What are the definitions and functions of biological terms like excretion, arteries, urea, organs of respiration, stigma, and gliding joints?

Here are the answers to the questions: 5. The removal of waste product from the body is known as C. excretion. Excretion is the process by which metabolic waste products and other non-useful substances are eliminated from an organism. 6. The vessels that carry blood away from the heart are called A. arteries. Arteries are blood vessels that transport oxygenated blood away from the heart to the rest of the body. 7. Which of these waste products is excreted by the kidney? D. Urea. The kidneys filter urea, a nitrogenous waste product formed from the breakdown of proteins, from the blood to produce urine. 8. The following are organs of respiration except B. liver. The bronchus, lungs, nostrils, and windpipe (trachea) are all components of the respiratory system. The liver is primarily involved in digestion and metabolism. 9. Which of the following parts of a flower receives pollen grains during pollination? D. Stigma. The stigma is the receptive tip of the carpel (female reproductive organ) in a flower, which receives pollen during pollination. 10. The gliding joint is found in the A. ankles. Gliding joints (also known as plane joints) allow bones to slide past each other in various directions. They are found in the tarsals of the ankle and carpals of the wrist.