Why are there different shaped leaves?

Phenomenon Description: Green holly bush with berries and spiky leaves beside a rose bush with smooth leaves and thorns.
Location: Wake Forest, North Carolina
Question: Why are there different shaped leaves?
Crosscutting Concepts: Structure and Function
Grade Level: 4
DCI: LS1.A Plants and animals have both internal and external structures that serve various functions in growth, survival, behavior, and reproduction.
Science Discipline: Life Science
Related Topics
- Cause and effect: Mechanism and explanation
- LS.4.1 Understand the effects of environmental changes, adaptations, and behaviors that enable organisms to survive in changing habitats.
- LS1.A Structure and Function