Question

What are the 8 necessary life functions?

Answer 1

Life is a characteristic that distinguishes physical entities that have biological processes, such as signalling and self-sustaining processes, from those that do not, either because such functions have ceased (they have died) or because such functions were never present and they are classified as inanimate. Plants, mammals, fungi, protists, archaea, and bacteria are examples of various kinds of life. Biology is the study of living things.

Complete answer:
8 Necessary Life functions are
1. Cellular structure: A cell is made up of three parts: the cell membrane, the nucleus, and the cytoplasm, which sits between the two. The cytoplasm contains complicated arrangements of fine fibres as well as hundreds, if not thousands, of tiny yet unique structures known as organelles.
2. Growth: Growth is the unstoppable rise in the size of an organism through time. It may also be described as one of a living thing's qualities. “Biological growth” is a term used in biology to describe the progression of an organism. Cell growth refers to a rise in size or number of cells at the cellular level.
3. Reproduction: The biological process by which new individual organisms – "offspring" – are generated from their "parent" or parents is known as reproduction (or procreation or breeding). Asexual and sexual reproduction are the two types of reproduction. An organism can reproduce without the help of another organism in asexual reproduction.
4. Response to Stimuli: An item, event, or circumstance that can cause a physiological reaction. A stimulus can elicit a response from any of the five senses. There are two types of stimuli based on the stimuli applied to the sensory organs: homologous stimulus and heterologous stimulus.
5. Respiration: All living cells, including plant and animal cells, undergo respiration, which is a chemical process. It's the mechanism through which energy is released from glucose, allowing all of the other chemical reactions required for life to take place. Do not mistake breathing with respiration (which is properly called ventilation).
6. Excretion: Excretion is the process through which an organism's metabolic waste is removed. The lungs, kidneys, and skin in vertebrates are largely responsible for this. In all kinds of life, excretion is a necessary activity. Urine is evacuated through the urethra, which is part of the excretory system in animals.
7. Movement: When a live organism moves a bodily part or parts without changing its location, it is said to be moving. Locomotion occurs when a portion of the body moves, causing the organism's position and location to change. Both vertebrates and invertebrates have movement.
8. Definite life span: The greatest number of years a human may live is described as lifespan, whereas life expectancy is the average total number of years a human lives. An organism's life span is defined as the length of time between birth and death. The 80 years between birth and death that you may live is an example of life span. The maximum amount of time that a normal person may anticipate to live.

Note:
There is presently no agreement on what constitutes life. Organisms are open systems that maintain homeostasis, are made up of cells, have a life cycle, go through metabolism, can grow, adapt to their environment, respond to stimuli, reproduce, and develop, according to one prominent definition. Non-cellular living forms such as viruses and viroids are occasionally included in other definitions.