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10. Respiration in Organisms Science class 7 in English Medium ncert book solutions NCERT Exercise
10. Respiration in Organisms NCERT Exercise – Complete NCERT Book Solutions for Class 7 Science (English Medium). Get all chapter explanations, extra questions, solved examples and additional practice questions for 10. Respiration in Organisms NCERT Exercise to help you master concepts and score higher.
10. Respiration in Organisms Science class 7 in English Medium ncert book solutions NCERT Exercise
NCERT Solutions for Class 7 Science play an important role in helping students understand the concepts of the chapter 10. Respiration in Organisms clearly. This chapter includes the topic NCERT Exercise , which is essential from both academic and examination point of view. The solutions provided here are prepared strictly according to the latest NCERT syllabus and follow the guidelines of CBSE to ensure accuracy and relevance. Each question is explained in a simple and student-friendly manner so that learners can grasp the concepts without confusion. These NCERT Solutions are useful for regular study, homework help, and exam preparation. All textbook questions are solved step by step to improve problem-solving skills and conceptual clarity. Students of Class 7 studying Science can use these solutions to revise important topics, understand difficult questions, and practise effectively before examinations. The chapter 10. Respiration in Organisms is explained in a structured way, making it easier for students to connect the theory with the topic NCERT Exercise . By studying these updated NCERT Solutions for Class 7 Science, students can build a strong foundation, boost their confidence, and score better marks in school and board exams.
10. Respiration in Organisms
NCERT Exercise
Exercise
Q1. Why does an athlete breathe faster and deeper than usual after finishing the race?
Answer:
During running, the athlete uses up lot of energy. So, he/she needs more energy and so breathes faster breakdown of food to release energy.
Q2. List the similarities and differences between aerobic and anaerobic respiration.
Answer:
Similarity: (i) Energy is released.
(ii)Carbon dioxide is produced.
Differences: (i) Anaerbic respiration does not reqire oxygen while aerobic respiration take place in the presence of oxygen.
(ii) Glucose is completly broken down into carbon dioxide and water in aerobic respiration but not in anaerobic respiraton.
3. Why do we often sneeze when we inhale a lot of dust-laden air?
Answer:
When we inhale a lot of dust laden air often these particles get trapped in the hair present in the nasal cavity. then they irritate the lining of the cavity,as a result of which we sneeze. Sneezing expels these foregion particles from the inhaled air and a dust free, clean air enters our body.
4. Take three test-tubes.Fill th of each with water. Label them A, B and C. Keep a snail in test-tube A, a water plant in test-tube B and in C, keep snail and plant both. Which test-tube would have the highest concentration of CO2?
Answer:
Test - Tube - C.
5. Tick the correct answer:
(a) In cockroaches, air enters the body through
(i) lungs (ii) gills (iii) spiracles (iv) skin
(b) During heavy exercise, we get cramps in the legs due to the accu mulation of
(i) carbon dioxide (ii) lactic acid (iii) alcohol (iv) water
(c) Normal range of breathing rate per minute in an average adult person at rest is:
(i) 9–12 (ii) 15–18 (iii) 21–24 (iv) 30–33
Answer:
(a) - (iii)
(b) - (ii)
(c) -(ii)
(d) - (ii)
Column I Column II6. Match the items in Column I with those in Column II:
(a) Yeast (i) Earthworm
(b) Diaphragm (ii) Gills
(c) Skin (iii) Alcohol
(d) Leaves (iv) Chest cavity
(e) Fish (v) Stomata
(f) Frog (vi) Lungs and skin
Answer:
| Column I | Column II |
| (a) Yeast | (iii) Alcohol |
| (b) Diaphagram | (iv)Chest cavity |
| (c) Skin | (i) earthworm |
| (d) Leaves | (v) Stomata |
| (e) Fish | (ii) Gills |
| (f) Frog | (vi) Lungs and skin |
Q7. Mark ‘T’ if the statement is true and ‘F’ if it is false:
(i) During heavy exercise the breathing rate of a person slows down. (T/F)
(ii) Plants carry out photosynthesis only during the day and respiration only at night. (T/F)
(iii) Frogs breathe through their skins as well as their lungs. (T/F)
(iv) The fishes have lungs for respiration. (T/F)
(v) The size of the chest cavity increases during inhalation. (T/F)
air is higher than that on the ground. (T/F)
Answer:
(i) false
(ii) false
(iii) true
(iv) false
(v) true
See other sub-topics of this chapter:
1. topic -1 2. NCERT Exercise 3. Additional Questions With Solutions 4. topic -4