4The Green Questions are test-like questions and Gold Questions are the most missed test-like questions.
51. 6B The diagram below represents a tree containing three different species of warbler. A,B and C. Each species occupies a different niche. A fourth species,D, which has the same environmental requirements as species B, enters the tree at point X. Members of species B will most likelyAXDBC
62. 6B A food web is shown in the diagram below. HawkFrogRabbitField MouseCricketGrassWhich statement best describes a direct result of a decrease in the rabbit population due to disease?A. The hawk population will increase.B. The grass population will increase.C. The cricket population will decrease.D. The frog population will be eliminated.
7B.The number of secondary consumers. 3. 6B Which factor most determines the type of plants that grow in an area?A. Climate of the area.B.The number of secondary consumers.C. Depth of the pond in the area.D. Percentage of nitrogen in the air.
84. 6B Climate is a global factor that produces A. Earth’s unique ocean and atmosphere.B. The shape and elevation of landmasses.C. A wide range of environmental conditions that shape communities.D. Solar energy within the atmosphere.
95. 6B Which type of biome occupies the largest area of Earth? A.Temperate Decidous ForestB.Tropical Rain ForestC. GrasslandsD. Marine
106. 6B Some scientist think that global warming is A. a natural variation in climate.B. a result of human activities.C. melting the polar ice caps.D. all of the above
117. 6A When scientists measure the biodiversity of a habitat, they consider- A. The diversity in plants.B. The kind of producers & consumers.C. The variation in animals.D. All of the organisms.
128. 6B An increase in the Earth’s average temperature from the build up of carbon dioxide and other gases in the atmosphere is called?A. the greenhouse effectB. ozone depletionC. global warmingD. particulate dispersion.
139. 6B Biomes A. C B. B C. D D. E A. Tropical Rain Forest B. Temperate Deciduous ForestC. Taiga D. TundraE. Grassland F. DesertWhich biome is characterized by moderate rainfall, cold winters, and the presence of foxes and deer?A. C B. BC. D D. E
1410. ContinuedA. Live in harmony with species DB. Move to a different level with species A or species C.C. Stay at that level but change their diet.D. Compete with species D.
1511. 6B The sum total of the genetically-based variety of living organisms in a biosphere is called----?A. species diversityB. biodiversityC. sustainable useD. conservation biology
1612. 6B All of the following are threats to biodiversity EXCEPT for A. Species preservationB. Invasive speciesC. Habitat FragmentationD. Biological magnification of toxic compounds.
1713. 6B An endangered species is A. A diseased animalB. A dangered predatorC. A group of organisms near extinction.D. All organisms at the top of the food chain.
1814. 6B Which phrase best describes an ecosystem? A. All the organisms in a specific location.B. All the nonliving materials in a specific location.C. Some non-living materials and living organism in a specific location.
1915. 6B Biodiversity is valuable in the biosphere because it A. is the biological life-support system of our planet.B. gives us interesting things to look at.C. tells us about many other species.
2116. 6F Organisms in each trophic level of a food chain pass on- A. Less energy than they receivedB. More energy than they receivedC. The same amount of energy as they receivedD. No energy
22Energy lost due to movement waste that is released 17. 6F Each level of the pyramid is smaller than the level below it because some of the matter is converted into.Energy lost due to movementwaste that is releasedenergy lost due to heatall of the above.5Question on amounts of energy transferred in pyramid.550500
23A. hydrolysis B. cyclosis C. condensation D. transpiration 18. 6D As water cycles through an ecosystem, which process returns it to the atmosphere?A. hydrolysisB. cyclosisC. condensationD. transpiration
24A. Hererotroph B. Consumer C. Detrivore D. Autotroph 19. An organism that uses energy to produce its own food supply from inorganic compounds is called a(an)A. HererotrophB. ConsumerC. DetrivoreD. Autotroph
2520. A decrease in which group would create instability in an ecosystem first? A. ProducerB. Primary ConsumerC. Secondary ConsumerD. Decomposer
26A.The weight & number of fish 21. A student measured some abiotic factors present in an aquarium in a biology lab. Which data did the student most likely record?A.The weight & number of fishB. The number of snails & plantsC. The size & number of fishD. The temp and O2 levels
27B. Mice C. Plants D. None of the above A. Snakes 22. 6f The diagram below shows a food pyramid, Which level of the food pyramid contains consumers with the least biomass?A. SnakesB. MiceC. PlantsD. None of the aboveQuestion on amounts of energy transferred in pyramid.
2823. The action of a decomposer in the nitrogen cycle most directly aids in the A. Synthesis of proteins from nitratesB. Removal of nitrogen compounds from the atmosphereC. Restoration of nitrogen compounds to the soilD. Fixation of the atmospheric nitrogen
2924. The maintenance of a self-sustaining ecosystem requires a A. Soil that is acidicB. Contant temperatureC. Cycling of materials between organisms and their environmentD. Greater number of herbivores than producers
3025. The diagram below shows an example of interdependence among land organisms. During the day, plants mostly give off substance A , as shown by the arrows.What are the substances represented by A and B?ABA. A-O2 & B-CO2B. A-O2 & B-SugarsC. A-N & B-CO2D. A-CO2 & B-O2
3126. 6E An organism that cannot make its own food is called a (an) A. heterotrophB. chemotrophC. autotrophD. consumerE. both A & D
3227. 6f Only 10 percent of the energy stored in an organism can be passed on to the next trophic level. Of the remaining energy, some is used for the organism’s life processes, and the rest is…A. used in reproductionB. stored as body tissue.C. stored as fat.D. eliminated as heatQuestion on where much of the energy goes in a food web or food chain.
33A. Ecological succession B. A food chain C. Natural selection 28. 6F Energy stored in organic molecules is passed from producers to consumers. This statement best describes an event inA. Ecological successionB. A food chainC. Natural selectionD. photosynthesis
34A. Burning of trees and forest. B. Burning of fossil fuels. 29. 6B Carbon dioxide is released into the atmosphere by all of the following EXCEPT for theA. Burning of trees and forest.B. Burning of fossil fuels.C. Depletion of the ozone layer.D. Cellular Respiration
3530. 6f What is the original source of almost all energy in most ecosystems? A. CarbohydratesB. SunlightC. WaterD. CarbonQuestion on original source of energy.
37C. Geographic distribution D. Population density 31. 6C There are 150 saguaro cacti plants per square kilometer in a certain area of Arizona desert. To which population characteristics does this information refer?A. Growth rateB. Age structureC. Geographic distributionD. Population density
3832. 6C When organisms move into a given area from another area, what is taking place? A. immigrationB. emigrationC. Population shiftD. Carrying capacity
3933. 6C When organisms move out of the population they were born in, it is known as A. emigrationB. abandonmentC. immigrationD. succession
4034. 6C Which are two ways a population can decrease in size? A. Immigration and emigrationB. Increase death rate & immigrationC. Decreased birthrate and emigrationD. Emigration & increased birthrate
4135.6C Biotic or abiotic resources in the environment that limits the size of a population is a A. Carrying Capacity.B. Limiting Nutrient.C. Limiting FactorD. Growth factor
42A. Carrying Capacity. B. Logistic growth C. Limiting Factor 36.6C The number of organisms that an environment can support over a relatively long period of time is calledA. Carrying Capacity.B. Logistic growthC. Limiting FactorD. Exponential growth
4337.6C If a population grows larger than the carrying capacity of the environment, the A. Death rate may rise.B. Birthrate may rise.C. Death rate must fallD. Birthrate must fall
4438.6C Demography is the scientific study of A. Democratic societiesB. Modernized countriesC. Human populationsD. Economic transitions
4539.6C One of the main characteristics of a population is its A. Change over timeB. Geographic distributionC. DynamicsD. Habitat
4640.6C Demographic transition begins with changes in society that A. Lower the birthrate.B. Modernize the country.C. Lower the death rate.D. Explain why populations change.