Answer these 200+ Ecology MCQs and see how sharp is your knowledge of Ecology. Scroll down and let's start!
A. Water evaporating from a lake
B. Water moving into creeks and streams following a rainstorm
C. Calcium carbonate dissolving in soil water and groundwater
D. Water infiltrating into the soil and bedrock
A. The carrying capacity of its environment
B. Lower the survival rates of the parents
C. Grows fastest at an intermediate population density
D. By a logistic equation
A. Large and close to a mainland
B. Ecosystem engineers
C. Ecological niche
D. Communities are constantly changing after being influenced by disturbances
E. Trophic structure
A. Is a regional grouping of plants, animals, and other biotic factors
B. Is the total population of a specific kind of plant, animal, or microbe and all members of which do or potentially can interbreed and produce young
C. Encompasses all the organisms and the physical and chemical environment within an area
D. Is a grouping of plants and animals that interacts with one another in a way that causes the grouping to die
E. Is a collection of interacting species living in a specific area
A. Overharvesting
B. Habitat loss
C. Exotic species
D. Climate change
A. Aposematic coloration
B. Müllerian mimicry
C. Mechanical defense
D. Batesian mimicry
E. Predation
A. Interspecific competition
B. High-energy carbohydrates
C. Intraspecific competition
D. Lynx and snowshoe hares
A. Mutualisms between mammals are rare, more so when a primate isn't involved.
B. Herbivorous organisms are near the bottom of the food chain.
C. The part of the habitat's resources that a species uses
D. Food chains are often complex and intertwined.
E. Which organisms are producers and which are consumers
A. Plants synthesize their own organic molecules.
B. It obtains nitrogen from their bodies that it cannot get from the soil
C. It must be required in relatively large amounts
D. Most serve mainly as cofactors of enzymes
A. Primary consumers
B. Secondary consumers
C. Producers
D. Decomposers
E. Detritivores
A. Coevolution
B. Mutualism
C. Symbiosis
D. Competition
E. Parasitism
A. Cellular respiration only ... Disturbance is inevitable
B. Energy used by primary consumers ... energy used by secondary consumers
C. Disturbance is inevitable ... all return carbon dioxide to the atmosphere during cellular respiration.
D. Grows fastest at an intermediate population density ... Disturbance is inevitable
A. Habitat loss
B. Population fragmentation
C. Reproductive reate
D. Population size
E. All of these
A. Biocontrol measures, crop rotation, and habitat diversification
B. Effectively cleared non-native prickly pear cactus from rangeland
C. Decreased organic soil losses while giving yields comparable to conventional farming
D. Essential pollinators and predators
A. Adds nutrients to soil naturally
B. Is a common agricultural practice to improve soil
C. Can help plant growth only if done properly
D. Is caused by movement of water upward through soil from the water table
E. Removes water-soluble nutrients from topsoil
A. Enter plants via the stomata
B. Include sugars
C. Are organic nutrients
D. Are not essential to plant growth
E. Contribute little to a plant's overall mass
A. The U.S.; Europe
B. Canada ; the U.S.
C. South America ; South Africa
D. South Africa ; Congo
E. Congo ; developed nations in North America and Europe
A. Predator
B. Weaken
C. Exotic
D. Climatic Events
A. Biocontrol measures, crop rotation, and habitat diversification
B. Erosion, over-irrigation, and overgrazing
C. Affected by rainfall, freezing and thawing
D. Are techniques for conserving soil resources and fertility
A. Sympatric populations of a predator and its prey.
B. Sympatric populations of species with similar ecological niches.
C. Sympatric populations of a flowering plant and its specialized insect pollinator
D. Allopatric populations of the same animal species.
E. Allopatric populations of species with similar ecological niches
A. Master rules of syntax
B. Learn sign language
C. Create simple sentences
D. Comprehend spoken words
A. Occurs when a species dies out
B. Is caused by reduced gene flow
C. Happens when parasites evolve
D. Is slowed by geographic isolation
A. Genetic isolation
B. Geographic isolation
C. Periods of rapid evolutionary change
D. Long periods of time
A. Resources in an area are limited
B. Most populations have a limited life span and die, making room for others
C. Climatic changes lead to reduced water availability
D. Each existing community changes the environment
A. Atmospheric
B. Organic
C. Mineral
D. Aquatic
E. Organic and gaseous
A. Will probably continue because the environmental impacts of dams are reviewed periodically
B. Will probably increase rapidly as we move to a more fossil-fuel-dependent society
C. Is controversial because dams provide such good habitats for native species
D. Provides many new jobs and opportunities and so is economically beneficial
E. Will assist with our transition to more natural forms of renewable energy
A. Cities and states are setting their own programs for reducing greenhouse gas emissions
B. Is less than any of the anthropogenic factors affecting climate change
C. Is an international panel that reports on how climate change influences biomes and economies
D. Molecules in the atmosphere are warmed by radiation from Earth and retain that heat
A. Harmful to ecosystems
B. A natural recovery process
C. Unnecessary for ecosystem recovery
D. A one-time event
A. Group of individuals of the same age
B. High initial death rates but later high survivorship (e.g., plants)
C. Both of these
D. None of these
A. Ecological disturbance is minimized
B. Extinction will cease
C. The rate of species immigration will equal the rate of species extinction
D. The food web will be highly stable
A. Energy used by primary consumers … energy used by secondary consumers
B. Biomass of producers … biomass of primary consumers
C. Number of producers … number of primary consumers
D. Biomass of secondary consumers … biomass of producers
A. Chimpanzees are basically juvenile humans that have gained the ability to reproduce
B. Relatively small genetic changes can have a major impact on phenotype
C. Differences in the fetal skulls of chimpanzees and humans lead to very similar adult skulls
D. Relatively large genetic changes can have a minor impact on phenotype
A. Egg
B. Milk
C. Chicken
D. Beef
A. Increase
B. Decrease
C. Stay the same
D. Change, but the direction cannot be predicted
A. Amniotic egg
B. Amniotic fluid
C. Leathery
A. Reproduction
B. Natural selection
C. Competition
D. Predation
A. Herbivores
B. Plants
C. Cows
D. Carnivores
A. Habitat
B. Population
C. Community
D. Climate
A. Herbivory
B. Predation
C. Habitat destruction
D. A keystone species
A. More likely to go extinct than a niche
B. More likely to go extinct than a niche generalist
C. More likely to go extinct than a specialist
A. Cessation of mining or farming or causes of erosion
B. Restricting livestock from riparian areas
C. Removing toxic materials from soil or sediments
D. All
A. Protist.
B. Plant.
C. Fungal
A. Increased fossil fuel usage
B. Industrial pollution of landfills
C. Interruption of natural biome processes
D. Sewage contamination of groundwater
A. Release them to non-native ecosystems
B. Clone them
C. Keep them in zoos
D. Release them to the wild
A. Convert atmospheric nitrogen to ammonia
B. Plants synthesize their own organic molecules.
C. Most serve mainly as cofactors of enzymes.
D. Contribute little to a plant's overall mass
A. Beef
B. Eggs
C. Chicken
D. Milk
E. Pork
A. Species richness
B. Predation
C. Endemic
D. Both an herbivore and a primary consumer
A. Are generalist organisms
B. Cause disease
C. Are invasive species that cause extinction
D. Have high rates of mutations that lead to large numbers of offspring species
E. Are found only in one place on the planet
A. Warm climates.
B. Water logged soil.
C. Soil containing good oxygen levels.
D. Nutrient rich soil
A. It must be required in relatively large amounts is a mixture of rock fragments, living organisms, and humus
B. [ Topsoil is produced by the erosion of rock by living organisms and is rich in decomposing organic matter (humus).]
C. It obtains nitrogen from their bodies that it cannot get from the soil( The sundew lives in nitrogen-poor soil and obtains its nitrogen from the digestion of insects.)
D. None of these