AP Bio Chapters 52,53,54,55,56

Question 0

Net productivity

Answer 0

Represents the storage of chemical energy that will be available to consumers in the ecosystem and it is the amount of new biomass added in a period of time.

Question 1

Food web. Mild grassland community

Answer 1

Grass, grasshoppers, spiders, snakes, hawks, toads, rabbits, sparrows, mice, preying mantis.hawk predator, grass primary producer, grasshopper spider preying mantis primary consumer. Snakes are tertiary consumers. Hawks are quaternary consumers.

Question 2

Organisms responsible for primary production. Form the base of the food chain. In terrestrial ecosystems these are mainly plants, while in aquatic ecosystems they are algae.

Answer 2

Primary producers/autotrophs

Question 3

Ecological niche

Answer 3

The ecological role and space that an organism fills in an ecosystem fills, ex. snakes are carnivores and many are beneficial predators of garden pests like rats and slugs so they create balance.

Question 4

Population

Answer 4

A group of organisms that belong to the same species and live in the same area.

Question 5

Density independent factors

Answer 5

Affect a population regardless of size. Like rainstorms, frost, wind, temp changes

Question 6

Density dependent factors

Answer 6

Usually in effect only when s population is large. Competition, predation, parasitism, overpopulation.

Question 7

Sustainable yield

Answer 7

The ecological yield that can be extracted without reducing the base of resources itself. The surplus required to maintain an ecosystem at the same or increasing levels over time, and this yield usually varies over time with the needs of the ecosystem.