Answer:
The plant hormone ABA or abscisic acid is help in regulating the guard cells via its effect on osmotically changes in turgor. ABA inhibits the proton ATPase, slow down the anion channel and other influences that result in depolarization of membrane potential guard cells that leads to efflux of the K+ closure of stomatal.
Plants have feedback mechanisms that have evolved as well. In stress conditions such as drought these mechanisms involve in closing the guard cells in order to water loss through transpiration.
Answer:
Intestine is the lower part of the alimentary canal from the end of the stomach to the anus.
Explanation:
Answer: Older fossils have been found and extinct/or animals from older times have had similar characteristics to animals found closer to our time/or the present.
