Control and Coordination
15 solved questions from Class 10 Science, each with the full working. Tap any question to see the step-by-step solution.
- 1 A person’s resting heart rate is 70 beats per minute. How many heartbeats will occur in 10 minutes? easy 1 mark Heart rate calculation
- 2 Which hormone lowers the blood glucose level by promoting the uptake of glucose into body cells? easy MCQ 1 mark Hormone action on blood glucose
- 3 A person’s resting heart rate is 80 beats per minute. How many heartbeats will occur in 15 minutes? easy 2 marks Heart rate calculation
- 4 Which organ in the human body secretes the hormone insulin? easy MCQ 1 mark Hormone secretion – insulin source
- 5 Rohini’s resting heart rate is 78 beats per minute. How many heartbeats will her heart make in 9 minutes? easy 1 mark Heart rate calculation
- 6 What is the primary topic or theoretical principle explored in 'Control and Coordination' (Class 10 SCIENCE)? medium MCQ Chapter Core Principle
- 7 Which key mechanism or analytical rule is highlighted in 'Control and Coordination'? medium MCQ Key Analytical Mechanism
- 8 Which gland secretes the hormone thyroxine (T4) that controls the metabolic rate? easy MCQ 1 mark Hormone‑secreting glands
- 9 Which gland secretes the hormone glucagon that raises blood glucose level? easy MCQ 1 mark Glucagon secretion
- 10 Rohit’s resting heart rate is 90 beats per minute. How many heartbeats will his heart make in 12 minutes? easy 1 mark Heart rate calculation
- 11 Write a short note (2–3 sentences) on how the hormone antidiuretic hormone (ADH) helps the body conserve water. medium 2 marks Hormonal regulation of water balance
- 12 A hormone raises the blood calcium level from 7.5 mg/dl to 10.5 mg/dl in 12 minutes. What is the average rate of increase of calcium concentration per minute? medium 2 marks Rate of change of concentration
- 13 In a withdrawal reflex, which of the following is the correct sequence of components from receptor to effector? medium MCQ 2 marks Neural pathway of withdrawal reflex
- 14 During a knee-jerk reflex, a doctor taps the patellar tendon causing a brief stretch of the quadriceps tendon. If the sensory conduction velocity is 70,m/s, the motor conduction velocity is 60,m/s, and the distance from the knee to the spinal cord is 0.4,m, estimate the total time delay from the stretch to muscle contraction. Assume the interneuron conduction speed is negligible. easy 2 marks Conduction velocity and reflex delay
- 15 Explain how the hypothalamus helps regulate body temperature when the ambient temperature is 30°C. Mention the roles of thermoreceptors, the hypothalamus as integration centre, and the effectors that are activated. hard 3 marks Hypothalamic regulation of body temperature