Life Processes-20 PDF

Think it over! 5.5.2 Excretion in Plants Plants use completely different Organ donation strategies for excretion than those Organ donation is a gener...

Think it over! 5.5.2 Excretion in Plants Plants use completely different Organ donation strategies for excretion than those Organ donation is a generous act of donating an of animals. Oxygen itself can be organ to a person who suffers from non-function of thought of as a waste product organ(s). Donation of an organ may be done by the generated during photosynthesis! consent of the donor and his/her family. Anyone We have discussed earlier how regardless of age or gender can become an organ plants deal with oxygen as well as and tissue donor. Organ transplants can save or CO2. They can get rid of excess water transform the life of a person. Transplantation is by transpiration. For other wastes, required because recipient’s organ has been plants use the fact that many of damaged or has failed by disease or injury. In organ their tissues consist of dead cells, transplantation the organ is surgically removed and that they can even lose some from one person (organ donor) and transplanted to parts such as leaves. Many plant another person (the recipient). Common waste products are stored in transplantations include corneas, kidneys, heart, cellular vacuoles. Waste products liver, pancreas, lungs, intestines and bone marrow. Most organ and tissue donations occur just after may be stored in leaves that fall off. the donor has died or when the doctor declares a Other waste products are stored as person brain dead. But some organs such as resins and gums, especially in old kidney, part of a liver, lung, etc., and tissues can be xylem. Plants also excrete some donated while the donor is alive. waste substances into the soil around them. Q U E S T I O N S ? 1. Describe the structure and functioning of nephrons. 2. What are the methods used by plants to get rid of excretory products? 3. How is the amount of urine produced regulated? What you have learnt n Movement of various types can be taken as an indication of life. n Maintenance of life requires processes like nutrition, respiration, transport of materials within the body and excretion of waste products. n Autotrophic nutrition involves the intake of simple inorganic materials from the environment and using an external energy source like the Sun to synthesise complex high-energy organic material. n Heterotrophic nutrition involves the intake of complex material prepared by other organisms. n In human beings, the food eaten is broken down by various steps along the alimentary canal and the digested food is absorbed in the small intestine to be sent to all cells in the body. 98 Science 2024-25