Introduction to Ecology
Introduction to Ecology 2
Understanding Organisms
Natural Selection & Evolution
Natural Selection & Evolution 2
100
A scientist measured an increase in nitrous oxide in the atmosphere. This increase would result in
an increase in the greenhouse effect.
100
Kudzu is a vine that was brought to the United States from Japan to prevent erosion. Once here, kudzu became invasive. What role does kudzu most likely play in the environment in the United States?
Kudzu outcompetes native plants for sunlight and nutrients.
100
Which scientist disproved the idea that life comes from nonlife?
Louis Pasteur
100
Which is accurate about the six kingdoms?
Four are eukaryotes, and two are prokaryotes.
100
Which of the following is an example of adaptive radiation?
One population of lizards forms 15 separate species over a short time.
200
Which is most likely a source of air pollution?
CFCs
200
Which is a limiting nutrient for plant growth?
nitrogen
200
Which organism is an animal-like protist?
amoeba
200
Which most clearly shows evolutionary relationships between species?
phylogenetic tree
200
Male peacocks have large colorful tails that they spread in a fan shape to attract females during courtship. Peahens (female peacocks) are more likely to mate with males that have larger and more colorful tails. As a result, few peacocks have tails with dull coloring.
natural selection
300
Which type of process occurred in the ecosystem that was affected by the 1988 fires in Yellowstone Park, which destroyed most of the vegetation but left the soil intact?
secondary succession
300
Why is water considered to be abiotic?
because it is not living and never lived
300
There is an algal bloom in a bay in a populated area. As the leading marine biologist in the area, what is the most important thing to do, based on scientific evidence about such blooms?
warn people about which food is safe to eat
300
A rynchosaur, an extinct animal that is known only from fossils. There has been much debate about the classification of these creatures. Some scientists suggest that they belong with primitive amphibians, and some think they are related to snakes and lizards. The data equally support both cases.
Draw two cladograms, both showing the traits, and leave it as a hypothesis.
300
Which of the following examples can cause gene flow between populations?
bird droppings that contain seeds from a different location
400
A Russian citizen has illegally obtained a Siberian tiger and is trying to sell the tiger’s fur in the United States. What treaty does this violate?
CITES
400
Which of the following lists the levels of organizational hierarchy from most complex to least complex?
biosphere, community, organism
400
Plant reproduction requires the presence of auxins, as well as a large amount of sugar for energy. Which two main plant tissues work together to release sugar and carry hormones so that reproduction can take place?
ground and vascular
400
When comparing dogs to wolves, scientists found evidence that supports the idea they come from a common ancestor. Which combination of evidence would most strongly support this idea?
comparable anatomies, similar development, and similar DNA
400
Which is a requirement for natural selection to occur?
heritable variations for some traits
500
A forest fire destroys an area. A small population of trees and a large population of birds are both affected. Which type of limiting factor causes this?
density independent
500
A biologist counts the number of zebras in a population each year, and notices an increase in the zebra population. Which describes the biologist’s actions?
observation
500
Which of these can be found in both gymnosperms and angiosperms?
vascular tissue and seeds
500
The lava released by a volcanic eruption separates two populations of a species of monkey. What does this represent?
geographical isolation
500
A farmer has applied a pesticide to control a pest population that is affecting her crops. The pest population has reacted as shown below.
Which best describes the process that the pest population has experienced due to this environmental change?
natural selection