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Subject: Biology
Semester: 1
Period: 2
Week: 7
School Name:
Teacher’s Name:
Subject: Biology
Grade Level: Grade 11
Date: Week 7
Lesson Duration: 45 minutes
Week & Term: Week 7, Period II
Topic: Nutrition and Food Preservation
Sub-topic: Definition of Nutrition and Types (Autotrophic, Heterotrophic, Holozoic)
Learning Objectives
By the end of the lesson, students should be able to:
- Define nutrition and explain why living things require nutrients.
- Differentiate among the various types of nutrition.
- Give examples of organisms that exhibit each nutritional type.
- Describe how each mode of nutrition supports life.
Previous Knowledge
Students already know:
• That food is important for energy and growth
• That plants and animals need food for survival
Instructional Materials
- Charts or posters showing photosynthetic plants, herbivores, carnivores, and decomposers
• Diagrams showing autotrophic and heterotrophic processes
• Index cards for matching organisms with nutritional modes
• Labeled illustrations or PowerPoint slides
Lesson Development – ABC Model
A – Anticipation (Warm-up / Starter)
Time: 5–10 mins
Ask students:
– “What happens when you don’t eat for a long time?”
– “Do all organisms eat the same way?”
Use these questions to introduce the importance of food and modes of nutrition.
Teacher’s Role: Guide the discussion, write students' responses on the board
Learner’s Role: Share opinions, give examples from daily life and nature
B – Building Knowledge (Main Lesson Body)
Time: 25–30 mins
Teacher explains:
• Nutrition is the biological process by which living organisms obtain and use food for energy, growth, and repair.
• Types of Nutrition:
– Autotrophic Nutrition: Organisms like green plants use sunlight to make their own food through photosynthesis.
– Heterotrophic Nutrition: Organisms cannot make their own food and rely on others. These include:
– Holozoic Nutrition: Humans and most animals ingest solid food, digest it internally, and absorb nutrients.
– Saprophytic Nutrition: Some fungi and bacteria absorb nutrients from dead or decaying matter.
– Parasitic Nutrition: Organisms like tapeworms live in or on a host and feed off it.
Learners’ Activities (Expanded):
• Work in groups to sort organism cards under the three nutrition types
• Draw and label a diagram showing how a plant carries out photosynthesis
• Use real-life scenarios (e.g., termites feeding on wood) to identify the mode of nutrition
• Create a role-play where each group acts out a specific nutrition method (e.g., parasitic, autotrophic)
Assessment Checks:
✓ True/false quiz on definitions and examples
✓ Oral questions during the role-play presentations
✓ Matching activity: mode of nutrition to correct example
Notes (Expanded & Detailed):
Nutrition is essential because it helps organisms to grow, stay healthy, and produce energy.
• Autotrophs (e.g., green plants) use sunlight, carbon dioxide, and water to make food via photosynthesis.
• Heterotrophs depend on other organisms.
– Holozoic organisms (like humans) eat, digest, and absorb nutrients.
– Parasites (like lice or tapeworms) feed off a host, often harming it.
– Saprophytes break down dead organic matter (e.g., fungi).
Understanding nutrition helps us appreciate life’s diversity and interdependence.
C – Consolidation (Conclusion & Assessment)
Time: 5–10 mins
Recap types of nutrition and how different organisms obtain food. Use quick quiz questions like:
– “What type of nutrition does a mushroom use?”
– “Is a mosquito an autotroph or heterotroph?”
Evaluation Method (Expanded):
• Quick-fire quiz where students raise cards showing ‘A’ for autotrophic and ‘H’ for heterotrophic
• 5-minute written summary of the day’s lesson in their notebooks
• Each student names one organism and its nutritional method
Assignment (Expanded):
- Write one paragraph each on autotrophic and heterotrophic nutrition, with examples.
- Interview a farmer or gardener and find out how they think plants get their food.
- Create a mini-poster illustrating the differences among autotrophic, heterotrophic, and holozoic nutrition.
Differentiation / Inclusive Strategies
- Struggling Learners: Use labeled picture charts and one-on-one guidance
• Advanced Learners: Research and present on unique feeders (e.g., Venus flytrap, vampire bats)
• Students with Disabilities: Pair up for group work, provide large-print diagrams and verbal instructions
Teacher’s Reflection (After Class)
• What worked well?
• What needs improvement?
• Students’ engagement level: □ High □ Medium □ Low
• Next steps: Introduce food groups and nutrients next week