To help you with your portfolio activity on comparing body systems across different organisms, I'll provide you with a structured approach. Let’s break it down into two parts as requested:
Part 1: Comparing Body Systems
Overview of Organisms
Choose a few organisms for comparison. For this example, let’s consider the following:
- Human (Homo sapiens)
- Frog (Rana catesbeiana)
- Earthworm (Lumbricus terrestris)
- Bird (e.g., Sparrow)
Body Systems for Comparison
Sort your findings by body systems. Below is an outline to show similarities and differences.
-
Nervous System
- Similarities:
- All organisms have a nervous system that controls responses to the environment.
- Humans, frogs, birds, and earthworms possess specialized cells (neurons) that transmit signals.
- Differences:
- Humans and birds have a complex, centralized nervous system with a brain, while frogs have a simpler brain structure, and earthworms have a decentralized nerve cord.
- Similarities:
-
Circulatory System
- Similarities:
- All organisms transport nutrients and waste throughout their bodies.
- Differences:
- Humans and birds have a closed circulatory system with a heart that pumps blood through vessels. Frogs have a three-chambered heart, and earthworms have a simple closed system with a dorsal and ventral blood vessel.
- Similarities:
-
Respiratory System
- Similarities:
- All can exchange gases with their environment.
- Differences:
- Humans and birds breathe air using lungs, while frogs rely on both lungs and skin for gas exchange, and earthworms breathe through their moist skin.
- Similarities:
-
Digestive System
- Similarities:
- All organisms have a system for processing food and absorbing nutrients.
- Differences:
- Humans and birds have complex digestive systems with specialized organs (stomach, intestines), while frogs have a simpler system with fewer specialized regions, and earthworms have a tubular digestive system that processes food as it moves through.
- Similarities:
-
Reproductive System
- Similarities:
- All organisms reproduce to ensure species survival.
- Differences:
- Humans and birds exhibit sexual reproduction with distinct male and female systems, while frogs have external fertilization and earthworms can reproduce both sexually and asexually.
- Similarities:
Part 2: Designing Your Presentation
Presentation Structure
Here’s a suggested outline for your presentation:
-
Title Slide
- Title: "Comparison of Body Systems: Humans, Frogs, Earthworms, and Birds"
- Your Name and Date
-
Introduction Slide
- Brief introduction of the organisms studied.
- Purpose of the presentation.
-
Body Systems Comparison Slides
- Create individual slides for each body system:
- Nervous System
- Similarities
- Differences
- Circulatory System
- Similarities
- Differences
- Respiratory System
- Similarities
- Differences
- Digestive System
- Similarities
- Differences
- Reproductive System
- Similarities
- Differences
- Nervous System
- Create individual slides for each body system:
-
Conclusion Slide
- Summarize the key similarities and differences.
- Discuss the importance of understanding these systems in relation to evolution and adaptation.
-
References Slide
- Cite the sources of your information (textbooks, articles, etc.).
Review Against the Rubric
Ensure your presentation meets the specified criteria such as:
- Clear communication of information.
- Accurate comparisons and contrasts.
- Organized structure and visual appeal.
- Proper citations for all sources used.
Discussion with Learning Coach
Before finalizing, discuss your presentation with your learning coach. Get feedback on clarity, organization, and thoroughness. Make any necessary adjustments based on their suggestions.
Conclusion
By following this structured approach, you will create a comprehensive presentation that effectively compares the body systems of your chosen organisms to humans, highlighting both similarities and differences. Good luck!
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