Life and Ecology Module 2 Readiness Standards

Relationships in Food Webs Every organism needs energy to survive. Producers (plants) use the sun’s energy to make their own food. Organisms that cannot make their own food eat other organisms and are called consumers (rabbits). Predators often attack smaller or less fierce animals known as prey. Ex: Bears (predator) and fish (prey). Parasites, like ticks, benefit at the expense of the host, like a dog. Three different types of ecosystems include marine = oceanic type organisms, terrestrial = ecosystems found on land such as desert, tundra, rainforest, grassland, and freshwater=a pond or marsh. Readiness

Marine Food Web Practice Identify producer/consumer, parasite/host, predator/prey relationships. Readiness

Terrestrial Food Web Practice Identify producer/consumer, parasite/host, predator/prey relationships. Readiness

Freshwater Ecosystem Identify producer/consumer, parasite/host, predator/prey relationships. Readiness

Dependence and Competition for Abiotic and Biotic Factors An ecosystem is made up of all organisms (biotic factors) and non living components (abiotic factors). Abiotic factors include quantity of light, water, range of temperatures, and soil competition. Many times organisms depend on and compete for these organisms. A population is a group of organisms that live in a given area. Readiness Abiotic Factors

Environment and Adaptations As environments change over time, a population may need to adapt to the changes to survive in the environment. These adaptations must take place over many generations as a preferable trait becomes naturally selected for survival. If the population does not adapt they will disappear from that environment by either migrating or dying. Readiness

Adaptations- Galapagos Ground Finch How can there be so much diversity within the beaks of the ground finch? Readiness