Describe the structure and functioning of nephrons.
What are the methods used by plants to get rid of excretory products?
How is the amount of urine produced regulated?
Answers
Answer:
plants store their waste materials in cell vacuole
Explanation:
sclerenchyma cells have large deposition of waste materials in them and they are deposited in plant's bark
Answer:
1) A nephron is the filtration unit of the kidney. It consists of a tubule which is connected with collecting duct at one end and a cup-shaped structure at the other end. This filtrate contains glucose, amino acids, urea, uric acid, salts and a major amount of water.
2) (i) Plant produces carbon dioxide as wastes during respiration and oxygen as waste during photosynthesis.
(ii) Excess of water is removed through transpiration.
(iii) Some waste products like gums and resins are stored in older xylem tissue.
3) The total amount of urine produced in humans is regulated by the presence of : The total amount of water. The total amount of dissolved nitrogenous wastes present in the urine. Certain hormones that help in controlling the movement of water and sodium ions into and out of the nephrons.