Biol 2200 Exam 2 Exam Questions With Correct Verified Answers | 100% Pass (A+ Certified)

Ecology Answer the study of the relationship of organisms with their environment Evolution by natural selection Answer how a population adapts to its environment Population ecology Answer where we find them and change in abundance Community ecology Answer bring interactions in Distribution Answer where organisms are found is determined by ability to persist in different environments Factors that affect range Answer temperature, food and habitat requirements, interactions Ranges change... Answer as environment changes Uniform distribution Answer direct interactions between individuals - spaced evenly Random distribution Answer spacing independent of other individuals - no pattern Clumped distribution Answer individuals aggregate when environment varies When there are uneven resources... Answer the organisms clump near the resources How do abiotic and biotic factors affect the distribution of the invasive argentine ant? Answer abiotic - moisture (dry vs irrigated) biotic - native ants (present vs absent) measure - activity at baits Dispersal Answer movement of organisms to new habitat Why do organisms disperse? Answer more resources, increased competition, babies move away from mom and dad Plant dispersal Answer need help - some are moved by wind, or stick to biotic factors when they move Animal dispersal Answer disperse vast distances on their own Life tables Answer describe demography of an organism - age structure and how a population is doing Type 1 survivorship Answer - low juvenile mortality - a lot of babies make it, then they die later in life Examples of type 1 Answer humans, elephants, gorillas Type 2 survivorship Answer - constant mortality throughout life - about the same number of individuals that survive don't survive Examples of type 2 Answer birds, mice, butterflies Type 3 survivorship Answer - high juvenile mortality - more babies die, then the ones that make it survive Examples of type 3 Answer oysters, sea turtles, insects Factors that contribute to species fitness Answer survival, adult size, age of reproductive maturity, number of offspring that are produced and survive, investment in offspring Trade-off Answer something increases at the expense of something else Trade-off (offspring size and number) Answer if plants produce larger seeds, they produce fewer seeds Trade-off (growth and reproduction) Answer in years where there are large amounts of seeds, the following year the seed production will decrease Trade-off (reproduction and survival) Answer they manipulated the number of offspring in a nest, to test if the amount of energy they use on their offspring affects their lifespan - we do see a decline in survivorship Large organisms