Locomotion and Movement — Class 11 Bio-Zoology (Samacheer Kalvi)
TN State Board (Samacheer Kalvi) Class 11 Bio-Zoology, Chapter 9. Skeletal system, joints and sliding filament theory.
1. About this chapter
This chapter covers Locomotion and Movement as part of the Class 11 Samacheer Kalvi Bio-Zoology curriculum. It deals with skeletal system, joints and sliding filament theory and builds conceptual understanding essential for the TN HSC Public Exam.
By the end of this chapter, students will be able to:
- Classify types of joints
- Explain the sliding filament theory of muscle contraction
2. Key concepts
- Concept 1: Classify types of joints.
- Concept 2: Explain the sliding filament theory of muscle contraction.
3. Important terms and formulas
| Term / Formula | Description |
|---|---|
| Classify types of joints… | Classify types of joints |
| Explain the sliding filament… | Explain the sliding filament theory of muscle contraction |
4. Worked examples
Example 1. Applying a key concept from this chapter.
Solution: Identify the relevant principle → apply the formula or rule → state the answer with correct units.
Example 2. A typical exam-style question on locomotion and movement.
Solution: Break the problem into steps, use the appropriate formula and verify the answer.
5. Common mistakes
- Mistake: Skipping units or forgetting to state them. Fix: Always write units alongside every quantity and answer.
- Mistake: Confusing similar terms or concepts in this chapter. Fix: Make a comparison table of the terms during revision.
6. Practice (exam-style)
- Define the main term or principle covered in Chapter 9.
- Give two real-life examples related to locomotion and movement.
- Solve a short numerical or descriptive question from this chapter.
- State one important formula and explain each symbol.
7. Answer key (hints)
- Refer to section 2 (Key concepts) above for the definition.
- Examples should be drawn from daily experience and local context.
- Apply the formula from section 3, show all steps clearly.
- Formula with units — refer to the textbook glossary for symbol meanings.
8. Quick revision
- Class 11 Bio-Zoology — Chapter 9: Locomotion and Movement.
- Core idea: Skeletal system, joints and sliding filament theory.
- Key outcomes: Classify types of joints; Explain the sliding filament theory of muscle contraction.
- Always revise diagrams / tables from the Samacheer Kalvi textbook before the exam.
