BIOLOGY [2 Mark Question Answer]

Two Characteristics features of hormones
1. They are produced in one organ and influence the functioning of another organ called the target organ.
2. A very small amount of hormones is produced and they are destroyed soon after their action.

stress, in psychology and biology, any environmental or physical pressure that elicits a response from an organism. In most cases, stress promotes survival because it forces organisms to adapt to rapidly changing environmental conditions.

The onset of changes that lead to sexual maturity is called puberty. Puberty is the time when adolescent boys and girls reach sexual maturity and become capable of reproducing. Puberty is a time of fast physical growth that leads to sexual maturity.

The period of life, when the body undergoes changes, leading to reproductive maturity, is called adolescence. The period of adolescence is normally 11 years to 19 years.

Endocrine glands are ductless glands of the endocrine system that secrete their products, hormones, directly into the blood. The major glands of the endocrine system include the pineal gland, pituitary gland, pancreas, ovaries, testes, thyroid gland, parathyroid gland, hypothalamus and adrenal glands.

Hormones are chemical substances that act like messenger molecules in the body. After being made in one part of the body, they travel to other parts of the body where they help control how cells and organs do their work. For example, insulin is a hormone that's made by the beta cells in the pancreas.