Nervous System Need and Overview_unsolved Paper
Chapter: Control and Coordination | Topic: Nervous System Need and Overview
NERVOUS SYSTEM NEED AND OVERVIEW_UNSOLVED PAPER
Topic: Nervous System Need and Overview
Q1.Which system helps the body receive information, process it, and produce suitable responses?
- Digestive system
- Nervous system
- Excretory system
- Respiratory system
Q2.The basic structural and functional unit of the nervous system is:
- Nephron
- Neuron
- Alveolus
- Platelet
Q3.Which part of the nervous system mainly controls thinking, memory, and voluntary actions?
- Brain
- Kidney
- Heart
- Stomach
Q4.A student quickly moves their hand away after touching a hot object. This response begins when receptors detect a:
- Stimulus
- Nutrient
- Hormone
- Waste product
Q5.Which structure carries messages between the central nervous system and different parts of the body?
- Blood vessels
- Nerves
- Tendons
- Ligaments
Q6. The central nervous system consists mainly of the:
- Brain and spinal cord
- Heart and lungs
- Kidneys and urinary bladder
- Stomach and intestine
Short questions
Q1.Why does the human body need a nervous system?
Q2.What is a stimulus? Give any two examples of stimuli from daily life.
Q3.What is a response? Explain it using one suitable everyday example.
Q4. A student hears the school bell and immediately starts packing their bag. Identify the stimulus and describe the response involved.
Q5. State the main components of the human nervous system.
Q6. How do sense organs help the nervous system collect information from the surroundings?
Q1. Explain why coordination is necessary in multicellular organisms. Describe how the nervous system helps different organs and body parts work together.
Q2.Describe the general pathway followed by a nerve message from the detection of a stimulus to the production of a response. Use a suitable example to support your explanation.
Q3.During a school sports event, a student sees a ball moving quickly toward them and immediately moves aside. Explain how the nervous system helps the student detect the situation, process information, and produce a suitable response.
Q1. A student records the time taken to respond to a visual signal during five trials:
Answer the following:
Calculate the total response time for all five trials.
Calculate the average response time.
Identify the fastest and slowest response times.
Suggest one factor that may affect response time.
Q2. During a classroom activity, a teacher gives a light signal to 20 students. The students are grouped according to their response time:
Answer the following:
How many students responded in less than 0.50 seconds?
What percentage of students responded in less than 0.50 seconds?
How many students took 0.50 seconds or more?
Suggest one reason why response times may differ among students.
Q3. Read the following case:
During a school laboratory activity, a student accidentally touches a warm metal object. The skin detects the change in temperature, a message is transmitted through the nervous system, and the student quickly moves their hand away.
Based on your understanding of the nervous system:
Identify the stimulus involved.
Describe the role of receptors in this situation.
Explain how information is carried to the central nervous system.
Describe how a suitable response is produced.
Explain why a quick response is important for the body.