1) The lowest amount of seasonal variation in temperature is most likely to be s
ID: 268123 • Letter: 1
Question
1) The lowest amount of seasonal variation in temperature is most likely to be seen over
oceans at low latitudes.
land at mid latitudes.
land near oceans at low latitudes.
land in the middle of a continent at high latitudes.
oceans at high latitudes.
Answer:
2) In many species of Yucca plants, plants of any genotype that are reared in a cold environment tend to be smaller than plants of the same genotype raised in a warm environment. Is this an adaptation?
Yes, because phenotypic plasticity is usually adaptive.
Yes, but only if there is evidence of allometry.
No, because phenotypic plasticity is not usually adaptive.
Maybe; we need further experiments examining whether the differences in size are genetic.
Maybe; we need further experiments examining fitness (survival and reproduction) of differently sized plants.
Answer:
3) Assuming that the body shape of an animal is spherical, a considerable increase in body size would _______ the surface area-to-volume ratio, and the ability to exchange heat with the environment would _______.
increase; increase
increase; stay about the same
increase; decrease
decrease; increase
decrease; decrease
Answer:
4) Which evolutionary process is most likely to slow downthe process of speciation?
Directional selection
Disruptive selection
Gene flow
Genetic drift
Mutation
Answer:
5) Which of the following factors can cause a population to exhibit cyclic dynamics?
Interactions with predators in the absence of a prey carrying capacity.
Low values of rd.
A time lag – the rate of population growth responds to population size with a lag.
A and C only.
All of the above.
Answer:
6) Select the greenhouse gas that fits the following description: It is the largest contributor to greenhouse warming. Over the course of human history, its concentration in the atmosphere has not changed much, but its concentration varies considerably from place to place.
Carbon monoxide
Carbon dioxide
Methane
Nitrous oxide
Water vapor
Answer:
7) Which of the following statement best represents the difference between the exponential growth equation and the logistic growth equation for population dynamics?
The logistic model has constant birth and death rates, whereas the exponential model has density-dependent birth and death rates.
The exponential model has pulsed bir8hs and deaths (e.g., seasonal reproduction), whereas the logistic model has continuous births and deaths.
The exponential model lacks a time lag, whereas the rate of population growth responds to population size with a lag in the logistic equation.
The logistic model has density-dependent birth and death rates, whereas the exponential model lacks a carrying capacity.
None of the above
Answer:
8) You have been hired to manage a small nature preserve on an island in the South Pacific. Suppose you wanted to determine whether you had adequately sampled the species diversity of birds in the preserve. Which of the following results would lead you to conclude that your sampling methods had notadequately assessed bird species diversity?
A high Shannon index value
A low value of species richness
A linearly increasing species accumulation curve
A species accumulation curve that leveled off to a flatline (i.e., saturated)
A high alpha diversity
Answer:
____
9) Which of the following is leastlikely to predict the success of a species invasion?
A species invading a more diverse native community is more likely to be successful than a species invading a less diverse native community.
A species with more introduction events is more likely to successfully establish than a species with fewer introduction events.
Hybridization with closely related species can provide an influx of adaptive genetic diversity that increases invader success.
A species may escape natural enemies from its home range when introduced to a novel environment.
All of the above factors contribute the success of invasions.
Answer:
10) Which of the following is a commonly documented consequence of the lossof species diversity?
A. Increased primary productivity.
B. Increased ecosystem services.
C. Reduced resilience of the community.
D. Reduced likelihood of species invasion.
E. None of the above.
Explanation / Answer
Q1:- Option D
Explanation:- land in the middle of a continent at high latitudes observe lowest seasonal temperature variations.
Q2;- Option A
Explanation:-Yes, this is an adaptation because phenotypic plasticity is usually adaptive.
Q3:- Option A
Explanation:- Assuming that the body shape of an animal is spherical, a considerable increase in body size would increase the surface area-to-volume ratio, and the ability to exchange heat with the environment would increase.
Q4:- Option C
Explanation:- Gene flow slows down process of speciation
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