Respiration in Organisms
14 solved questions from Class 7 Science, each with the full working. Tap any question to see the step-by-step solution.
- 1 What is the fundamental scientific concept introduced in the chapter 'Respiration in Organisms'? medium MCQ Key Concept & Definition
- 2 Which of the following is an important application or observation related to 'Respiration in Organisms'? easy MCQ Practical Application
- 3 What primary question does the chapter 'Respiration in Organisms' aim to answer? medium MCQ Core Scientific Inquiry
- 4 Why is the study of 'Respiration in Organisms' essential for students in class-7? hard MCQ Importance & Significance
- 5 Which key practice is recommended while studying topics in 'Respiration in Organisms'? medium MCQ Scientific Method
- 6 What is the primary topic or theoretical principle explored in 'Respiration in Organisms' (Class 7 SCIENCE)? medium MCQ Chapter Core Principle
- 7 Which key mechanism or analytical rule is highlighted in 'Respiration in Organisms'? medium MCQ Key Analytical Mechanism
- 8 Which of the following is NOT a product of anaerobic respiration in human muscle cells? hard MCQ 4 marks anaerobic respiration products
- 9 A fruit fly consumes 0.3 g of oxygen in one day. How much oxygen does it consume per hour in milligrams? Show calculation. easy 1 mark oxygen consumption rate
- 10 A pond of volume 500 m³ has dissolved oxygen concentration 8 mg/L. A heatwave causes a 25% drop in dissolved oxygen. Calculate the remaining amount of oxygen in the pond in kilograms. hard 5 marks dissolved oxygen calculation
- 11 Which organelle is the main site of aerobic respiration in cells? easy MCQ 1 mark cellular respiration site
- 12 A 70‑kg adult human consumes 250 mg of oxygen per minute at rest. How many grams of oxygen does this adult consume in 6 hours? medium 2 marks oxygen consumption calculation
- 13 Which of the following processes is not part of cellular respiration in a eukaryotic cell? easy MCQ 1 mark Cellular respiration steps
- 14 A lake has a volume of 2 × 10⁶ L and the dissolved oxygen concentration is 9 mg L⁻¹. A sudden heatwave raises the temperature by 5 °C, causing the dissolved oxygen to drop by 15 %. If a fish consumes 0.3 g of oxygen per hour, how many fish can survive in the lake for 5 days before the oxygen is completely depleted? Assume no other sources or sinks of oxygen. hard 5 marks Oxygen availability and fish survival