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Test your basic knowledge |
PCAT Biology Ecology
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Subjects
:
pcat
,
biology
Instructions:
Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Animals that consume primary consumers (carnivores)
Tropical Rain Forest Biome
Secondary Consumers
Epiphytes
Omnivores
2. Distinct community in a geographic region
Pelagic Zone
Biome
Climax Community
Ecological Succession
3. Cannot synthesize their ow food and must depend upon autotrophs or others in the ecosystem to obtain their food
Hemeothermic (Warm Blooded)
Epiphytes
Heterotrophs
Nitrogen cycle 1
4. Plants growing on other plants - trees grow closely together; sunlight hardly reaches the forest floor
Epiphytes
Predator-Prey relationship
Intraspecific Interactions
Nitrogen Cycle 4
5. Any group of similar organisms that are capable of reproducing
Conditions for stability in an Ecosystem
Species
Secondary Consumers
Competition Same Niche 3
6. Elemental nitrogen is chemically inert and cannot be used by most organisms. Lightning and nitrogen-fixing bacteria in the roots of legumes change the nitrogen into the usable - soluble nitrates
Hypotonic
Carbon Cycle 3
Other Cycles
Nitrogen cycle 1
7. Adaptations for maintaining their internal osmolarity and conserving water
Omnivores
Taiga Animals
Osmoregulation
Sere
8. Determines the nature of plant and animal life in the soil
Substratum (soil/rock)
Nitrified
Biotic Community
Intraspecific Interactions
9. Every energy transfer involves a loss of energy and each level of the food chain uses some of the energy it obtains from the food for its own metabolism and loses some additional energy in the form of heat
Abiotic (Physical) Environment
Second Law of Thermodynamics
Omnivores
Competition Same Niche 3
10. Region typical of the open seas and can be divided into photic and aphotic zones
Lithosphere
Nitrogen Cycle 3
Osmoregulation
Pelagic Zone
11. Must be maintained at an optimal level -organisms have adaptations necessary for protection against extremes
Mutualims
Physical Environment-Temperature
Organism
Aphotic Zone animals
12. The orderly process by which one biotic community replaces or succeeds another until a climax community is established
Successive Communities
Desert Plants
Ecological Succession
Pioneer Organism
13. Contains plankton - passively drifting masses of microscopic photosynthetic and heterotrophic organisms - and nekton - and algae
Photic Zone animals
Nitrogen
Physical Environment-Temperature
Population
14. Autotrophic green plants and chemosynthetic bacteria that use the energy of the sun and simple raw materials to manufacture carbohydrates - proteins - and lipids
Aphotic Zone
Producers
Nitrogen Cycle 3
Carbon Cycle 3
15. Oceans connect to form one continuous body of water - which controls the earth's temperature by absorbing solar heat
Poikilothermic (Cold Blooded)
Physical Environment-Sunlight
Substratum (soil/rock)
Marine Biomes
16. Made into nitrites by chemosynthetic bacteria and then to usable nitrates by nitrifying bacteria
Nitrified
Biosphere
Desert animals
Sere
17. Nekton and benthos - scavengers - and predators (fiercely competitive)
Aphotic Zone animals
Cohesive Force
Taiga Animals
Temperate Coniferous Plants
18. Nutrients - water - and sunlight limitations aid in maintaining populations at relatively constant levels
Environmental Factors
Second Law of Thermodynamics
Ecological Succession
Aphotic Zone
19. Two fates await the ammonia (NH3). some are nitrified or dentrified
Herbivores
Tropical Rain Forest Plants
Tertiary Consumers
Nitrogen Cycle 5
20. Evolve toward a balance in which the predator is a regulatory influence on th prey but not a threat to its survival
Predator-Prey relationship
Nekton
Population
Other Cycles
21. The oceans
Hydrosphere
Second Law of Thermodynamics
Population
Food Chain
22. Only animal life and other heterotrophic life exists
Poikilothermic (Cold Blooded)
Aphotic Zone
Coimax Vegetatioin
Nature of Biomes
23. The nitrogen locked up in the wastes and dead tissues is released by the action of the bacteria of decay - which convert the proteins into ammonia
Taiga Animals
Primary Consumers
Competition Same Niche 2
Nitrogen Cycle 4
24. Live together in an intimate - often permanent association - which may or may not be beneficial to both participants
Second Law of Thermodynamics
Symbionts
Autotrophs
Pelagic Zone
25. Recycle water - oxygen - and phosphorus
Other Cycles
Freshwater Biomes
Biotic Community
Competition Same Niche 2
26. Ammonia (NH3) is broken down to release free nitrogen - which returns to the beginning of the denitrifying
Abiotic (Physical) Environment
Food Pyramids
Carbon Cycle 1
Dentrified
27. Affect the type of vegetation that can be supported
Substratum-Minerals
Intertidal Zone
Pyramid of Mass
Substratum-texture
28. Composed of populations that are able to exist under the new conditions
Substratum-Humus
Successive Communities
Photic Zone
Tropical Rain Forest Biome
29. One or both organisms can't survive without the other
Coimax Vegetatioin
Obligatory
Carnivores
Niche
30. Community in an ecological succession is identified by a dominant species
Temperate Deciduous Forest Animals
Sere
Niche
Climate and weather
31. Determine by the amount of decaying plant and animal life in the soil
Substratum-Humus
Taiga Plants
Deep-sea Organisms
Ecosystem
32. Animals eat the plants and synthesize specific animal proteins form the plant proteins. both plants and animals give off wastes and eventually die
Nitrogen Cycle 3
Deep-sea Organisms
Species
Cohesive Force
33. Include saprophytic organisms and organisms of decay
Nitrogen Cycle 4
Decomposer
Temperate Coniferous Plants
Producers
34. Animals that consume dead animals
Substratum (soil/rock)
Physical Environment- Water
Scavengers
Environmental Factors
35. In the ocean - the top layer thorugh which light can penetrate - is where all aquatic photosynthetic activity takes place
Nature of Biomes
Poikilothermic (Cold Blooded)
Photic Zone
Second Law of Thermodynamics
36. Animals that feed on secondary consumer
Carnivores
Tertiary Consumers
Biotic Environment
Benthos
37. Lichens and moss
Tundra Plants
Temperate Coniferous Plants
Parasitism
Secondary Consumers
38. Regiong beneatht he photic zone that receives no light
Primary Consumers
Aphotic Zone
Carbon Cycle 2
Autotrophs
39. Animals that consume green plants (herbivores)
Deep-sea Organisms
Aphotic Zone
Primary Consumers
Carnivores
40. Frozen area with no vegetation and terrestrial animals -animals that do inhabit polar regions generally live near the polar oceans
Competition
Polar Region
Biome
Tertiary Consumers
41. Have cold winters - warm summers - and moderate rainfall -found in the Northeast and Central-Eastern United States and Central Europe
Substratum-Minerals
Marine Biomes
Grassland Biome
Temperate Deciduous Forest Biome
42. Links between oceans and land
Temperate Coniferous Forest Biome
Marshes
Desert Biome
Nitrogen
43. Live in burrows had few birds and mammals are found except those which have developed adaptations for maintaining constant body temperatures
Population
Climate and weather
Aphotic Zone
Desert animals
44. Freshwater Biomes vs. Saltwater 1: Freshwater is _______________ which results in the passage of water into the cell. Freshwater organisms have homeostatic mechanisms to maintain water balance by the regular removal of the excess water. these include
Hypotonic
Pyramid of Mass
Physical Environment-Temperature
Intertidal Zone
45. Because organisms at the upper levels of the food chain derive their food energy from organisms at lower levels - and because energy is lost from one level to the next - each level can support a successively smaller biomass
Pyramid of Mass
Conditions for stability in an Ecosystem
Nitrogen Cycle 2
Tundra Biome
46. Two species may rapidly evolve in divergent directions under the strong selection pressure resulting from intense competition. thus - the two species would rapidly evolve greater differences in their niches
Intraspecific Interactions
Food Web
Competition Same Niche 3
Nitrified
47. Body temperature is very close to that of their surroundings -as temperature rises - these organisms become more active
Competition Same Niche
Poikilothermic (Cold Blooded)
Intraspecific Interactions
Photic zone
48. Encompasses all that is external to the organism and is necessary for its existence
Aphotic Zone
Nitrogen Cycle 2
Environment
Biosphere
49. Group of organisms of the same species living together in a given location
Population
Carbon Cycle 3
Pioneer Organism
Intertidal Zone Population
50. Region exposed to low tides that undergoes variations in temperature and periods of dryness
Thundra Animals
Scavengers
Desert animals
Intertidal Zone
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