What are the answers to the following biology questions about blood vessels, breathing, root structures, and cell division?

You're on a roll — Here are the answers to your questions: 21. Name the blood vessel with the highest concentration of: i) Carbon (IV) oxide: Pulmonary artery or Vena cava* ii) Glucose: Hepatic portal vein* iii) Oxygen: Pulmonary vein or Aorta* 22. List three factors affecting breathing rate in human beings: i) Concentration of carbon dioxide* in the blood ii) Level of physical activity* (exercise) iii) Body temperature* 23. The diagram below shows a longitudinal section of a root: a) Give one adaptation of the part labeled A to its function. Part A represents the root hair zone. Its adaptation is having numerous root hairs, which greatly increase the surface area for efficient absorption of water and mineral salts. b) Give two functions of part labeled D. Part D represents the root cap. i) It protects the delicate meristematic cells* of the root tip from damage as the root grows through the soil. ii) It secretes mucilage* to lubricate the root tip, making it easier to penetrate the soil. 24. During cell division the following processes take place. a) Name the phase when chromosomes arrange at the center. Metaphase b) Name the phase when sister chromatids separate. Anaphase Send me the next one 📸