Monday, March 18, 2013

Cohesion


       This video shows water sticking in a straw when the top is covered, and then falling out when it is uncovered. This demonstrates not only cohesion, but adhesion s well. The water molecules stick to each other and to the straw's surface to remain within the straw. When pressure is released, the water falls.

Pollinator

    

        This is a video of the wind blowing. The wind is an example of a pollinator. Pollen can blow from one plant to another very easily, though this is not near as efficient as if a bee or some other insect were pollinating.

Endosperm

       This corn cob is a perfect example of endosperm. Endosperm is the material within seeds of most plants. The inside of the kernels are just that. Most flowering plants produce seeds with endosperms. 

Population

       This picture of my family is an example of a population. Population is the number of organisms of the same group or species in a given area. My family is the population of my house, which in numbers is four.

Different Alleles

       This picture of my mom and dad is also evidence that there are different alleles. My dad has much darker skin than my mom which by itself really proves nothing, but when you consider how many different skin colors are possible, this really is proof that there must be different alleles controlling skin color.

Different Alleles

       This picture, while extremely beautiful if I may say so myself, is an example of different alleles. This flower is both pink and white, showing that there must be multiple alleles controlling the color in this particular plant specimen.

Eukaryote

       This plant is a eukaryote. A eukaryote is a multicellular organism. The vast majority of organisms on this planet are eukaryotes; everything from plants to bugs and fish to humans. Eukaryotes evolved from the simpler, unicellular, prokaryotes.