Study Notes
Adaptive features are inherited characteristics that help organisms survive and reproduce in their environments.
- Adaptive feature — an inherited feature that helps an organism survive and reproduce in its environment Example: The thick waxy cuticle of xerophytes reduces water loss.
- Hydrophytes — plants adapted to live in extremely wet conditions Example: White water lilies have large air spaces in their leaves to stay near the water surface.
- Xerophytes — plants adapted to live in extremely dry conditions Example: Common myrtle has sunken stomata to reduce evaporation.
Exam Tips
Key Definitions to Remember
- Adaptive feature
- Hydrophytes
- Xerophytes
Common Confusions
- Confusing hydrophytes with xerophytes
- Misunderstanding the role of stomata in different environments
Typical Exam Questions
- How do hydrophytes adapt to their environment? They have large air spaces in their leaves and small roots.
- What are the adaptive features of xerophytes? They have thick waxy cuticles, sunken stomata, and small leaves.
- Why do xerophytes have extensive shallow roots? To quickly absorb water when it rains.
What Examiners Usually Test
- Ability to describe adaptive features of specific plants
- Understanding of how adaptations help survival in specific environments