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Syllabus

Homeostasis — Syllabus

Telangana Open School (TOSS) · Class 12 · Biology

What Homeostasis covers in Telangana Open School (TOSS) Class 12 Biology: 4 topics, for the 2026-27 session. Topics include Concept of Homeostasis.

44 questions30 flashcards5 concepts

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4 Topics · Telangana Open School (TOSS) Class 12 Biology · 2026-27

Topics in Homeostasis

1

Concept of Homeostasis

  • Homeostasis means 'maintaining a steady state' in the body.
  • It ensures internal conditions like temperature, pH, water, and sugar levels remain stable.
  • Examples include regulating water balance, blood sugar, pH, red blood cell count, and body temperature.
2

Thermoregulation and Its Importance

  • Thermoregulation is the control of body temperature.
  • Enzymes work best between 35–40°C; outside this range, they become inactive or denatured.
  • Above 45°C: enzymes are destroyed, proteins denature, and cells may die.
3

Endotherms vs Ectotherms

  • Endotherms (e.g., birds, mammals) generate internal heat to maintain body temperature.
  • Ectotherms (e.g., frogs, fish, lizards) depend on external sources for body heat.
  • Endotherms are also called warm-blooded or homeotherms.
4

Mechanism of Thermoregulation in Humans

  • The hypothalamus acts as the body's thermostat.
  • It receives input from temperature sensors in the skin and blood.
  • When body temperature drops: vasoconstriction, shivering, and postural changes reduce heat loss and increase heat production.

Key Concepts

Central concept: Homeostasis

ThermoregulationEndotherms and EctothermsFeedback MechanismsComponents of HomeostasisPhysiological vs Behavioral RegulationEnzyme Function and Temperature

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Frequently Asked Questions

What are the important topics in Homeostasis for Telangana Open School (TOSS) Class 12 Biology?
Key topics in Homeostasis include Concept of Homeostasis, Thermoregulation and Its Importance, Endotherms vs Ectotherms, Mechanism of Thermoregulation in Humans. Study these first, then practise questions on each for the Telangana Open School (TOSS) Class 12 board exam.
How should I revise Homeostasis for the Telangana Open School (TOSS) Class 12 board exam?
Learn the core ideas first, then work through the 44 practice questions on Homeostasis. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Homeostasis

All Telangana Open School (TOSS) Class 12 Biology Syllabus

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