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Test your basic knowledge |
PCAT Biology Ecology
Start Test
Study First
Subjects
:
pcat
,
biology
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
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)
Other Cycles
Littoral Zone Populations
Hydrosphere
Secondary Consumers
2. Two fates await the ammonia (NH3). some are nitrified or dentrified
Herbivores
Coimax Vegetatioin
Nitrogen Cycle 5
Grassland Biome
3. Used to include only the population and not their physical environment
Biotic Community
Material Cycles
Pyramid of Energy
Temperate Deciduous Forest Plants
4. Include saprophytic organisms and organisms of decay
Scavengers
Substratum-texture
Decomposer
Physical Environment-Temperature
5. The ultimate source of energy for all organisms
Aphotic Zone animals
Temperate Deciduous Forest Biome
Physical Environment-Sunlight
Competition
6. 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
Intraspecific Interactions
Niche
Substratum-Minerals
Nature of Biomes
7. Includes climate - temperature - availability of light and water - and the local topology
Nitrogen Cycle 2
Environment
Biosphere
Abiotic (Physical) Environment
8. When a parasite benefits at the expense of the host
Freshwater Biomes
Substratum (soil/rock)
Parasitism
Pelagic Zone
9. Rhododendrons and pines are more suited for growth in acid oil
Marine Biomes
Biosphere
Decomposer
Substratum-pH
10. Plants growing on other plants - trees grow closely together; sunlight hardly reaches the forest floor
Epiphytes
Substratum-Humus
Climax Community
Communities
11. Live in burrows had few birds and mammals are found except those which have developed adaptations for maintaining constant body temperatures
Substratum-Minerals
Desert animals
Predator-Prey relationship
Nitrogen Cycle 4
12. Consumer organisms that are higher in hte food chain are usually larger and heavier than those further down
Abiotic (Physical) Environment
Pyramid of Numbers
Marine Biomes
Producers
13. Have adaptations enabling them to survive in very cod water - with high pressures - and in complete darkness
Photic Zone animals
Deep-sea Organisms
Abiotic (Physical) Environment
Temperate Deciduous Forest Biome
14. In the ocean - the top layer thorugh which light can penetrate - is where all aquatic photosynthetic activity takes place
Carbon Cycle 2
Photic Zone
Hypotonic
Nitrogen Cycle 5
15. 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
Competition Same Niche 2
Symbionts
Hemeothermic (Warm Blooded)
Hypotonic
16. Region on the continental shelf that contains ocean area with depths up to 600 feet and extends several hundred miles from the shores
Substratum-pH
Ecology
Littoral Zone
Temperate Coniferous Forest Biome
17. 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
Substratum (soil/rock)
Physical Environment-Sunlight
Carbon Cycle 3
18. Includes the community and the environment and usually all five kingdoms
Pyramid of Energy
Intertidal Zone
Marshes
Ecosystem
19. The metabolically produced CO2 is released to the air. The rest of the orgnaic carbon remains locked whthin an organism until its death (except for wastes given off) - at which time decay processes by bacteria return the CO2 to the air
Nitrogen Cycle 4
Carbon Cycle 3
Niche
Temperate Deciduous Forest Biome
20. Freshwater Biomes vs. Saltwater 3: Freshwater biomes - except very large lakes - are affected by variations in _________. temperature of freshwater bodies varies considerably; they may freeze or dry up - and mud from their floors may be stirred up by
Organism
Competition Same Niche 3
Climate and weather
Population
21. 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
Freshwater Biomes
Nitrogen Cycle 3
Competition Same Niche 2
Niche
22. Cannot synthesize their ow food and must depend upon autotrophs or others in the ecosystem to obtain their food
Marshes
Epiphytes
Thundra Animals
Heterotrophs
23. 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
Temperate Coniferous Plants
Photic Zone animals
Carbon Cycle 3
24. Links between oceans and land
Marshes
Nitrogen Cycle 3
Physical Environment-Temperature
Aphotic Zone
25. Determines the nature of plant and animal life in the soil
Tundra Plants
Substratum (soil/rock)
Substratum-Minerals
Climax Community
26. Evolved physical mechanisms that allow them to make Use of the heat produced as a consequence of respiratiion
Temperate Deciduous Forest Plants
Hemeothermic (Warm Blooded)
Decomposer
Coimax Vegetatioin
27. Recycle water - oxygen - and phosphorus
Primary Consumers
Littoral Zone
Sere
Other Cycles
28. Lichens and moss
Tundra Plants
Nitrogen Cycle 4
Communities
Desert Plants
29. Oceans connect to form one continuous body of water - which controls the earth's temperature by absorbing solar heat
Competition Same Niche
Sere
Photic zone
Marine Biomes
30. Treeless - frozen plain found between the taiga lands and the northern ice sheets - very short summer and thus a very short growing season during which time the ground becomes wet and marshy
Tundra Biome
Parasitism
Temperate Deciduous Forest Animals
Substratum (soil/rock)
31. Include those protists and fungi that decompose dead organic matter externally and absorb the nutrients - they consistitute a vital link in the cycling of material within the ecosystem
Predator-Prey relationship
Saprophytes
Other Cycles
Conditions for stability in an Ecosystem
32. One that exerts control over the other species that are present
Marine Biomes
Aquatic Biomes
Autotrophs
Dominant Species
33. Group of organisms of the same species living together in a given location
Substratum (soil/rock)
Population
Commensalism
Second Law of Thermodynamics
34. Region exposed to low tides that undergoes variations in temperature and periods of dryness
Desert Biome
Hydrosphere
Intertidal Zone
Nitrogen Cycle 3
35. Animals that consume only plants or plant foods
Heterotrophs
Dominant Species
Decomposer
Herbivores
36. Only animal life and other heterotrophic life exists
Intertidal Zone Population
Aphotic Zone
Temperate Coniferous Plants
Polar Region
37. Community in an ecological succession is identified by a dominant species
Herbivores
Grassland Biome
Physical Environment-Temperature
Sere
38. Include reproduction and protection from predators and destructive weather
Primary Consumers
Cohesive Force
Nitrogen Cycle 4
Pioneer Organism
39. Without a constant input of energy from the sun - an ecosystem would soon run down - as food is transferred from one level of the food chain to the next - a transfer of energy occurs
Food Pyramids
Conditions for stability in an Ecosystem
Physical Environment-Sunlight
Competition Same Niche 3
40. (living) includes all living things that directly or indirectly influence the life of the organism including the relationships that exist between organisms
Temperate Coniferous Plants
Predators
Desert animals
Biotic Environment
41. Regiong beneatht he photic zone that receives no light
Community
Nitrogen Cycle 4
Aphotic Zone
Organism
42. Chief animal inhabitant is the moose; however - the black bear - wolf - and some birds
Organism
Ecosystem
Conditions for stability in an Ecosystem
Taiga Animals
43. Composed of populations that are able to exist under the new conditions
Intertidal Zone
Successive Communities
Tundra Plants
Predators
44. Region typical of the open seas and can be divided into photic and aphotic zones
Carnivores
Physical Environment-Temperature
Climate and weather
Pelagic Zone
45. Affect the type of vegetation that can be supported
Substratum-Minerals
Temperate Deciduous Forest Biome
Food Web
Osmoregulation
46. Animals that feed on secondary consumer
Organism
Physical Environment- Water
Tertiary Consumers
Temperate Deciduous Forest Animals
47. The orderly process by which one biotic community replaces or succeeds another until a climax community is established
Polar Region
Ecological Succession
Hydrosphere
Abiotic (Physical) Environment
48. Nekton and benthos - scavengers - and predators (fiercely competitive)
Nitrogen cycle 1
Photic Zone animals
Aphotic Zone animals
Substratum-pH
49. Conserve water actively
Physical Environment- Water
Climate and weather
Desert Plants
Photic Zone animals
50. Individual unit of an ecological system - but the organism itself is composed of smaller units -organs >tissues >cells >molecules >atoms > subatomic particles
Photic Zone
Cohesive Force
Lithosphere
Organism