FREE AND STUDY GAMES ABOUT BIO 118 EXAM 4

PDF Download

FREE AND STUDY GAMES ABOUT BIO 118 EXAM 4

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -62 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: Which of the following is the best way to test a hypothetical evolutionary classification among living organisms?

Answer:

analysis of DNA sequence

Question 2: Where is kudzu originally from?

Answer:

Japan Question 3: When you look at the spacing of humans on a global level, the population follows a(n) ________ distribution.

Answer:

clumped Question 4: One problem associated with using NPP to calculate the carrying capacity for humans is that

Answer:

it fails to take into account our need for other resources, such as water, clean air, and fuel.

Question 5: All the following experiments would be considered an ecological study EXCEPT

Answer:

the effect of a hormone on the rate of blood vessel formation.

Question 6: Which of the following is at the bottom of a trophic pyramid?

Answer:

producers

Question 7: Which of the following occurs after the creation of a new allele?

Answer:

The gene pool becomes more diverse.Question 8: At which time did the global human population start to exhibit obvious and dramatic exponential growth, with a growth rate of 2% (or more) per year?

Answer:

250 years ago Question 9: Extracts of the rosy periwinkle, Catharus roseus, have provided medicine with vincristine and vinblastine, drugs now available for treating cancer. The ability to find this species of plant and discover these drugs is a strong argument for

Answer:

preserving biodiversity.Question 10: Which of the following organisms would you expect to most readily become reproductively isolated, even in the absence of geographic isolation?

Answer:

grasses Question 11: The Cambrian explosion is a period in Earth's history when what significant event occurred?

Answer:

multicellular animals first appeared

Question 12: Apple maggot flies appear to be two separate races. What makes these races different?

Answer:

They have different allele frequencies.Question 13: In a particular county, there are 30 births and 20 deaths for every 1000 residents.What is the annual growth rate of this population?

Answer:

1.00%

Question 14: Exponential growth, when graphed, appears as

Answer:

a J curve Question 15: One species of plant produces flowers when nights are 10 hours long. A related species comes into flower when nights are 9 hours long. This is an example of

Answer:

temporal isolation.Question 16: All the following are directly involved in calculating net primary productivity

EXCEPT

Answer:

the amount of chemical energy required by plants to support themselves

Question 17: A population that's exhibiting exponential growth

Answer:

will have growth proportional to the current total.Question 18: Which of the following represents the ecological niche of an organism?

Answer:

the predation on mice by a snake Question 19: As the size of a population approaches the carrying capacity of its environment, all the following are true EXCEPT

Answer:

birth rates become proportionally much greater than the death rates.

Question 20: Which one of the following shows the steps of speciation in the correct order?

Answer:

geographic isolation, evolutionary changes, reproductive isolation Question 21: An organism is described that can live in very high temperature water. This organism is most likely a member of the

Answer:

Archaea domain.Question 22: All the following must be assumptions of the mark-recapture method EXCEPT

Answer:

the population size changes dramatically between the time of mark and recapture.

Question 23: What is the result of adaptive radiation?

Answer:

the diversification of one or a few species into a varied group of descendants Question 24: Plants possess many compounds that affect animals. Which of the following is the most likely reason?

Answer:

Plants that produce chemical defenses were successful against plant-eating animals.Question 25: Scientists have used the fossil record to estimate the average length of time that a species inhabits the Earth. This estimate is useful for assessing the impact of humans on the Earth's biological diversity because it can

Answer:

estimate how many species extinctions are caused by human activity.Question 26: A population has reached the carrying capacity of the environment when

Answer:

the environment can't support a further increase in the population.

Question 27: The most important ecological role of bacteria is

Answer:

as decomposers.