What is the unit used to determine rate of transpiration?
So the correct answer is ‘Potometer’.
Is rate of transpiration directly proportional to the surface area of the leaves?
(1) Rate of transpiration is directly proportional to. the surface area of the leaves. (i) The plants transpire more in high humid. conditions outside the plant.
What are the factors that affect the rate of transpiration?
The rate of transpiration is affected by several factors, including:
- temperature.
- humidity.
- wind speed.
- light intensity.
How do you calculate the surface area of a leaf?
Leaf area (A) can be simply calculated by multiplying the product of leaf length (L) and width (W) by a constant (i.e., the Montgomery parameter; MP).
What is the equation for transpiration?
Energy available for transpiration The energy flux (TRANSP) due to transpiration may now be found: TRANSP = flux i+flux 2+flux 3—flux 4+flux 5. This flux may be converted into a rate of water loss by dividing by the latent heat of vaporization of water LH. TRANSP = Transpiration rate = —=-JJ— mass length”2 time-1.
How do you measure transpiration in a tree?
Five different methods for measuring transpiration, which include gravimetric analysis (control), heat pulse velocity (HPV), time domain reflectometry (TDR), single leaf and whole plant infrared gas-exchange measurements, have been tested on two cultivars (Redcort and Empire) of young apple trees (Malus communis L.).
Which of the following factors show inversely proportional relation with rate of transpiration?
Atmospheric Humidity: The rate of transpiration is roughly inversely proportional to atmospheric humidity.
Which of the following factor is inversely proportional to the rate of transpiration in plants *?
relative humidity
The rate of transpiration is inversely proportional to relative humidity. More the relative humidity less is the transpirate rate.
How does leaf structure affect transpiration?
The thicker the cuticle layer on a leaf surface, the slower the transpiration rate. Cuticle thickness varies widely among plant species. In general, plants from hot, dry climates have thicker cuticles than plants from cool, moist climates.
Does surface area affect photosynthesis?
1 Answer. Ernest Z. Surface area to volume ratio (SA:V) is important to photosynthesis because plants must balance their need for more surface area to collect sunlight with the fragile nature of the leaves and the rate of water loss.
What is leaf area ratio?
leaf-area ratio The photosynthetic surface area per unit dry weight of a plant. It is a measure of the efficiency with which a plant deploys its photosynthetic resources. Typically, it is increased by low light intensities.
Why does a potometer not measure transpiration?
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.
How does leaf fall affect the rate of transpiration?
If leaf area is more, transpiration is faster. However, the rate of transpiration per unit area is more in smaller leaves than in larger leaves due to higher number of stomata in the small leaf.
Which factor that does not affect the rate of transpiration?
Chlorophyll content of leaves does not directly affect rate of transpiration.
Why is leaf surface area important?
The surface area of leaves plays an important role in plant growth and photosynthesis. Photosynthesis is the process by which plants transform light (light energy) into food (chemical energy). Light, water, and carbon dioxide gas are all necessary for photosynthesis to occur.
Why is it important for leaves to have a large surface area?
A leaf usually has a large surface area, so that it can absorb a lot of light. Its top surface is protected from water loss, disease and weather damage by a waxy layer. The upper part of the leaf is where the light falls, and it contains a type of cell called a palisade cell. This is adapted to absorb a lot of light.
How does leaf surface area affect photosynthesis?
Larger leaf size has a broader surface area with more chloroplasts, absorbs more light from the sun and more number of stomata present on the surface of the leaves, which play a crucial role in gaseous exchange during the process of photosynthesis.
What are the units for specific leaf area?
Typical units are g.m−2 for LMA, µm for LTh and g.ml−1 for LD. Both SLA and LMA are frequently used in plant ecology and biology. SLA is one of the components in plant growth analysis, and mathematically scales positively and linearly with the relative growth rate of a plant.
What is the formula for transpiration?
6. Energy available for transpiration The energy flux (TRANSP) due to transpiration may now be found: TRANSP = flux i+flux 2+flux 3—flux 4+flux 5. This flux may be converted into a rate of water loss by dividing by the latent heat of vaporization of water LH.
How do you calculate water loss from a leafy shoot?
The potometer measures the amount of water lost from a leafy shoot by monitoring the rate at which an air bubble moves along the narrow tube as the leafy shoot sucks up water to replace the water lost by the transpiration of the plant.
How does leaf size affect the rate of transpiration?
Some plants possess stomata that are sunken into the leaf surface, dramatically increasing the boundary layer and slowing transpiration. Boundary layers increase as leaf size increases, reducing rates of transpiration as well.
Does transpiration occur through the leaves of a plant?
Water appeared on the side of the bell jar, this shows that transpiration does occur through the leaves of a plant. For the method we are going to use to see if surface area affects the size of a leaf we are going make sure that we keep the leaves in the same conditions at all time, because light, wind or temperature might affect it.
Does the rate of transpiration depend on the number of stomatal pores?
Experimental hypothesis Taking into account the relative background scientific Information, it is expected to be proven that the rate of transpiration from a leaf of a plant is proportional to the number of stomatal pores on the surface of that leaf.
Does precipitation level of climatic region affect transpiration?
TESTABLE QUESTION Can the precipitation level of the climatic region from which a plant comes from affect its transpiration rate, (amount of water the plant loses in the form of vapor through pores on the plant.)? TRANSPIRATION For a plant to stay healthy, fluids (like water), need to reach all parts of the plant.