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What is a plant hormone ? Name four plant hormones. State one function of each.

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The hormones that control and coordinate the activities in plants are called plant hormones. The four types of plant hormones are: 

(i) Auxins – It promotes cell enlargement and cell differentiation in plants. 

(ii) Gibberellines – It helps in breaking the dormancy in seeds and buds. 

(iii) Cytokinins – It promotes cell division in plants. 

(iv) Abscisic acid – It promotes the dormancy in seeds and buds.

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