Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Textbook Question
Chapter 53.3, Problem 2CC
WHAT IF? → Given the latitudinal differences in sunlight intensity (see Figure 52.3), how might you expect the
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please Describe the data in Figure 2.
Figure 2. Pre-dawn and midday leaf water potential (Ψleaf) for the two species at different dates throughout the year.
Q55: Mangrove trees and seagrasses along coastal areas near coral reefs are known to trap sediment (silt) before it makes its way to and clouds the water over reefs. Development of such coastal areas near coral reefs often results in the destruction of these plants. What is the likely consequence of this vegetation loss for the corals? Briefly explain.
Q4.14. Below are two graphs showing zero growth isoclines in phase space for plant species A
and B, with insect herbivores absent (left) and present (right). Based on your interpretation of
these graphs, which of the following is the most likely impact of insect herbivory on the
competitive relationship between Species A and B?
Insect Herbivores Absent
Insect Herbivores Present
SPECIES B
Kalanga
KR
Kalama
K
SPECIES A
SPECIES B
K₂
KlaAB
K₁ K₂/OBA
SPECIES A
Herbivory promotes coexistence of Species A and B.
Herbivory results in competitive exclusion of Species A by Species B.
Herbivory results in competitive exclusion of Species B by Species A.
Herbivory has no effect on competition between Species A and B.
Chapter 53 Solutions
Campbell Biology
Ch. 53.1 - DRAW IT Each female of a particular fish species...Ch. 53.1 - Prob. 2CCCh. 53.1 - Prob. 3CCCh. 53.2 - Explain why a constant per capita rate of growth...Ch. 53.2 - Prob. 2CCCh. 53.2 - Prob. 3CCCh. 53.3 - Explain why a population that fits the logistic...Ch. 53.3 - WHAT IF? Given the latitudinal differences in...Ch. 53.3 - Prob. 3CCCh. 53.4 - Identify three key life history traits, and give...
Ch. 53.4 - Prob. 2CCCh. 53.4 - Prob. 3CCCh. 53.5 - Prob. 1CCCh. 53.5 - Prob. 2CCCh. 53.5 - WHAT IF? Suppose you were studying a species that...Ch. 53.5 - Prob. 4CCCh. 53.6 - How does a human population's age structure affect...Ch. 53.6 - How have the rate and number of people added to...Ch. 53.6 - WHAT IF? Type "personal ecological footprint...Ch. 53 - Gray whales (Eschrichtius robustus) gather each...Ch. 53 - Suppose one population has an r that is twice as...Ch. 53 - Prob. 53.3CRCh. 53 - Prob. 53.4CRCh. 53 - Density-dependent factors regulate population...Ch. 53 - The human population is no longer growing...Ch. 53 - Population ecologists follow the fate of same-age...Ch. 53 - A population's carrying capacity (A) may change as...Ch. 53 - Scientific study of the population cycles of the...Ch. 53 - Analyzing ecological footprints reveals that (A)...Ch. 53 - Based on current growth rates, Earth's human...Ch. 53 - The observation that members of a population are...Ch. 53 - According to the logistic growth equation...Ch. 53 - During exponential growth, a population always (A)...Ch. 53 - Prob. 9TYUCh. 53 - Prob. 10TYUCh. 53 - EVOLUTION CONNECTION Contrast the selective...Ch. 53 - Prob. 12TYUCh. 53 - Prob. 13TYUCh. 53 - WRITE ABOUT A THEME: INTERACTIONS In a short essay...Ch. 53 - SYNTHESIZE YOUR KNOWLEDGE Locusts (grasshoppers in...
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- Explain the mechanisms for which the leaf water potential would be more negative at midday than at pre-dawn. Figure 2. Pre-dawn and midday leaf water potential (Ψleaf) for the two species at different dates throughout the year.arrow_forwardEcologyarrow_forwardPlants vary widely in how they allocate biomass to roots, leaves and stems. Two key measures of plant allocation in an ecosystem context are leaf area index (LAI) and the root to shoot ratio. a) Define each of these measures and discuss how variation in each measure can influence net primary production (NPP). b) Pick one of the measures and discuss how and why you would expect it to vary in relation to an abiotic factor of your choice. Underline the abiotic factor you choose.arrow_forward
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- Balancing palm harvest versus the incidental killing of parrots Now let's first evaluate whether harvesting palms at their optimal level can be tolerated by the parrot population, which is incidentally affected when palms felled inadvertently enclose nesting parrots. If the palm populations can be harvested in a sustainable manner at the same rate at which they can potentially grow, then what was the estimated maximum sustainable annual harvest rate for the palms? What was it for the parrots? Based on data originally given in the scenario, recall that the area is 10,000 km2, that 10 km2 hosts 1 parrot (of any age) and 1,000 palms, that felling every thousandth palm kills a nesting pair of parrots, and that carrying capacities for each species are twice their current densities. You now have all the information you need to address the question at hand: 12. If the palm population is harvested at its maximum sustainable limit, will the parrot population be at risk? Please explain how you…arrow_forwardA. What are the benefits of shallow rooting and showy inflorescences to desert plants? B. With warm temperatures and adequate rainfall why is light a limiting factor in tropical rain forests? C. With precipitation averaging 75-150 cm a year, why is water availability limited for part of the year in a temperate deciduous forest? Carrow_forwardQ- You are studying the growth of a particular species of plant and you notice that as time passes, your plants’ root: shoot ratios consistently decrease. In this system, is the limiting resource an above-ground resource, or a below-ground (soil) resource? A- Above ground; because the plants are allocating more resources to root growth B- Above ground; because the plants are allocating more resources to shoot growth C- Below ground; because the plants are allocating more resources to root growth D- Below ground; because the plants are allocating more resources to shoot growtharrow_forward
- The figure below shows the degree of stomatal opening in three plant species during the course of a single 24-hour day. Comparing Species A and Species B in the figure above, which statement below is correct? Species A and Species B are similar at preventing water lost by transpiration Species A is better at preventing water lost by transpiration Species B is better at preventing water lost by transpirationarrow_forwardplease explain how plants could end up “starving” for carbon during drought?arrow_forwardPlease explainarrow_forward
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