Which of the following is produced during water stress and causes closure of stomata?
A. Abscisic acid
B. Cytokinin
C. Auxin
D. GA3
Answer: Option A
Solution(By Examveda Team)
Abscisic acid is produced during water stress and causes the closure of stomata.Abscisic acid (ABA) is a plant hormone involved in the response of plants to reduced water availability.
Reduction of guard cell turgor by ABA diminishes the aperture of the stomatal pore and thereby contributes to the ability of the plant to conserve water during periods of drought.
Related Questions on Genetics and Plant Breeding
Genetic code was discovered by
A. Khorana and Methaei
B. Flemming and Methaei
C. Holley, Nirenberg and Khorana
D. Holley and Nirenberg
Progeny of breeder seed is referred to as
A. Breeder seed
B. Nucleus seed
C. Foundation seed
D. Certified seed
Molecular basis of organ differentiation depends on the modulation in transcription by
A. RNA pol
B. Transcription factor
C. Anticodon
D. All of the above
The phenomenon of linkage was first observed by
A. Bateson and Punnet
B. Nilson
C. Hugo de Vries
D. Mendel
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