used for transpiration (water taken might be used for photosynthesis or by the cells to maintain turgidity). The potometer measures the rate of uptake of water.
What is Ganong potometer?
A potometer is a device, which is used to measure water uptake by shoot during transpiration. It is also known as transpirometer. The Ganong’s potometer is used to measure the transpiration rate in a laboratory. A reservoir is connected to the horizontal bar to store water. …
What factors affect transpiration rate?
The rate of transpiration is affected by several factors, including:
- temperature.
- humidity.
- wind speed.
- light intensity.
What affects transpiration rate?
The number and size of leaves, the thickness of their cuticles and the number of stomata are all adaptations that affect the rate of transpiration in plants. The light intensity, temperature, humidity, wind and water supply will all affect the transpiration rate.
How do you solve transpiration?
Antitranspirants materials or chemicals can be used, which decrease the water loss from plant leaves by reducing the size and number of stomata. Nearly 99 per cent of the water absorbed by the plant is lost in transpiration.
How do I calculate the rate of transpiration?
The rate of transpiration can be calculated by measuring the distance travelled by an air bubble in a capillary tube over a given time. The faster the bubble moves, the greater the rate of water uptake – and so the greater the assumed rate of transpiration.
What will reduce rate of transpiration?
Leaves are the main organ of transpiration. Therefore, any decease in leaf surface area will reduce transpiration and conserve water absorbed by roots. Many grasses roll up their leaves during dry condition, thus exposing less surface to the air, thereby lowering the rate of transpiration.
How to find transpiration rate?
The rate of transpiration can be calculated by measuring the distance travelled by an air bubble in a capillary tube over a given time. The faster the bubble moves, the greater the rate of water uptake – and so the greater the assumed rate of transpiration.
What instrument measures the rate of transpiration?
To measure the rate of transpiration we use a piece of equipment called a potometer. A potometer measures how factors such as light, temperature, humidity, light intensity and wind will affect the rate of transpiration. The main type of potometer is the ‘bubble’ potometer shown in the figure below.