FREE AND STUDY GAMES ABOUT BIO 2 POWERPOINT 4

PDF Download

FREE AND STUDY GAMES ABOUT BIO 2 POWERPOINT 4

EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -105 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: Starting from two bacteria, what is the size of a population of bacteria at the end of a two-hour time period if they reproduce by binary fission every twenty minutes?(Assume unlimited resources and no mortality.)

Answer:

128 Question 2: Two species of yeast are capable of persisting indefinitely on agar in the lab, but when they are grown together under similar conditions, only a single species remains after a few days. This is an illustration of

Answer:

intraspecific competition.Question 3: After the introduction of the American mink into Belarus, the native European mink became larger, and the American mink gradually decreased in size. Which of the following is the most likely explanation for this observation?

Answer:

Character displacement

Question 4: Discrete subpopulations linked together by regular movement of individuals between them is called a(n)

Answer:

metapopulation Question 5: Amur honeysuckle, an Asian native plant, has spread through SW Ohio since 1960.This is an example of

Answer:

range expansion Question 6: Which of the following is not a demographic process that determines the number of individuals in a population?

Answer:

Migration

Question 7: Resource partitioning

Answer:

minimizes competition Question 8: In July 2010 many states passed laws banning phosphate in dishwasher detergents.All dishwashing detergent manufacturers in the US stopped using them. Phytoplankton, some of them green algae, are typically involved in eutrophication and are ~50% carbon by

Answer:

Macroscopic phytoplankton have cuticles to prevent water loss.Question 9: As you study two closely related predatory insect species, the two-spot and the three-spot avenger beetles, you notice that each species seeks prey at dawn in areas without the other species. However, where their ranges overlap, the two-spot avenger beetl

Answer:

resource partitioning Question 10: Species are often composed of networks of distinct populations called metapopulations. Metapopulations occur in areas where

Answer:

suitable habitat is patchily distributed and separated by areas of unsuitable habitat.

Question 11: Suppose seedlings of a plant emit a chemical that reduces the growth of other individuals around them. This would most likely result in the plants having a _______ dispersion pattern.

Answer:

uniform Question 12: Many tree species and mycorrhizal fungi cannot survive unless they are associated with one another suggesting a _______ relationship

Answer:

mutualistic relationship Question 13: Shown is an electron micrograph of part of a myofibril from a relaxed muscle fiber.Which of the labeled regions will not shorten when the muscle contracts?

Answer:

A band

Question 14: In bottom-up control of trophic structure

Answer:

control is exerted by primary producers

Question 15: When two species experience niche overlap,

Answer:

natural selection may result in character displacement

Question 16: Community

Answer:

all organisms in an ecosystem Question 17: If the rate of increase (r) of a population is zero, then the population

Answer:

is stable in size Question 18: A population is growing continuously. The carrying capacity of the environment is 1000 individuals and its maximum growth rate, rmax, is 0.50. Determine the population growth rates based on a population size of 200, 500, and 1000

Answer:

80, 125, 0

Question 19: Which of the following represents the correct ranking of dispersion patterns, from the greatest to least average distance between one individual and its nearest neighbor?

Answer:

Uniform, Random, Clumped Question 20: Which one of the following statements about the trophic cascade in the sea otter-sea urchin-kelp communities along the West Coast of North America is false?

Answer:

Increased orca (killer whale) predation on sea otters is linked to more profuse growth of the kelp forests.Question 21: With respect to atomic matter, Earth is mostly a(n) _______ system. With respect to energy flow, Earth is a(n) _______ system.

Answer:

closed;open

Question 22: High species richness

Answer:

Less change in species composition,Less change in biomass,More resistance to invasion,Less affected by drought,Greater N uptake and productivity Question 23: A volcano in Hawaii has erupted and completely covered a small island with lava.Following this disturbance, what process is likely to proceed?

Answer:

Primary succession Question 24: Why is net primary production (NPP) a more useful measurement to an ecosystem ecologist than gross primary production (GPP)?*

Answer:

NPP represents the stored chemical energy that is available to consumers in the ecosystem.Question 25: When species occupy the same niche, they must compete with each other for limited resources. What is likely to occur in the long-term if two species occupy the same niche?

Answer:

Exclusion of one species from the entire niche, but not the other species & Division of the niche into two subdivisions, each dominated by a single species