Part I: Anatomy Of A Flower - Ms. Murphy

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Interactions in PlantsBiological Processes and SystemsPart I: Anatomy of a Flower1. What is the definition of a flower?2. Why are many flower petals so brightly colored? What advantage does this give to the plant?Explain.3. Describe the male reproductive organ of a flower. What are the parts, and what is the functionof those parts?4. Describe the female reproductive organ of a flower. What are the parts, and what is the functionof those parts?5. Describe what happens in a plant after the egg is fertilized.1

Interactions in PlantsBiological Processes and SystemsPart I: Anatomy of a Flower, continuedAs you dissect the flower, draw each structure as it appears to the naked eye AND as it appearswhen magnified by the hand lens.SepalHand Lens ObservationNaked Eye ObservationPetal2

Interactions in PlantsBiological Processes and SystemsPart I: Anatomy of a Flower, continuedAs you dissect the flower, draw each structure as it appears to the naked eye AND as it appearswhen magnified by the hand lens.Hand Lens ObservationNaked Eye ObservationStamen3

Interactions in PlantsBiological Processes and SystemsPart I: Anatomy of a Flower, continuedAs you dissect the flower, draw each structure as it appears to the naked eye AND as it appearswhen magnified by the hand lens.Carpel (stigma and style)Hand Lens ObservationNaked Eye ObservationCarpel (ovary and ovule)4

Interactions in PlantsBiological Processes and SystemsPart II: Plant Responses1. Plants are able to respond to their environment even though they can not move. Explain whattropism is and what abiotic factors affect it.2. What is phototropism?3. What is gravitropism?4. Explain how plants respond to a light source, usually the Sun. What is occurring inside theplant, and what hormone is involved? Be specific.5. Describe what would occur if you turned a growing seedling on its side (without disturbing theroot system.) What is occurring inside the plant, and what hormone is involved? Be specific.5

Interactions in PlantsBiological Processes and SystemsPart II: Plant Responses, continued6. How could you observe gravitropism in action? List each step, then draw a diagram to illustratean experiment you could conduct in your home or classroom. Make sure to illustrate the plant atall phases of the experiment. For example, illustrate the plant before you start the experiment.Then, illustrate how you may have manipulated the plant. Finally, illustrate the end results ofyour gravitropism experiment. Use a separate piece of paper, if necessary.Steps of Gravitropism Experiment:Illustrations of Gravitropism Experiment:6

Interactions in PlantsBiological Processes and SystemsReflections and Conclusions1. Identify and describe two characteristics you learned that contribute to the success ofangiosperms.2. Can angiosperms be considered male or female? Explain.3. Explain how different flower structures might interact with a bee, for example, to help the plantreproduce successfully.4. What are the similarities and differences between phototropism and gravitropism?5. You are taking a walk in the woods and come across a strange young tree. A much larger treehad fallen on the young tree some time ago, pushing the trunk of the young tree all the way tothe ground, but the young tree is still growing. Describe how this strange young tree might look.Make sure to include how both phototrophic and gravitrophic affects shaped the growth of theyoung tree.6. Using all of the following terms, develop a graphic organizer. Use additional paper, if needed.Terms: Flower, reproduction, stamen, carpel, pistil, sepal, petal, anther, filament, ovary, ovule,stigma, style, pollen, angiosperm, dissect, seed7

Part I: Anatomy of a Flower, continued As you dissect the flower, draw each structure as it appears to the naked eye AND as it appears when magnified by the hand lens. Carpel (ovary and ovule)! Carpel (stigma and style)! . stigma, style, pollen,

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