Plant Growth and Development Question 25
25. The pineapple which under natural conditions is difficult to blossom has been made to produce fruits throughout the year by application of
[NEET Kar. 2013]
(a) IAA, IBA
(b) NAA, 2, 4-D
(c) Phenyl acetic acid
(d) Cytokinin
Show Answer
Answer : b
Hints & Solutions
(b) Plants which are difficult to flower can be made to do so by spraying them with 2,4 , -D (2,4 - dichlorophenoxy acetic acid) and NAA (napthalene acetic acid) which are synthetic auxins, e.g., litchi, pineapple.
