Life Processes Mind Map

Life processes are the basic activities such as nutrition, respiration, transport, and excretion that keep an organism alive.

In answers, connect at least two life processes and show how they support one another.

Nutrition is the process of taking in food and using it for energy, growth, repair, and maintenance.

When answering, mention both the source of food and the way it is used by the body.

Autotrophic nutrition is the mode in which organisms make their own food from carbon dioxide and water, usually using sunlight and chlorophyll.

In exam answers, always mention raw materials, chlorophyll, sunlight, and the product glucose or starch.

Stomata are tiny pores on leaves that allow gas exchange and transpiration.

Mention guard cells, the stomatal pore, and the direction of gas movement in your answer.

Heterotrophic nutrition is the mode in which organisms depend on other organisms or organic matter for food.

Learn the three main types and give one correct example for each.

The alimentary canal is the long tube from mouth to anus through which food passes and gets digested, absorbed, and removed.

In diagrams, label the food path in order and mention peristalsis.

Digestive juices are fluids that contain enzymes and other substances that break complex food into simpler forms.

Remember which juice acts where and on which food group.

Absorption is the passage of digested food from the small intestine into the blood or lymph.

Always mention increased surface area and the role of villi and lacteals.

Respiration is the cellular process in which glucose is broken down to release energy for life activities.

In exam answers, distinguish breathing, transport of gases, and cellular respiration.

Aerobic respiration breaks down glucose using oxygen, while anaerobic respiration breaks it down without enough oxygen.

Remember the end products and the difference in energy release.

The respiratory system brings air into the body, exchanges gases, and helps supply oxygen to cells.

In diagrams, show the direction of diaphragm movement and rib cage movement clearly.

Transportation in human beings is the movement of substances like oxygen, nutrients, hormones, and wastes through the blood and lymph.

In answers, mention the heart, blood vessels, and the different substances carried.

Double circulation means blood passes through the heart twice in one complete round: once for oxygenation and once for distribution to the body.

In diagrams, show two loops and label oxygenated and deoxygenated blood clearly.

Transportation in plants is the movement of water, minerals, and food through xylem and phloem.

Remember xylem for water and phloem for food.

Excretion is the removal of metabolic wastes from the body, mainly through kidneys, lungs, skin, and liver.

In answers, use the words filtration, reabsorption, and urine formation.

Excretion in plants is the removal or storage of waste substances produced during life processes.

Mention storage, diffusion, leaf fall, and release through stomata in your answer.