Species Abundance and Diversity
A community with high species richness has an even distribution of individuals in each species
A. True
B. False
B. False
True or false? A praying mantis that feeds upon two different herbivorous grasshoppers is omnivorous.
A. True
B. False
B. False
Grouse birds and bears both feed on huckleberries. However, for safety reasons, the grouse only feeds on the berries when the bear is not present. Which type of competition is this?
A. Indirect competition/exploitation
B. Direct competition
A. Indirect competition/exploitation
Which community has the highest species evenness?
A. A community with one species that has 20 individuals and the rest of the species have 5 individuals
B. A community with 2 individuals per species
C. A community with 5 individuals per species
D. Both B and C
D. Both B and C
Which of the following matches the marginal value theorem?
A. A mouse moves to an area with lower quality cheese to avoid competition in the area with better cheese
B. A squirrel remains on DU campus to forage because Washington Park is too far
C. A bird stops eating seeds when the handling time to open them becomes too long
D. A caterpillar stops eating leaves because it gets too full to eat any more
B. A squirrel remains on DU campus to forage because Washington Park is too far
A crow scares a blue jay away from a broken egg that they both want to eat by squawking loudly. Is this intraspecific competition or interspecific competition?
A. Intraspecific competition
B. Interspecific competition
B. Interspecific competition
Which of the following is true about IDH theory?
A. When there is high disturbance, diversity is high
B. When there is low disturbance, diversity is high
C. When there is an intermediate amount of disturbance, diversity is high
D. When there is an intermediate amount of disturbance, diversity is low
C. When there is an intermediate amount of disturbance, diversity is high
A racoon finds that there is an abundance of delicious food waste outside of a college dorm. As a result, the racoon brings their many friends and soon the area is overrun by raccoons. Which type of response is this?
A. Type I functional
B. Type II functional
C. Type III functional
D. Numerical
D. Numerical
Which type of species interaction is this? A tiny bird rides on the back of an elephant which helps protect it from predators
A. Mutualism
B. Commensalism
C. Ammensalism
D. Neutralism
B. Commensalism
Which of the following examples comprises a guild?
A. Crickets because they are in the same taxonomic group
B. Organisms that feed upon the same flowers
C. Organisms that are in the same trophic level
D. Trees because they have similar structures
B. Organisms that feed upon the same flowers
C could technically be true but not specific enough to be a guild
An adolescent cheetah is hunting alone for the first time. At first the cheetah has very few successful prey kills, but as the cheetah encounters more prey, the cheetah learns how to hunt better and thus eats more prey. What type of functional response is this?
A. Type I
B. Type II
C. Type III
C. Type III
An ecologist notices two different hummingbird species that have the same beak length and forage on the same flowers. Over time, he notices that Species 1 has a smaller beak length and Species 2 has a longer beak length and that they now forage on different flowers. Which of the following matches the phenotypic change in beak length?
A. Genetic drift
B. Resource partitioning
C. Niche partitioning
D. Character displacement
D. Character displacement
If I wanted to compare how similar the composition of frog species' are across pond 1 and pond 2 in the same park, which diversity measure should I use?
A. Alpha
B. Beta
C. Gamma
B. Beta
A snail eats lettuce that is 10 calories. Because they are so slow it takes 30 seconds to handle the lettuce. What is the profitability of the lettuce?
A. 3 cal/s
B. 0.33 cal/s
C. 30 cal/s
D. Cannot say based on the information given.
B. 0.33 cal/s
Say there is a population of Species 1 turtles. Due to humans, 150 individuals of species 2 turtles are introduced into this area. The alpha value for the two species is 0.75. What is the equivalent number of Species 1 individuals to the 150 species 2 individuals added to the population? (Hint: you are essentially converting Species 2 turtles into Species 1 turtles)
A. 150
B. 38
C. 113
D. 75
C. 113