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13) Define respiration . Mention the different types of respiration.14) What are plant growth regulaturs ? Mention the different types.

Answer»

13)Respirationis the process in which organisms exchange gases between their body cells and the environment. ... This process may involve the consumption of oxygen and production of carbon dioxide, as seen in aerobic cellularrespiration, or may not involve the consumption of oxygen, as in the case of anaerobicrespiration.

14)Plant Growth Promoters– They promote cell division, cell enlargement, flowering, fruiting and seed formation. Examples areauxins,gibberellinsandcytokinins. Plant Growth Inhibitors – These chemicals inhibit growth and promote dormancy and abscission in plants. An example is anabscisic acid



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