FREE AND STUDY GAMES ABOUT APES UNIT 4 EXAM

PDF Download

FREE AND STUDY GAMES ABOUT APES UNIT 4 EXAM

QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -36 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: what are the 3 most nutrient rich environments

Answer:

tropical rainforest, coral reefs, and the deep sea Question 2: distinguish between top-down control and bottom up control of a population

Answer:

top down is where the predator eats to much of the prey killing off alot of the prey which then results in the population decrease of the predator. bottom up is when the prey dies off due to own causes killing off alot of the prey due to lack of food

Question 3: how do species diversity vary with

1) latitude in terrestrial communities, 2)ocean depth, 3) pollution in aquatic systems

Answer:

1most species diversity decrease steadily as they move from the equator 2diversity increases from the surface to 2000 meters, until sea bottom3decrease in species diversity and abundance in aquatic places with more pollution

Question 4: primary succession

Answer:

ecological succession in an area in which natural vegetation has been removed or destroyed, but the soil is not destroyed

Question 5: ecological succession

Answer:

process in which communities of plant and animal in a particular area are replaced over time by different more complex communities

Question 6: interspecific competition

Answer:

members of two or more species trying to use the same limited resources in an ecosystem

Question 7: interference competition

Answer:

situation in which one species limits access of another species to a resource, regardless of whether the resource is abundant or scarce.

Question 8: family planning

Answer:

providing information, clinical services and contraceptive to help people choose the number and spacing of children they wanted to have

Question 9: why is replacement level fertility higher then 2

Answer:

because families often have more then 2 children while some have 2 and some have less. that is the average of all of them Question 10: what 2 factors determine the species diversity found on an isolated ecosystem such as an island?

Answer:

size and degree of isolation

Question 11: list characteristics of r-selected

Answer:

capacity for high intrinsic rate of increase

Question 12: theory of biodiversity

Answer:

the number of species found on an island is determined by 2 things

• rate at which new species immigrate to the island.
• the rate at which species become extinct.

Question 13: keystone species

Answer:

species that play roles affecting many organisms in an ecosystem

Question 14: life expectancy

Answer:

average number of years a new born infant can be expected to live

Question 15: carrying capacity

Answer:

max population of a particular species that a given habitat can support over a period of time

Question 16: indicator species

Answer:

species that serve as early warnings that a community or ecosystem is being degraded

Question 17: what is the age structure of a population

Answer:

it is the proportion of the population at each age level Question 18: how can a population over shoot its carrying capacity? what are the consequences for doing so?

Answer:

by using up all its resource base. the death rate increases while the birth rate decreases. this is called dieback or crash. this happens unless u move locations to were the resource is abundant or changes resources needed

Question 19: intraspecific competition

Answer:

two or more organisms of a single species trying to use the same limited resources in an ecosystem

Question 20: what is the precautionary principle

Answer:

when there is a scientific uncertainty around potentially, seriously harmful chemicals and technology, they take precautionary measures to help prevent harm towards humans and the environment

Question 21: native species

Answer:

species that normally live and thrive in a particular ecosystem

Question 22: nonnative/ exotic species

Answer:

species that migrate into an ecosystem or a deliberately or accidentally introduced into an ecosystem by humans

Question 23: resource partitioning

Answer:

process of dividing up resources in an ecosystem so species with similar needs use the same scarce resources at different times

Question 24: edge effect

Answer:

existence of a greater number of species and a higher population density in a transition zone between two ecosystems that in either adjacent ecosystem

Question 25: survivorship curve

Answer:

graph showing the number of survivors in different age groups for a particular species

Question 26: symbiosis

Answer:

any intimate relationship or association between members of two or more species