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(d) 0.04%, (c) 16.4% (d) lungs is a process of taking oxygen into the cells in order to break down simple food materials. 2. The rate of exchange of gases in plants is not as fast as in animals. Question 17. Students are advised to practice the NCERT MCQ Questions for Class 10 Science Chapter 7 Control and Coordination with Answers Pdf free download is available here. The muscles of legs can be relieved by: Question 18. (d) 0.5 ml. (d) do not move at all. Please make sure you complete it in stipulated time. If you like this quiz, don't forget to share it with your friends. We have Provided Nutrition in Animals Class 7 Science MCQs Questions with Answers to help students understand the concept very well. (b) lungs Chest cavity is surrounded by (a) 12 pair of ribs (b) 10 pair of ribs (c) 11 pair of ribs (d) 25 ribs (a) 12 pair of ribs. 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