question_answer

Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:

Which of the following statement is correct? (1) The causal organism for foolish seedling disease is the source of gibberellin (2) Abscisic acid is a growth promoter (3) The ratio of auxin: cytokinin control cell differentiation (4) Bolting of cabbage can be induced by treatment with \[\text{IAA}\]

A)  1, 2 and 3 are correct    

B)  1 and 2 are correct

C)   1, 2 and 4 are correct   

D)  1 and 3 are correct

Correct Answer: D

Solution :

                 A foolish seedling disease (bakane) was observed by Japanese farmers in rice fields. These tall seedlings were found to be infected with the fungus Gibberella fujikuroi. Gibberellins induce subapical meristem to develop faster. This causes elongation of reduced stem or bolting in case of cabbage. Bolting of cabbage can be induced by treatment with \[\text{IAA}\text{.}\]