REVIEWER

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AGRICULTURE AND FISHERY ARTS
LET REVIEWER UNIVERSITY
1. What is the 10% rule?
a. 90% of energy is LOST as you move up the food chain
b. 10% of energy is LOST as you move up the food chain
c. 90% of energy is GAINED as you move up the food chain
d. All of the above
2. A certain biome receives less than 10 centimeters of rainfall each year. Plants in this
biome may have long taproots that reach water deep underground or may have shallow
root systems that catch rainwater as soon as it hits the ground. Which biome most likely
contains plants with these adaptations?
a. Deciduous Forest
b. Rain Forest
c. Desert
d. Wetland
3. How does length of time, a high influencing factor in population density, relate to a
species ability to survive in a high population area?
a. Animals can become more equipped to handle environmental changes the longer they stay
in an area
b. Invasive species can out-compete other species when their normal predators are
absent
c. Animals which can feed off very little organisms are not sensitive to changes in their
environment.
d. This was a hard question.
4. Which is an example of a biotic factor in an ocean?
a. Cow
b. Starfish
c. Waves
d. Sand
5. Which question would best help a student classify an organism as a decomposer?
a. Does it feed on plants?
b. Does it use sunlight to make its own food?
c. Does it break down dead material?
d. Does it have parts that attract pollinators?
6. All ecosystems combined is called __________.
a. Biosphere
b. Community
c. Habitat
d. Population
7. The ecological niches of three bird species are shown in the diagram. What is the
advantage of each bird species having a different niche?
a. As more birds feed higher in the tree, available energy increases.

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b. More abiotic resources are available for each bird.
c. Predators are less likely to feed on birds in a variety of locations.
d. There is less competition for food.
8. Consists of all the biotic and abiotic factors of the environment _________.
a. Population
b. Community
c. Ecosystem
d. Habitat
9. Some elements in a coniferous forest include snow, trees, deer, and birds. Which is an
abiotic element in this biome?
a. Snow
b. Trees
c. Deer
d. Birds
10. In addition to rain, which other factor most helps plants grow all year in a tropical rain
forest?
a. Low Humidity
b. Warm Temperatures
c. Cloudy Summers
d. Windy Conditions
11. An organism's _________ is defined as the environment in which it lives.
a. Habitat
b. Niche
c. Social structure
d. Ecosystem
12. A food web of the Antarctic is shown. Which statement best describes the flow of energy
in this food web?
a. The Adélie penguin provides energy for the humpback whale.
b. Phytoplankton are the base of energy for this food web.
c. The crabeater seal receives energy from the leopard seal.
d. Squid receive energy from multiple organisms in this food web.
13. A tick and a dog have this type of relationship.
a. Mutualism
b. Commensalism
c. Neutralism
d. Parasitism
14. Which set of abiotic factors is typical in rain forest biomes?
a. Warm temperatures and large amounts of precipitation
b. Hot temperatures and very little precipitation
c. Cool temperatures and low amounts of precipitation
d. Extremely cold temperatures and freezing precipitation

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15. Red-billed oxpeckers are birds that feed on parasites found on an impala. The impala
gets rid of parasites and the red-billed oxpeckers get a yummy dinner. This is an example
of __________.
a. Commensalism
b. Mutualism
c. Neutralism
d. Competition
16. When an environment has reached it carrying capacity for a certain population, which of
the following statements is correct?
a. Growth and immigration rate are equal to death and emigration rate.
b. Growth and immigration rate are greater than death and emigration rate
c. Growth and immigration rate are less than death and emigration rate.
d. Growth rate is exponential.
17. The Arctic tundra provides a habitat for caribou and arctic hare. Which best describes the
climate in which these animals live?
a. Cold and humid
b. Warm and dry
c. Cold and dry
d. Warm and humid
18. How does the predator-prey relationship affect a population?
a. The predators and prey are in competition with each other.
b. Usually either the predator or the prey will become extinct.
c. The predator species usually has exponential growth.
d. The relationship controls the population size of both species
19. A coniferous forest biome has long, cold, snowy winters. It contains pine and spruce
trees, elk, moose, and gray wolves. Which factor is an abiotic element in this biome?
a. Moose
b. Spruce Trees
c. Snow
d. Gray Wolves
20. Which of the following is considered a limiting factor in a population of organisms?
a. Reproductive replacement
b. Life spans of the members
c. Fluctuations in atmospheric temperature
d. Availability of food
21. Which organisms are most important for adding nutrients to the soil?
a. Consumers
b. Scavengers
c. Producers
d. Decomposers
22. What do you call the population size represented by the dashed – line?
a. Carrying Capacity
b. Limiting Factor
c. Ecosystem

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d. Death Rate
23. The lion is the natural predator of the zebra. If the zebra population drops, the lion
population will most likely __________.
a. Drop
b. Thrive
c. Be unaffected
d. Decrease, then increase exponentially
24. Cattle egrets forage (feed) in fields among cattle. The egret gets easy access to flying
insects stirred up by the cattle, and the cattle don't care if they are there or not.
a. Mutualism
b. Commensalism
c. Competition
d. Parasitism
25. The term for the role an organism has in the community is termed as __________.
a. Niche
b. Habitat
c. Tolerances
d. Competition
26. What is the major difference between a community and an ecosystem?
a. A community involves only the biotic, not the abiotic
b. An ecosystem only includes herbivores and carnivores-- no decomposers
c. An ecosystem involves only the biotic, and the abiotic
d. An ecosystem is just a larger community
27. When a mosquito bites you, you are the __________ and the mosquito is the __________.
a. host, hostess
b. parasite, host
c. host, parasite
d. prey, predator
28. This occurs when niches overlap between species and they have to compete for
resources.
a. Competition
b. Interspecific
c. Parasite
d. Intraspecies
29. Which are the primary elements involved in the water cycle?
a. Oxygen and hydrogen
b. Oxygen, hydrogen, and carbon
c. Oxygen, hydrogen, and nitrogen
d. Oxygen, hydrogen, carbon, and nitrogen
30. How do adaptations help animals?
a. To hide from predators
b. To hunt for food
c. To survive in their habitats
d. All of the above
31. Naked mole rats use __________ communication to distinguish colonies.
a. Auditory
b. Olfactory
c. Tactile
d. Visual
32. Which example describes a learned behavior in a dog?
a. Smelling the air for odors
b. Barking when disturbed
c. Sitting on command
d. Digging in soil
33. The amount of energy that usually transfers from one trophic level to the next is
__________.
a. 10%
b. 20%
c. 80%
d. 50%

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34. What is the main reason for concern about the destruction of coral reefs related to global
warming?
a. The most colorful fish live in coral reefs.
b. Coral reefs are ideal locations for studying marine life.
c. Hundreds of thousands of species depend on coral reefs.
d. Coral reefs can reduce shoreline damage from tsunamis.
35. Male peacocks have large brightly colored tail feathers. What is the most likely reason for
this?
a. To attract potential mates
b. To distract potential predators
c. To help catch food
d. To preserve warmth
36. Some animals have bright colors to warn other animals to stay away (because of toxins
or harmful effects). This is called __________.
a. Camouflage
b. Instinct
c. Mimicry
d. Warning Coloration
37. What is the most likely effect of a drought on a population of frogs that live in a shallow
swamp?
a. Only younger frogs will survive
b. The number of predators will increase
c. Decrease in frog population as water evaporates
d. Increase in frog population as more land is exposed
38. A mouse squeaking to warn others of predators is __________.
a. Auditory
b. Visual
c. Olfactory
d. Tactile
39. Edith’s checkerspot butterfly is a non-migratory species found in distinct populations
from Canada to Mexico. Today, populations in southern regions are declining while new
populations push the northern limit further north. This range shift provides evidence for
the theory of __________.
a. Global Demand
b. Bioaccumulation
c. Global Warming
d. Natural Selection
40. What will most likely result after the introduction of a non-native species to an
ecosystem?
a. Increased acid rain
b. Disruption in the food web
c. Increased habitat destruction
d. Disruption of weather patterns
41. An animal's color or pattern that helps it blend into its surroundings __________.
a. Environment
b. Mimicry
c. Camouflage
d. Instinct
42. Why is it important that the harvesting of trees is regulated?
a. To limit tree populations
b. To limit accidents of loggers
c. To ensure that a sustainable number of trees are preserved
d. To ensure that a high standard of wood quality is maintained
43. A living or once-living organisms in an ecosystem is a __________.
a. Population
b. Biotic Factor
c. Abiotic Factor
d. Community
44. How does the energy in each trophic level of an energy pyramid compare to the energy in
the preceding level?

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a. It has about 5% of the energy from the level below it.
b. It has about 10% of the energy from the level below it.
c. It has about 15% of the energy from the level below it.
d. It has about 20% of the energy from the level below it.
45. If you have unlimited resources, what would you expect to happen to population size?
a. Go up
b. Go down
c. Stay the same
d. Either A or B
46. In which process is nitrogen from the air put into a form that plants can use?
a. Nitrification
b. Denitrification
c. Nitrogen Saturation
d. Nitrogen Fixation
47. A wasp beetle has the same body markings as a wasp. this helps the wasp beetle
because predators think it's a wasp. This adaptation is called __________.
a. Behavior
b. Countershading
c. Camouflage
d. Mimicry
48. Which has the greatest impact on the rate of photosynthesis?
a. The amount of oxygen present
b. The rate of aerobic respiration
c. The rate of anaerobic respiration
d. The amount of carbon dioxide present
49. Hummingbirds feed on nectar from flowers. The flowers are pollinated by hummingbirds
as they move from flower to flower. What type of symbiosis?
a. Commensalism
b. Mutualism
c. Parasitism
d. Predation
50. Which statement correctly describes part of the carbon cycle?
a. The amount of carbon in the soil increases when plants decay
b. The amount of carbon in the ocean decreases when fossil fuels are burned.
c. The amount of carbon in the atmosphere decreases when igneous rocks form.
d. The amount of carbon in the atmosphere increases when photosynthesis occurs