Give examples of any three physiological processes that
are regulated by hormones IN PLANTS
1. Germination: Hormones such as gibberellins regulate the process of seed germination in plants. They promote cell elongation and division, leading to the growth of the root and shoot systems from the seed.
2. Flowering: Hormones like auxins and cytokinins play a crucial role in regulating the flowering process in plants. Auxins promote flowering, while cytokinins delay it. The balance between these hormones determines when and how a plant will flower.
3. Senescence: Ethylene is a hormone that regulates the senescence (aging) process in plants. It triggers the breakdown of chlorophyll and other cellular components, leading to the yellowing and wilting of leaves. Ethylene also promotes the shedding of fruits and leaves.
Sure! Here are three physiological processes in plants that are regulated by hormones:
1. Flowering: The process of flowering in plants is regulated by the hormone called gibberellin. Gibberellins are responsible for promoting floral initiation, elongation of the floral stalk, and opening of flowers.
2. Seed Germination: Abscisic acid (ABA) is a hormone involved in the regulation of seed dormancy and germination in plants. ABA helps maintain seed dormancy by inhibiting germination under unfavorable conditions like drought or low temperature. It also promotes seed dormancy by preventing germination until appropriate conditions, such as the presence of water or suitable temperature, are met.
3. Leaf Senescence: Ethylene is a plant hormone that regulates the process of leaf senescence or aging. As leaves approach the end of their lifespan, ethylene production increases, leading to metabolic changes that cause the leaves to become yellow, wither, and eventually fall off. Ethylene promotes the breakdown of chlorophyll and other cellular components during leaf senescence.
These are just a few examples of the many physiological processes in plants that are regulated by hormones.