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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. Only animal life and other heterotrophic life exists
Other Cycles
Dentrified
Tertiary Consumers
Aphotic Zone
2. One species may be competitively superior to the other and drive the second to extinction
Competition Same Niche
Scavengers
Predator-Prey relationship
Competition
3. Composed of populations that are able to exist under the new conditions
Communities
Species
Successive Communities
Carbon Cycle 3
4. Each member of a food chain uses some of the energy it obtains from its food for its own metabolism and loses some additional energy in the form of heat
Environmental Factors
Pyramid of Energy
Pioneer Organism
Physical Environment- Water
5. Frozen area with no vegetation and terrestrial animals -animals that do inhabit polar regions generally live near the polar oceans
Polar Region
Tertiary Consumers
Poikilothermic (Cold Blooded)
Pyramid of Numbers
6. Have cold winters - warm summers - and moderate rainfall -found in the Northeast and Central-Eastern United States and Central Europe
Tropical Rain Forest Animals
Temperate Deciduous Forest Biome
Nature of Biomes
Aphotic Zone
7. Affect the type of vegetation that can be supported
Competition
Substratum-Minerals
Coimax Vegetatioin
Pyramid of Numbers
8. Distinct community in a geographic region
Nitrogen
Commensalism
Biome
Biotic Environment
9. Body temperature is very close to that of their surroundings -as temperature rises - these organisms become more active
Poikilothermic (Cold Blooded)
Carbon Cycle 2
Thundra Animals
Secondary Consumers
10. Community in an ecological succession is identified by a dominant species
Food Web
Primary Consumers
Desert Plants
Sere
11. Encompasses all that is external to the organism and is necessary for its existence
Deep-sea Organisms
Environment
Taiga Plants
Heterotrophs
12. Freshwater Biomes vs. Saltwater 2: In rivers and streams - strong swift currents exist - and thus fish that have developed strong muscles and plants with _____________ have survived
Rootlike holdfasts
Pyramid of Mass
Aquatic Biomes
Communities
13. When one organism is benefited by the association and the other is not affected
Heterotrophs
Ecology
Commensalism
Species
14. In the ocean - the top layer thorugh which light can penetrate - is where all aquatic photosynthetic activity takes place
Photic Zone
Physical Environment-Temperature
Biotic Community
Nitrogen Cycle 5
15. Regiong beneatht he photic zone that receives no light
Sere
Aphotic Zone
Temperate Coniferous Plants
Competition Same Niche 3
16. One species may be competitively superior in some regions - and the other may be superior in other regions under different environmental conditions. this would result in the elimination of one species in some places and the other in other places
Temperate Coniferous Plants
Competition Same Niche 2
Intraspecific Interactions
Desert animals
17. Vegetation has evolved adaptations for water conservation such as needle shaped leaves
Conditions for stability in an Ecosystem
Scavengers
Temperate Coniferous Plants
Tertiary Consumers
18. Region on the continental shelf that contains ocean area with depths up to 600 feet and extends several hundred miles from the shores
Tertiary Consumers
Abiotic (Physical) Environment
Intertidal Zone Population
Littoral Zone
19. Any group of similar organisms that are capable of reproducing
Species
Ecology
Conditions for stability in an Ecosystem
Aphotic Zone animals
20. The ultimate source of energy for all organisms
Nitrified
Physical Environment-Sunlight
Benthos
Environmental Factors
21. Rock and soil surface
Communities
Pioneer Organism
Temperate Deciduous Forest Plants
Lithosphere
22. 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
Grassland Animals
Desert Plants
Pyramid of Mass
Grassland Biome
23. The oceans
Heterotrophs
Nitrogen Cycle 2
Hydrosphere
Organism
24. First to resettle a virgin area
Pioneer Organism
Population
Environmental Factors
Climate and weather
25. Links between oceans and land
Marshes
Substratum-Minerals
Nitrogen
Taiga Animals
26. Includes all portions of the planet that support life -the atmosphere - the lithosphere - and the hydrosphere
Biosphere
Obligatory
Tundra Plants
Grassland Biome
27. Material is cycled and recycled betweenn organisms and their environments - passing from inorganic forms to organic forms and then back to the inorganic forms
Material Cycles
Biotic Environment
Pioneer Organism
Decomposer
28. Gaseous CO2 enters the living world when plants use it to produce glucose via photosynthesis. The carbon atoms in CO2 are bonded to hydrogen and other carbon atoms. the plant uses the glucose to make starch - proteins - and fat
Carbon Cycle 1
Physical Environment- Water
Conditions for stability in an Ecosystem
Pyramid of Mass
29. The chief disruptive force
Competition
Substratum-pH
Organism
Obligatory
30. Animals that consume primary consumers (carnivores)
Predator-Prey relationship
Secondary Consumers
Organism
Temperate Deciduous Forest Plants
31. Defines the functional role of an organism in its ecosystem -described what the organism eats - where and how it obtains its food - what climatic factors it can tolerate and which are optimal - the nature of its parasites and predators - where and ho
Niche
Grassland Animals
Community
Desert Biome
32. Ammonia (NH3) is broken down to release free nitrogen - which returns to the beginning of the denitrifying
Marine Biomes
Producers
Successive Communities
Dentrified
33. Cannot synthesize their ow food and must depend upon autotrophs or others in the ecosystem to obtain their food
Nitrogen Cycle 2
Heterotrophs
Epiphytes
Herbivores
34. Autotrophic green plants and chemosynthetic bacteria that use the energy of the sun and simple raw materials to manufacture carbohydrates - proteins - and lipids
Taiga Plants
Competition
Producers
Nitrified
35. Oceans connect to form one continuous body of water - which controls the earth's temperature by absorbing solar heat
Marine Biomes
Other Cycles
Intraspecific Interactions
Tropical Rain Forest Animals
36. Nekton and benthos - scavengers - and predators (fiercely competitive)
Carbon Cycle 2
Carbon Cycle 1
Aphotic Zone animals
Heterotrophs
37. Rhododendrons and pines are more suited for growth in acid oil
Desert animals
Substratum-pH
Pyramid of Mass
Physical Environment-Sunlight
38. Have adaptations enabling them to survive in very cod water - with high pressures - and in complete darkness
Aphotic Zone
Organism
Aphotic Zone
Deep-sea Organisms
39. Group of organisms of the same species living together in a given location
Aphotic Zone
Desert animals
Population
Other Cycles
40. 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
Nitrogen cycle 1
Pelagic Zone
Other Cycles
Temperate Coniferous Forest Biome
41. Animals that consume dead animals
Tundra Plants
Scavengers
Conditions for stability in an Ecosystem
Pioneer Organism
42. Integrated system of species that are dependent upon one another for survival
Primary Consumers
Tundra Biome
Community
Tundra Plants
43. Trees such as beech - maple - oaks - and willows shed their leaves during cold winters months
Photic Zone
Climax Community
Substratum-pH
Temperate Deciduous Forest Plants
44. Jungles characterized by high temperatures and torrential rains -found in Central Africa - Central America - the Amazon basic - and Southeast Asia
Herbivores
Tropical Rain Forest Biome
Substratum (soil/rock)
Carbon Cycle 1
45. Nitrates are absorbed by plants are used to syntheisze nucleic acids and plant proteins
Photic Zone animals
Dominant Species
Nitrogen Cycle 2
Desert animals
46. Used to include only the population and not their physical environment
Population
Niche
Biotic Community
Aphotic Zone animals
47. An essential component of amino acids and nucleic acids - which are the building blocks of all living things
Aphotic Zone animals
Substratum-Minerals
Tertiary Consumers
Nitrogen
48. Needs constant energy source and cycling of materials between the living system
Competition Same Niche 3
Community
Temperate Coniferous Plants
Conditions for stability in an Ecosystem
49. Conserve water actively
Temperate Deciduous Forest Biome
Pelagic Zone
Desert Plants
Nitrogen Cycle 4
50. Characterized by low rainfall - although considerably more than the desert biomes receive -provide no shelter for herbivorous mammals from carnivorous predators -ex: East of the Rockies - steppes of the Ukraine - and the pampas of Argentina
Osmoregulation
Climate and weather
Hemeothermic (Warm Blooded)
Grassland Biome
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