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Solution


Q.

Read the passage given below and answer the following questions from (i) to (v).

Plant hormones are a group of organic substances that occur naturally and influence plant physiological processes. Plant hormones are also called phytohormones and work as growth regulators. Main processes affected are growth, differentiation, and development. It is well known that several plant hormones are involved in the regulation of fruit development and ripening across fleshy and dry fruits.

 

(iv) Which one of the following statements is true
1 When light is coming from one side of the plant, auxin diffuses towards the illuminated side of the shoot.  
2 Plant hormones are synthesized at places away from where they act and simply diffuse to the area of action.  
3 Cytokinin is involved in wilting of the leaves.  
4 Electrical impulses cannot travel rapidly.  

Ans.

(2)