📚 Preparing for REET Mains 2025? In this video, you'll find the most important and frequently asked MCQs with answers on the topic "Respiration and Transportation in Organisms." This topic is extremely important in science and is asked every year in exams like REET, CTET, and RPSC. Watch the video until the end and increase your score! 🔔 Like, share, and don't forget to subscribe to the channel. 📌 Topics Covered: Aerobic and Anaerobic Respiration Mitochondria and ATP Structure of the Human Heart Blood Circulation and Purification Xylem and Phloem in Plants Alveoli, Stomata, Hemoglobin, etc. --- (Use for YouTube Shorts, Quiz Videos, or Blogs)** REET Mains Science MCQ Respiration and Transportation in Organisms Respiration and Transportation in Organisms REET Mains 2025 Science REET Biology MCQ in Hindi REET Science Most Important Questions REET 2025 Science Preparation Biological Respiration Questions and Answers Transportation in Animals and Plants CTET Science MCQ REET Science Test Series REET Biology Mock Test REET 2025 MCQ Practice REET Biology Previous Year REET Science Topic Wise MCQ REET Mains 2025 Science MCQ Respiration in Organisms Questions and Answers Respiration and Transportation REET Science Respiration and Transportation in Hindi REET Biology Important Questions Plant and Human Respiration MCQ REET 2025 Science Preparation CTET Science Quiz Objective Questions for Science REET Biological Respiration and Transportation --- There are two types of respiration: aerobic and anaerobic. Mitochondria are called the "powerhouse of the cell." The human heart has four chambers. Gaseous exchange in the lungs occurs in the alveoli. Hemoglobin transports oxygen. Xylem transports water in plants, and phloem transports food. ATP is the currency of energy. Platelets clot blood. RBCs do not have a nucleus. The primary function of the lungs and kidneys is excretion and purification.