General Science class 7, chapter 2 MCQs Transport System in Human and Plants Class 7 MCQs by Farhan gabolJuly 5, 2023July 25, 2023 Page No: 3 1. What is the role of the liver in the human circulatory system? Pumping blood Producing red blood cells Detoxifying harmful substances Excreting waste products 2. The movement of substances from an area of high concentration to an area of low concentration is called: Osmosis Diffusion Transpiration Photosynthesis 3. Which of the following is the main component of human blood? Plasma Red blood cells White blood cells Platelets 4. What is the function of the guard cells in plant leaves? Transport of water Protection against pathogens Absorption of sunlight Regulation of stomatal opening and closing 5. The contraction phase of the human heart is called: Diastole Systole Pulmonary phase Atrial phase 6. Which of the following is responsible for the transport of hormones in plants? Phloem Xylem Stomata Root hairs 7. In humans, oxygen is transported from the lungs to body tissues by: Red blood cells White blood cells Platelets Plasma 8. The process by which plants convert light energy into chemical energy is called: Transpiration Photosynthesis Respiration Osmosis 9. Which of the following is responsible for the transport of water and minerals in plants? Phloem Xylem Stomata Epidermis 10. The human heart pumps blood to the lungs through which blood vessel? Pulmonary vein Pulmonary artery Aorta Superior vena cava Loading … Pages: 1 2 3 4 5
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