Biology 101 Study Guide – Test 6 – (Fall 2002)

Ch. 23 - "Ecology of Populations"

Understand exponential & sigmoidal growth curves, recognize equations and their components; Understand biotic potential, environmental resistance, carrying capacity;

Know how to manage a population for maximum sustainable yield

Understand 3 survivorship curves & age structure diagrams

Understand density dependent and independent effects (factors)

Know the characteristics of "r" and "K" strategists; 

Understand the history of human population growth;

Know the differences in MDCs and LDCs;

Review Fig. 23.1,23.4,23.5,23.7,23.8,23.9,23.10,23.13,23.14       

Ch. 24 - "Community Ecology" - Define community, niche, Understand the 3 types of interactions; Understand effects of intraspecific and interspecific competition; Know "Competitive Exclusion Principle" & effects of predation; Define Keystone predator and species; Know types of mimicry; Understand ecological succession; Review Fig. 24.7, 24.9, 24.10, 24.12, 24.13, 24.19, 24.21

Ch. 25 - "Ecosystems" - Know who producers, consumers, autotrophs, and heterotrophs are; Know energy flow, chemical cycling, food webs, trophic levels; Distinguish primary, secondary, tertiary consumers, decomposers; Understand the 3 types of pyramids, biological magnification; Understand the human food chain; Review Fig. 25.2, 25.3, 25.6, 25.7

Ch. 26 - "The Biosphere" - Understand what the biosphere is; Know the general characteristics of the following biomes: freshwater, saltwater (coastal & open ocean), desert, tundra, grassland (savannah and prairie), chaparral, taiga, temperate deciduous forest and tropical rain forest; Define estuary, permafrost, deciduous and epiphyte; Understand effects of temperature & rain on biomes; Review 26.4,26.7,26.9,26.10,26.11,26.12,26.16, 26.17, 26.21, 26.22,

Essay Question - Write clearly and be organized. I will grade very strictly. 1. Human Population Growth: a) Discuss the history of man's population growth. How fast has the population increased? Give me dates and numbers if you can. b) What does the shape of the growth curve look like and what type of growth is this? How has the curve changed over time? c) What 3 factors contributed to the type of growth we have now? Explain how they had an effect. d) What is the size of the population today and what do you think man=s carrying capacity will be? Give me a number for AK@ - there is no right or wrong. e) Explain what factors might influence our growth in the future and cause it to slow down, stop or possibly increase.