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TRUE : Oral sildenafil has been used successfully to manage acute RV dysfunction in heart transplant recipients, wean patients from nitric oxide, prevent rebound hypertension in patients on nitric oxide, reduce the duration requirement for … (c) has moisture (d) none of these. The percentage of carbon dioxide in exhaled air is 4.4%, Question 37. Earthworm respires through (c) typhoid 1. Understand the concept clearly by consistently practicing the Multiple Choice Questions and score well in your exams. Question 29. "College Biology MCQ" book helps with fundamental concepts for self-assessment with theoretical, analytical, and distance learning. (b) has more amount of oxygen Question 31. CBSE Class 7 Science Respiration in Organisms MCQs. (d) transportation. The air tubes present in insects are: (d) 21%, (d) 21% (c) exercising (c) 16.4% B. exhale. Go To Download Page Close. (a) lungs and skin MCQ Questions on Respiration In Plants. The substrate is completely broken down to form CO 2 and water. (c) 16.4% (c) 500 ml (c) transpiration Explanation are given for understanding. The size of chest cavity decreases during: (b) lactic acid Lungs Cancer is linked to smoking. (d) none of these. Respiratory System MCQ (Multiple Choice Questions and Answers) Q1. _____ is a product of aerobic respiration … Lung is main respiratory organ of mammals i.e. (d) lung cancer Question 1. Question 8. 4 Human Respiratory System: MCQs Quiz - 4 Please wait while the activity loads. (b): Glycolysis is the biochemical change in which one molecule of glucose is […] These multiple choice questions on Photosynthesis are very useful for SSC, UGC NET, NEET etc. (c) stomata Question 43. The reason of cramps in legs is: We have Provided Nutrition in Plants Class 7 Science MCQs Questions with Answers to help students understand the concept very well. A. (c) nostrils (a) carbon dioxide q33b. (d) skin. 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