Control and coordination-science class 10th test paper

Control and coordination-science class 10th test paper

Here is a comprehensive test paper for Class 10 Science Chapter 6: Control and Coordination, designed to assess in-depth knowledge, competency, and application skills, based on the latest CBSE syllabus for 2024-25.

Section A: In-Depth Knowledge Questions

1. Explain the mechanism of reflex action in humans. Illustrate your answer with a labeled diagram of the reflex arc.
2. Describe the role of plant hormones in growth and development. Discuss the functions of auxins, gibberellins, cytokinins, abscisic acid, and ethylene.
3. Discuss the structure and functions of the human brain. Highlight the roles of the cerebrum, cerebellum, and medulla oblongata.

Section B: Competency-Based Questions

4. A person accidentally touches a hot object and withdraws their hand immediately. Explain the sequence of events that occur in the nervous system during this action.
5. Plants exhibit various movements in response to external stimuli. Compare and contrast phototropism and geotropism, providing examples for each.
6. Analyze how the human body maintains homeostasis through hormonal control. Provide examples of hormones involved in regulating blood sugar levels and stress responses.

Section C: Previous Year Questions

7. In a nerve cell, where is the electrical impulse converted into a chemical signal? (CBSE 2024)
8. a) Axon
9. b) Dendrites
10. c) Neuromuscular junction
11. d) Cell body
12. How is the movement of leaves in a sensitive plant different from the downward movement of roots? (CBSE 2024)
13. Name the hormone and the gland which secretes it that regulates carbohydrate, protein, and fat metabolism in our body. Why is it important to have iodized salt in our diet? (CBSE 2024)

Section D: NCERT Textbook Questions

10. How does chemical coordination occur in plants? Explain the role of plant hormones in this process.
11. What are the major parts of the brain? Mention the functions of different parts.

Section E: Sample Paper Questions

12. Differentiate between voluntary and involuntary actions. Provide examples of each.
13. Explain how auxins promote the bending of the plant stem towards light. Include the mechanism involved.
14. Describe the feedback mechanism of hormonal regulation in the human body. Use the regulation of blood sugar levels as an example.

Section F: Case-Based Questions

1. Case Study:

A gardener observed that when he applied a certain substance to the shoots of a plant, the plant exhibited increased growth and the stems bent towards light.

1. a) Identify the substance applied by the gardener.
2. b) Explain the mechanism by which this substance causes the observed effects.
3. c) Discuss the role of this substance in the natural growth of plants.

1. Case Study:

A patient was diagnosed with a disorder that resulted in the overproduction of thyroxine.

1. a) Name the gland responsible for secreting thyroxine.
2. b) List the symptoms that the patient might experience due to this condition.
3. c) Explain the feedback mechanism involved in regulating thyroxine levels in the body.

Note: This test paper is designed to assess students’ understanding of the concepts in Chapter 6: Control and Coordination. Students are encouraged to provide detailed explanations, use diagrams where applicable, and relate their answers to real-life applications to demonstrate a comprehensive understanding of the topics.