Question
$\text{ABA}$ is described as an antitranspirant.
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Answer
$1. \ \text{ABA}$ is a growth inhibiting hormone.
$2.\ \text{ABA}$ is responsible for causing efflux of $K^+$ ions from guard cells of stomata.
$3.$ As a result of this, osmotic changes occur and guard cells become flaccid resulting in closure of stomata.
$4.$ Transpiration mainly occurs through open stomata and due to closure the activity is checked. Hence it is described as antitranspirant.
$2.\ \text{ABA}$ is responsible for causing efflux of $K^+$ ions from guard cells of stomata.
$3.$ As a result of this, osmotic changes occur and guard cells become flaccid resulting in closure of stomata.
$4.$ Transpiration mainly occurs through open stomata and due to closure the activity is checked. Hence it is described as antitranspirant.
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