MediumNEET TEST
+4 / -1
In an experimental setup, four sets of same plant species are treated as follows: Set P: Shoot tip is removed (Decapitation). Set Q: Shoot tip is intact, but a high concentration of Cytokinin is applied directly to the lateral buds. Set R: Shoot tip is removed, and an agar block containing Abscisic Acid (ABA) is placed on the cut stump. Set S: Shoot tip is intact, and the plant is kept in a water-stressed environment. Based on the physiological effects of PGRs, in which sets would you expect to see the promotion of lateral bud growth (bushy growth)?
A
P and Q only
B
P, Q, and R
C
Q and S only
D
P and S only
Explanation
Removing the shoot tip (source of Auxin) removes apical dominance, allowing lateral buds to grow. Cytokinins help overcome the apical dominance. Applying it to lateral buds will trigger growth even if the tip is present. ABA is a growth inhibitor and promotes dormancy; it would not promote lateral growth, rather it would further suppress activity. Water stress increases ABA levels (stress hormone), which leads to stomatal closure and growth inhibition, not lateral branching.
Previous
Given below are two statements: one is labelled as Assertion (A) and the other i
NextThe compound phosphoenol pyruvate is;
More from MOCK TEST-1
Easy
Which of the following is not a nitrogenous base?
EasyWhich of the following is the largest gland in human body?
EasyWhich of the following is a vector-borne disease?
EasyWhich of the following is not a function of the liver?
EasyWhich of the following is the site of protein synthesis?
EasyWhich of the following is responsible for opening and closing of stomata?
Practice NEET TEST Exams
Full-length mock tests with detailed analytics, rank, and percentile.
Browse Exams