Gibberellin. Hint: An antitranspirant hormone reduces the transpiration process by closing the stomata during the water stress conditions. So, this hormone is also known as a stress hormone in plants.
Which hormone is known as Antitranspirant?
Abscisic acid is anti-transpirant hormone. It stimulates the closure of stomata in the epidermis and increases the tolerance of plants to various kind of stresses. It is also called stress hormone.
Is abscisic acid an Antitranspirant?
Antitranspirants are compounds applied to the leaves of plants to reduce transpiration. … Metabolic inhibitors reduce the stomatal opening and increase the leaf resistance to water vapour diffusion without affecting carbon dioxide uptake. Examples include phenylmercury acetate, abscisic acid (ABA), and aspirin.
Which hormone is called Antitranspirant and why?
Abscisic acid is a naturally occurring plant hormone. It stimulates the closure of stomata in the epidermis during water stress conditions. So, water loss through the stomata by transpiration is reduced and it is therefore known as antitranspirant hormone.
Why is ABA called an Antitranspirant?
Solution. ABA can cause efflux of K+ ions from the guard cells and result in closure of stomata. So, it is known as an anti-transpirant.
What is the main function of anti transparent?
Antitranspirants are substances applied to the plants for the purpose of reducing transpiration (water loss) without causing a significant effect on other plant processes, such as photosynthesis & growth. They have been used with some success in horticulture, especially in the ornamental industry.
What is the main function of anti Transpirant?
Antitranspirants are chemical compounds, their role is to practice plants of hardening to stress, as a method of reducing the impact of drought due to salinity. Reducing the transpiration can play a useful role in this respect by preventing the luxurious loss of water to atmosphere via stomata.
Is aspirin anti Transpirant?
Antitranspirants are compounds applied to the leaves of plants to reduce transpiration. These reduce the stomatal opening and increase the leaf resistance to water vapour diffusion without affecting carbon dioxide uptake. Examples include phenylmercury acetate, abscisic acid (ABA), and aspirin.
How was abscisic acid discovered?
The discovery of abscisic acid (ABA) was the result of an investigation into the hormonal factors affecting the abscission of cotton fruit. It was first detected as a growth inhibitor in diffusates from the young fruit. Increased levels of the inhibitor were correlated with the abscission of the fruit.
What is a Transpirant?
Anti-transpirants are liquids that you spray on your plants to shield them from moisture loss. Once the product is sprayed on your plants the spray dries to a clear transparent and flexible protective coating without interfering with plant growth, osmosis or photosynthesis.
What does anti Transpirant mean?
: a substance (such as pine oil) that is usually sprayed on plant surfaces (as of the leaves and stems) to reduce transpiration and inhibit water loss.
Is co2 anti Transpirant?
In some plants, basic breathing over leaves causes stomatal closure. In closed stomata external carbon dioxide has no effect.
Which chemical can be used as Antitranspirant in plants?
Phenyl mercuric acetate is an important antitranspirant and reduces transpiration in plants. Cobalt chloride is a chemical used to test transpiration in plants, because colour of cobalt chloride is different in hydrated and unhydrated forms.
What is ABA known as Antitranspirant?
Antitranspirants are compounds applied to the leaves of plants to reduce transpiration. Some examples are phenylmercury acetate, abscisic acid (ABA), and aspirin (acetyl salicylic acid). ABA is a well-known antitranspirant. Thus, the correct answer is an option (D).
Which chemical is used to detect transpiration comparatively?
Cobalt chloride changes its colour on exposure to water. So, a paper dipped in cobalt chloride can be placed to both the upper and lower surfaces of a leaf as a qualitative test for transpiration.
What is the full form of ABA?
ABA – Applied Behavior Analysis.