/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q1TYU One characteristic that distingu... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 56: Q1TYU (page 1258)

One characteristic that distinguishes a population in an extinction vortex from most other populations is that

(A) it is a rare, top-level predator.

(B) its effective population size is lower than its total population size.

(C) its genetic diversity is very low.

(D) it is not well adapted to edge conditions.

Short Answer

Expert verified
  1. The option 鈥渋t is a rare, top-level predator鈥� is false.
  2. The option 鈥渋ts effective population size is lower than its total population size鈥� is false.
  3. The option 鈥渋ts genetic diversity is very low鈥� is true.
  4. The option 鈥渋t is not well adapted to edge conditions鈥� is false.

Step by step solution

01

Extinction vortex

Extinction vortex involves forces that act on small populations. It causes the population to enter into a vortex and undergo a further decrease in population size to a state where the population's long-term survival is threatened.

It drives a population towards the extinction path.

02

Explanation of option ‘(A)’

A top-level predator preys on other organisms but is not preyed upon. They occupy the highest trophic level and the top of the food chain, maintaining the ecological balance.

Thus, a rare top-level predator is not a distinguishing characteristic for extinction vortex.

Therefore, the given statement is false.

03

Explanation of option ‘(B)’

The effective population size is the number of individual reproducing organisms required to ensure a population's survival. Total population size is simply the number of species present in a population.

Having an effective population means having reproducing organisms to keep the population of species alive.

Thus, an effective population size lower than its total population size does not threaten species survival.

Therefore, the given statement is false.

04

Explanation of option ‘(C)’

Low genetic diversity is very sensitive to diseases and pathogens. Lower the genetic diversity; more is the population's risk of getting hit by an infection and lowers the chance of survival.

Thus, a low genetic diversity can push small populations into an extinction vortex.

Therefore, the given statement is true.

05

Explanation of option ‘(D)’

Edge conditions prevail along habitat boundaries. Fragmentation leads to more edge conditions and poses some serious problems for the population dwelling there.

However, it is not necessarily a distinguishing characteristic for extinction vortex.

Thus, edge conditions could pose problems for the population but is not a characteristic of an extinction vortex.

Therefore, the given statement is false.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

EVOLUTION CONNECTION The fossil record indicates that there have been five mass extinction events in the past 500 million years (see Concept 25.4). Many ecologists think we are on the verge of entering a sixth mass extinction event. Briefly discuss the history of mass extinctions and the length of time it typically takes for species diversity to recover through the process of evolution. Explain why this should motivate us to slow the loss of biodiversity today.

Question: This computer model shows the four parts of ATP synthase. Each part consists of several polypeptide subunits (the structure in gray is still an area of active research). Using Figure 9.14 as a guide, label the rotor, stator, internal rod, and catalytic knob of this molecular motor.

Question: Phosphofructokinase is an enzyme that acts on fructose-6-phosphate at an early step in glucose breakdown. Regulation of this enzyme controls whether the sugar will continue on in the glycolytic pathway. Considering this graph, under which condition is phosphofructokinase more active? Given what you know about glycolysis and regulation of metabolism by this enzyme, explain the mechanism by which phosphofructokinase activity differs depending on ATP concentration. Explain why it makes sense that regulation of this enzyme has evolved so that its works this way.

Of the following statements about protected areas that have been established to preserve biodiversity, which one is not correct?

(A) About 25% of Earth鈥檚 land area is now protected.

(B) National parks are one of many types of protected areas.

(C) Management of a protected area should be coordinated with management of the land surrounding the area.

(D) It is especially important to protect biodiversity hot spots.

Question: The final electron acceptor of the electron transport chain that functions in aerobic oxidative phosphorylation is

  1. oxygen
  2. water
  3. NAD+
  4. pyruvate
See all solutions

Recommended explanations on Biology Textbooks

Organ Systems

Read Explanation

Genetic Information

Read Explanation

Cell Cycle

Read Explanation

Ecosystems

Read Explanation

Biological Processes

Read Explanation

Heredity

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.