Blog #14: Dissected Organisms Comparison

1. Grasshopper

     2. Frog

• Similarities

          -Both have at least one heart.

          -Both have a set of jumping legs.

• Differences

          -Grasshopper has an exoskeleton, frog has endoskeleton.

          -Grasshopper has wings, frog doesn't.

          -Grasshopper has a compound eye, frog has a normal eye.

Blog #13: What Was The Most Interesting About This Week's Dissections?

The most interesting things about this weeks dissections is definitely learning how the internal anatomy inside each animal is organized, and how each one works. I don't know why, but I really liked the crayfish dissection because of the way it looked and how we were able to take it apart.

Blog #12: What Surprised Me During the Worm Dissection?

There were quite a few things that surprised me when I did the worm dissection. The first thing that surprised me was the size of the worm alone. But the main thing that surprised me was the fact that the worm actually has individual working organs inside.

Blog #11: A Picture of Alteration of Generations and an Explanation

This picture has the same stages as the life cycle of a fern.

The Life cycle of a typical fern:

1. A sporophyte (diploid) phase produces haploid spores by meiosis.
2. A spore grows by mitosis into a gametophyte, which typically consists of a photosynthetic prothallus.
3. The gametophyte produces gametes (often both sperm and eggs on the same prothallus) by mitosis.
4. A mobile, flagellate sperm fertilizes an egg that remains attached to the prothallus.
5. The fertilized egg is now a diploid zygote and grows by mitosis into a sporophyte (the typical "fern" plant).

Blog #10: Why is Dissection an Important Part of a Biology Curriculum?

Dissection is an important part of the Biology because it gives students a chance to see the inner workings of an animal for themselves.

Blog #9: The Different Forms of Community Interaction

• Competition- Competition occurs when organisms of the same or different species attempt to use an ecological resource in the same place at the same time. An example of this is when two bears compete for a group of fish.

• Commensalism- Commensalism occurs when one member of the association benefits, while the other is neither helped or harmed. An example of this is when a clown fish uses a sea anenome as a home.

• Mutualism- Mutualism occurs when both species benefit from the relationship. An example of this is when a species of ants care for aphids, while the aphids produce a sweet liquid that the ants like to drink.

• Predation- Predation occurs when one organism captures and feeds on another. An example of this is when lions kill and eat a wild ox.

• Parasitism- Parasitism occurs when one organism lives on or inside another organism and harms it. An example of this is when wasps lay their eggs on organisms such as caterpillars.

 

Blog #8: What Have I Learned?

Throughout the third quarter, I have learned a lot. This is a list of things that I have learned about.

• DNA Mutation
• Amino Acids
• Fossils
• Evolution
• Half Lives
• Cladograms
• Ecosystems
• Organisms
• Habitats
• Population