Heredity and Function We have looked at genetics We have identified plants and animals using their structures Now, we will look at how genetics and function can effect adaptations

Heredity and Function What are some genetic traits or adaptations we may see in animals over several generations. What are some genetic traits or adaptations we may see in plants over several generations.

Structure and Function The structure and function of plant parts show evidence of adaptation. Examples Include: Defenses against consumers Ways to attract pollinators Seed dispersal to ensure survival http://commons.wikimedia.org/wiki/File:Weberocereus_tunilla_-_The_Cactaceae.jpg

Adaptations Look at the four “cards” on your desk Think about what each one means Read the following statement: The process that best allows a species or population of organisms to survive is _____________________________ Think about the statement, and choose which card you think best answers that question.

Plant Adaptations

Survival As you watch this presentation, focus on how variations, adaptations, or behaviors enhance a plants’ survival. Include: Roots Seeds Stems Phototropism Leaves Geotropism Flower

Structure and Function Comparing structure and function of parts and behaviors helps us understand why variation is necessary. Structure is the form of an organism’s parts. Example: A pedal is structured like a landing strip for insects. Function is what that part does. Example: The function of a petal is to attract insects. http://commons.wikimedia.org/wiki/File:Mature_flower_diagram.svg

Plant Adaptations What are some plant structures that help the plant survive? List at least 3

Common Plant Parts There are more than half a million different types of plants, and even though they look different, they all have some common parts. Most plants have: Roots Stems Leaves Flowers

Obtaining Food/Nutrients All plants must find and take in nutrients food carbon dioxide water

Roots must adapt to their different environments. Structure and Function: Roots act as anchors to keep plants grounded. Roots take in water and minerals from the soil through tiny root hairs. Some roots can store food. http://commons.wikimedia.org/wiki/File:Cycads_root.png

Roots Some roots spread out along the ground in search of water in places where it rains often. http://commons.wikimedia.org/wiki/File:Root.png