AP Bio Scavenger Hunt # 6

Predation: (spider) an interaction between species in which one species, the predator, eats the other, the prey. The spider is a classic insect predator and commonly prey on such arthropods as crickets, bees, moths and flies. The spider is found in the center of its web, as pictured here, waiting for prey to  become caught in its web.

Homeostasis: (panting dog) how a living organism regulates its internal environment to maintain stability, such as regulating body temperature. When temperatures rise, endothermic organisms like dogs pant or "sweat" through its nose and mouth. Fresh air is breathed into the nose and works to cool the blood circulating in the nose while warm air is exhaled through the mouth, effectively cooling the dog and restoring proper internal temperature.

Lipid used for energy storage: (butter) one of a group of compounds, including fats, phospholipids, and steroids, that mix poorly, if at all, with water. These compounds store energy for organisms to use later during increased periods of activity.

Littoral zone organism: (crayfish) the littoral zone is, in a lake or river, well-lit waters close to shore, where small aquatic life live in the shallow, damp pools near shore. It may be difficult to see but pictured here are crayfish skeletons, victims of the summer drought. The white/gray bones are in the middle of the photo, one skeleton next to the rock next to my hand. Crayfish live in the shallow shore waters on rivers.

Modified root of a plant: (tree roots) this tree has modified its root system in order to deal with the summer drought, which has drained the river and created a lower water level than the tree is used to. In order to adjust to fewer resources, the tree has stretched its roots farther into the ground to find damp, nutritious soil and reaches toward the river in order to reach the water.

Spore: (brown spore) in the life cycle of a plant or alga undergoing alternation of generations, a haploid cell produced in the sporophyte by meiosis. A spore can divide by mitosis to develop into a multicellular haploid individual, the gametophyte, without fusing with another cell. In fungi, a haploid cell, produced either sexually or asexually, that produces a mycelium after germination. This plant's little brown spores are hanging under the leaves as the plant prepares for reproduction.