Question

Compare and contrast how plants and animals use hormones to control life processes.

Answer 1

In both plant and animal, hormones function as chemical communicators. They coordinate and regulate many activities such as direction of tissue growth and fruit production in plants and development and reproduction in animals. The plant hormones have smaller organic content while in the case of animal hormone they have larger organic content. The plant hormone travels by the xylem and phloem while animal hormone can travel on the duct or by the blood. In plant hormone they secrets by the cell and transfer to the xylem or phloem, while animal hormone produced from a particular gland and transfer through by the duct or by blood stream. Plants can produce hormones, and they are able to modify or control certain specific physiological processes within the plant at low concentrations. The effects of plant hormones are more commonly localized to the target tissues. When a hormone binds to a specific receptor, it stimulates the activation of chemical and transport steps. This can generate the second messengers. They are responsible to trigger various responses of the cell to the original signal. Auxins, gibberellins, cytokinins, ethylene are the examples of plant hormones. Animal hormones secret from the endocrine glands, which are carried by the blood stream and passed to a distant part or tissue where they bring about a specific physiological function. They are produced in small quantities. Insulin, estrogen, testosterone are the animal hormones.