Question

How do all life processes contribute to the growth and development of the body?

Answer 1

Hint: Living organisms, in order to maintain life, require to carry out a few basic processes like respiration, excretion, consumption of food, transportation, metabolism of nutrients and reproduction. These basic processes are called Life processes that help living organisms to sustain life.

Complete answer:
Living organisms carry out a few processes that are vital for sustaining life. These processes are called life processes. The processes are described in brief below:

Nutrition: The act of consumption of food and extracting energy from it is called nutrition. The importance of the process lies in the fact that it provides living beings with the energy they need to carry out the other processes. Modes of nutrition are of two types: autotrophic and heterotrophic. Autotrophic nutrition is when the organisms can make their own food by photosynthesis. Heterotrophic nutrition is when organisms are not able to make their own food and have to obtain it from other sources. Green plants and algae are autotrophs while animals are heterotrophs.

Transportation: Transportation in animals involves the circulatory system. It involves heart, blood, lymph, and the blood vessels. The heart pumps blood to all parts of the body. The blood carries oxygen and nutrients to the body parts. It also collects carbon dioxide back to the heart which is transported to the lungs for excretion. Blood also carries waste products to the kidneys, where waste materials are extracted and excreted.

Metabolism: The process by which the nutrients obtained by consumption of food is digested into smaller particles and their subsequent absorption by the body is called metabolism. Metabolic processes are of two types: catabolism and anabolism. Catabolism are processes that release energy while anabolism are processes that store energy.

Respiration: The process by which the stored fuel molecule is broken down to extract molecules of energy in the form of Adenosine Triphosphate or ATP. Oxygen may or may not be required for the process. Respiration in presence of oxygen is called aerobic and in absence of oxygen is called anaerobic.

Reproduction: Reproduction is the act of producing offspring to ensure the continuity of generation and maintaining the population of a particular species. reproduction is essential to survival of species. it can be asexual where the parent clones itself to produce new organisms, or sexual where the offspring is a product of genetic recombination of the parents.

Excretion: The biological processes produce waste products in the body which need to be excreted. The excretion of the wastes is executed by the excretory system that involves the kidneys. The kidneys filter blood and form urine to be excreted from the body. In humans the primary excretory product is urea.
All these processes work in an integrated manner that lead to growth and development of the body.

Note: The life processes are vital processes that contribute to growth and development of the body. These processes are nutrition, metabolism, transportation, reproduction, respiration and excretion. All these processes work to extract nutrients from food, their digestion and assimilation, transport to different body parts and their subsequent storage. All of these require energy which are extracted from the already stored fuel molecules like glucose.