Question

The process of internal growth in living organisms is known as:

• A. Intussusception
• B. Accretion
• C. Extrinsic growth
• D. Reproduction

Answer 1

The correct option is A Intussusception

The process of increase in size, mass or height of an individual is known as growth. It can occur by cell division or cell expansion. Intussusception and accretion are the two types of growth. When there is addition of material and formation of the cells inside the organism, the growth is known as intussusception. The increase in size due to deposition of material on the external surface is known as extrinsic growth or accretion. It is seen in non-living things such as sand dunes and glaciers. Reproduction is production of new individual organisms or offspring by their parents.