Monday, January 13, 2014

Big Idea 4

5. Commensalism: Commensalism describes a symbiotic relationship in which one organism benefits and the other is unaffected. This picture depicts an American Kestrel building a nest on a tree. The bird benefits from having a nesting place and the tree is unaffected by the bird's presence.
6. Competition: Competition occurs when members of a species or several species compete and vie for a variety of things, including but not limited to: mates, food, and specific plots of land. When this picture was taken, the chimpanzees were maniacally screaming and jumping around each other menacingly. They were all competing for the plastic container visible on the left.
8. Endosperm: An endosperm is the tissue produced inside the seeds of most flowering plants during the time of fertilization. Corn kernels are endosperms of corn.
9. Introduced species: An introduced species is one that is not native to a location. The bamboo at the sac zoo is an introduced species because it is living outside of its natural habitat and was intentionally planted there.
10. Keystone species: A keystone species is one that greatly and thoroughly affects its environment and habitat. Honey is the direct by-product of bees, which are one of the most important species on our planet as pollinators. Without bees, pollination rates would be greatly damaged and no more amazing honey would be produced.

11. K-strategist: K-strategy is exemplified by low amounts of offspring, long gestation periods, and large offspring. Tigers are K-strategists in the sense that mothers protect and teach their cubs how to survive for years before releasing them into the wild.
13. Niche: A niche refers to the unique role or status of an organism in its environment. The niche of this ball python in nature (and even in its simulated zoo environment) is that of the predator. It assumes a role that calls for it to be a dangerous animal that eats others. That specific niche of predation is occupied by the ball python where it is present.
16. Organism on a different level of the food chain: For this I decided to use only grass for a particular reason: grass is at the bottom of almost every land based food-chain. The many types of grass across the world serve as the primary source of food to thousands of animals that are then consumed themselves. Grass is not on one food chain, but rather on too many to count.
18. Population: A population is the summation of all the organisms of the same group or species who live in the same geographical location. This picture may seem barren, but inside the mostly hollow tree trunks and around the base of the tree, thousands of tiny insects (especially ants, spiders, and rolie-polies) coexist in harmony and carry on with their existences in this seemingly small geographical location.
20. R-Strategist: R-Strategist life histories are characterized by short life spans, little to no gestation periods, and many offspring. This cricket is a perfect example of an R-strategist because it lives for only a short time, reproduces in an explosive once-in-a-lifetime event, and has little to no gestation time at all.

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