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Question 1 (5 points) Ecologists are chiefly concerned with the...

Question 1 (5 points)


Ecologists are chiefly concerned with the ________ and ________ of living things in the environment.

Question 1 options:

ancestry; similarities

distribution; abundance

cells; molecules

behavior; genetics


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Question 2 (5 points)


The Karner blue butterfly lays its eggs on wild lupine plants. When the larvae hatch, they feed exclusively on the wild lupine. A study of this interaction occurs at what level of ecology?

Question 2 options:
population ecology
ecosystem ecology
community ecology
biosphere ecology


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Question 3 (5 points)


What are animal species called that exhibit long gestation periods, give birth to relatively large offspring, and maintain population numbers close to the habitat carrying capacity? 

Question 3 options:

K-selected

r-selected

q-selected

P-selected

Question 5 (5 points) 

A field ecologist is studying a sage plant (Salvia leucophylla) that grows wild in Southern California. She notices the characteristic uniform dispersion of the plants in all of the quadrats she has mapped out. What is a likely explanation for this dispersion pattern?

Question 5 options:

This plant drops its relatively heavy seeds straight to the ground immediately around it

This plant secretes a chemical that inhibits the growth of nearby plants

This plant relies on wind to disperse its relatively lightweight seeds

This plant relies on animals to disperse its seeds far from the mother plant


Save Question 6 (5 points) 
A population—birds, for example—that experiences a roughly uniform mortality rate across its lifespan will typically exhibit what type of survivorship curve?Question 6 options:
Type II, linear
Type I, convex
Type III, concave
Any of the three types


Question 7 (5 points)  All of the organisms living together in a particular habitat and their interactions with their non-living environment are called ____.Question 7 options:
communities
ecosystems
populations
abiotic factors

Save Question 8 (5 points) 

The principle that states that two different species cannot occupy the same niche in a given habitat is called what?

Question 8 options:

Pauli exclusion

competitive exclusion

mutual exclusion

intraspecific competition


Save Question 9 (5 points) 

If a population exhibits a death rate that exceeds its birth rate, it is likely to ________.

Question 9 options:

remain constant in size

increase in size

decrease in size

become an invasive species

Question 10 (5 points)  Which of the following statements about the carbon cycle is TRUE?Question 10 options:
Excess carbon that enter these ecosystems from fertilizer runoff and from sewage does cause excessive algae growth
Photosynthesis is an important metabolic process that moves carbon from the atmosphere into living organisms in the carbon cycle
Photosynthesis is an important metabolic process that moves carbon from living organisms into the atmosphere in the carbon cycle
Cellular respiration is an important metabolic process that moves carbon from the atmosphere into living organisms in the carbon cycle

Save Question 11 (5 points) 
What is the key difference between a foundation species and a keystone species in a given ecosystem?Question 11 options:
A foundation species exerts the most influence on maintaining biodiversity while a keystone species is most abundant.
A foundation species is usually the most abundant, and a keystone species exerts the most influence on maintaining biodiversity.
There is no difference—the terms are used interchangeably.
A foundation species is the least abundant, and a keystone species is the most abundant.

Save Question 12 (5 points) 

Limited resources is affecting population growth in a habitat. What type of modeling does best represent this scenario? 

Question 12 options:

logistic modeling

exponential modeling

linear modeling

climate modeling




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