Thursday, April 21, 2011

Blog #11

Get a picture of alternation of generations put it in your blog and explain how it relates to plants




          Alternation of generations relates to plants because it represents the life cycle of their alternating asexual and sexual reproductive forms. In plants, this involves the alternating generations of haploid and diploid forms. Mostly, one of these generations are more dominant than the other, making the other generation dependent upon it or growing as a smaller plant. Examples of this is mosses or angiosperms because the haploid phase is more dominant in mosses, while the diploid phase is more dominant in the angiosperm.

Thursday, April 14, 2011

Blog #10

Why is dissection an important part of a biology curriculum? Which animals and/or plants should be included in biological studies?


          Dissection is an important part of biology because it helps us understand the anatomy of the organisms we dissect. When we dissect something, we are able to see all the internal parts of the organism, where they are located, and how they function. Animals and plants that should be included could be frogs, worms, or just any small organism that would be easy to dissect and understand.



Thursday, April 7, 2011

Blog #9

Define the different forms of community interaction: competition, commensalism, mutualism, predation, parasitism Give an example and a picture for each.


Competition: Competition is when two or more organisms use a common resource for supply. It sometimes results in a reduction or one or both of the competitors. Competition can occur among members of the same or different species. An example of this is bluebells vs. poppies for the bee's pollination. 


Commensalism: Commensalism is occurs between individuals of two different species where one benefits from the other without harming the second one. An example of this is trees and birds because birds uses trees to build a nest but they don't harm the tree. 


Mutualism: Mutualism is a relationship between two organisms that both benefit from each other. An example is a butterfly and a poppy because the butterfly drinks the pollen from the poppy.


Predation: Predation is where an organism acts as a predator and catches and feeds on another organism. An example is stinkbugs eating a caterpillar.


Parasitism: Parasitism is when an organism benefits from another organism but hurts or injures its host. An example is tapeworms and their vertebrate hosts.