Campbell Biology in Focus
3rd Edition
ISBN: 9780134710679
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Rebecca Orr
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 41, Problem 3TYU
Summary Introduction
Introduction:
As per the bottom-up model, an ecosystem’s structure is controlled by the producers and supply of nutrients. The top-down model is also called as the trophic cascade.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
The figure shows examples of possible disturbance intensity (y-axis) and frequency (x-axis) combinations. The type of succession occurring after disturbance A is
the type of succession occurring after disturbance C is
and
High
A
B
C
D
Low
Low
High
Frequency
A. primary; climax
B. primary; secondary
C. primary; little succession occurs
D. secondary; primary
E. secondary; climax
Intensity
Which of the following is the greatest threat to the world's Grasslands?
A. Overharvesting
B. Agriculture
C. Pollution
D. Invasive Species
Which of the following is a common edge effect in areas of deforestation?
a.
Species have higher access to mates.
b.
Species are more vulnerable to predation
c.
All of these are correct.
d.
There is an increase in forested habitats.
j
Chapter 41 Solutions
Campbell Biology in Focus
Ch. 41.1 - Explain how interspecific competition, predation,...Ch. 41.1 - According to the principle of competitive...Ch. 41.1 - MAKE CONNECTIONS Figure 22.13 illustrates how a...Ch. 41.2 - What two components contribute to species...Ch. 41.2 - How is a food chain different from a food web?Ch. 41.2 - WHAT IF? Consider a grassland with five trophic...Ch. 41.2 - MAKE CONNECTIONS Rising atmospheric CO2 levels...Ch. 41.3 - Why do high and low levels of disturbance usually...Ch. 41.3 - During succession, how might the early species...Ch. 41.3 - WHAT IF? Most prairies experience regular fires,...
Ch. 41.4 - Describe two hypotheses that explain why species...Ch. 41.4 - Describe how an islands size and distance from the...Ch. 41.4 - WHAT IF? Based on MacArthur and Wilsons island...Ch. 41.5 - What are pathogens?Ch. 41.5 - Prob. 2CCCh. 41 - The feeding relationships among the species in a...Ch. 41 - Prob. 2TYUCh. 41 - Prob. 3TYUCh. 41 - Community 1 contains 100 individuals distributed...Ch. 41 - Prob. 5TYUCh. 41 - SCIENTIFIC INQUIRY An ecologist studying plants in...Ch. 41 - FOCUS ON EVOLUTION Explain why adaptations of...Ch. 41 - FOCUS ON INFORMATION In Bateslan mimicry, a...Ch. 41 - Prob. 9TYU
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which of the following would BEST help conserve biodiversity. CHOOSE ONLY ONE a. Plant native trees b. Engage in aquaculture c. Backyard farmingarrow_forwardHabitat fragmentation results from human activities that change large blocks of landscape, leading to many negative effects on species and ecosystems. Which of the following is not one of the possible consequences of fragmentation? A. reduction of available habitat O B. increasing degradation of habitat patches C. increasing wind speeds and temperatures at patch edges D. spatial isolation of patches E. increase in top predators present in patchesarrow_forwardAssuming all other factors are equal, which statement about the success of core natural areas as a conservation measure is false? OA. Areas with compact shapes are superior to areas with less compact shapes. B. One large reserve is superior to a few small reserves with the same total area. C. Several reserves far apart are superior to the same number of reserves close together. O D. Reserves connected by habitat corridors are superior to unconnected reserves. Areas encompassing a range of vegetation types are superior to those with a uniform composition. E.arrow_forward
- In a fragmented rainforest, researchers notice a change in plant species composition near the edges compared to the interior. What might be causing this shift? Group of answer choices: A. Lower temperatures at the edges supporting cold-tolerant plant species B. Increased light and wind exposure at the edges favoring the growth of sun-loving and wind-dispersed plant species C. Higher soil moisture at the edges leading to the proliferation of water-demanding plant species D. Increased competition for resources at the edges leading to a decline in plant diversityarrow_forwardIn Alaska Orcas (Killer Whales) have recently started eating sea otters in large numbers. Populations of sea urchins (food of sea otters) have increased. Sea otters eat algae. The kelp forests have started to disappear. This is an example of which of the following. Group of answer choices a. random changes in a community b. a limiting nutrient c. bottom up control of a community d.top down control of a communityarrow_forwardThe part of the non-farm sector that uses agricultural output as an input is example of Select one: a. Horizontal Diversification O b. Backward linkages c. Forward ward linkages O d. Vertical Diversificationarrow_forward
- The Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services published a report in 2019 that described several negative effects that humans have had on biodiversity and ecosystem services. They highlighted and ranked five drivers of these negative effects. Which of the following has had the greatest overall impact on biodiversity and ecosystem services? A. Pollution B. Direct exploitation of organisms C. Invasive species D. Climate change E. Changes in land use and sea usearrow_forwardThe Shannon Index, H', for community #1 is 1.7; for community #2 it is 1.5. We can conclude that community #1 has a higher than community #2. a. all of these b. species diversity c. species richness d. species evennessarrow_forwardEach species has a particular niche within a community. This niche is defined by which two sets of factors? a. Net primary productivity and physical environment b. Functional role and net primary productivity c. Net primary productivity and biological environment d. Physical environment and functional rolearrow_forward
- By a currently favored hypothesis, species richness of a community is greatest when physical disturbances are of_____ intensity and frequency. a. low c. high b. intermediate d. variablearrow_forward1. Fishing, hiking, hunting, and camping are examples of which ecological service? a. Cultural Service b. Regulating service c. Supporting service d. Provisioning service 2. Which of the following is an example of ex-situ conservation? a. Mt. Apo National Park b. Philippine Tarsier Sanctuary c. Community seed banks d. sacred groves 3. Which of the following best describes the trend of biodiversity on the Earth’s surface? a. It decreases towards the equator b. It increases towards the equator c. It remains the same throughout the planet d. It is not affected by the change in latitudearrow_forwardThe figure below shows the growth of two species in two habitats, both when the other species is present and when it is absent. What kind of interaction is occurring between these two species? (Consider both habitats, not just the interaction within one particular habitat.) Answer choices: A. Mutualism B. Conditional C. Commensalism D. Competition E. Parasitismarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage LearningConcepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College
Biology (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
DIVERSITY IN PLANTS; Author: 7activestudio;https://www.youtube.com/watch?v=uJrks56FQIY;License: Standard YouTube License, CC-BY
Biology- Plant Kingdom - Diversity in Living Organisms - Part 4 - English - English; Author: Bodhaguru;https://www.youtube.com/watch?v=QFgQ74EvfDQ;License: Standard YouTube License, CC-BY