Ch. 5 Test Review

Populations Key Terms – Populations – Carrying capacity Know the difference between the following: (p ) Logistic Growth Exponential Growth

Why is Human Pop. Growing so fast? Agricultural Technology Medical advancements Industrial Rev. (1700’s) Which part shows birth and death rates about equal? Where is growth 0?

Human Pop. (cont.) Better sanitation, hygiene and disease control have lowered the DEATH RATE!!!

Which is a population? A- all the insects in Memphis, TN B- all the cats in LeMars, IA C- all the birds in Chicago,IL D- all the fish in Lake Superior It must be an interbreeding group. B

Milkweed plant & Monarch butterfly Make sure you know about the co-evolution relationship of these 2 organisms. The poisonous plant helped the caterpillar. How?

Factors that Affect Pop. size Biotic- – LIVING – Ex. Prey Abiotic- – NONLIVING – Ex. Disease, weather

Predator/ Prey Most animals are both predators and prey. Predators: – Hunt and kill their food Prey: – Are the food

Symbiosis When 2 organisms live in close association with each other. 3 Examples… Parasites Mutualism Commensalism

Herbivory p. 110 Herbivores eat plants, but plant do try to protect themselves sometimes. Ex. Thorns, spines, bad tasting chemicals. Monarch butterflies have evolved a way to get around that problem. – Use the toxin in milkweeds in their own defense.

Parasite/Host Symbiotic Examples… – You come up with 3

Commensalism Symbiotic Examples… – You come up with 3 Ex. Orchids use trees to get close to sunlight

Mutualism Symbiotic Examples… – You come up with 3

Niche The ROLE an organism has in its ecosystem. Fundamental Niche-what is could occupy Realized Niche-what it really does occupy