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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. Monkeys - lizards - snakes - and birds - floor is inhabited by saprophytes
Biome
Physical Environment-Sunlight
Biotic Community
Tropical Rain Forest Animals
2. Evolved physical mechanisms that allow them to make Use of the heat produced as a consequence of respiratiion
Intraspecific Interactions
Hemeothermic (Warm Blooded)
Food Pyramids
Herbivores
3. The oceans
Climate and weather
Temperate Deciduous Forest Biome
Hydrosphere
Desert Biome
4. Jungles characterized by high temperatures and torrential rains -found in Central Africa - Central America - the Amazon basic - and Southeast Asia
Coimax Vegetatioin
Tropical Rain Forest Biome
Benthos
Photic Zone
5. First to resettle a virgin area
Material Cycles
Substratum-texture
Pioneer Organism
Carbon Cycle 3
6. Recycle water - oxygen - and phosphorus
Pioneer Organism
Other Cycles
Communities
Aphotic Zone
7. Rock and soil surface
Temperate Coniferous Forest Biome
Lithosphere
Coimax Vegetatioin
Substratum-Minerals
8. Individual unit of an ecological system - but the organism itself is composed of smaller units -organs >tissues >cells >molecules >atoms > subatomic particles
Taiga Biome
Secondary Consumers
Organism
Food Pyramids
9. Needs constant energy source and cycling of materials between the living system
Photic Zone animals
Substratum-Humus
Herbivores
Conditions for stability in an Ecosystem
10. Evolve toward a balance in which the predator is a regulatory influence on th prey but not a threat to its survival
Aphotic Zone animals
Deep-sea Organisms
Second Law of Thermodynamics
Predator-Prey relationship
11. Includes all portions of the planet that support life -the atmosphere - the lithosphere - and the hydrosphere
Grassland Animals
Biosphere
Primary Consumers
Hemeothermic (Warm Blooded)
12. Includes climate - temperature - availability of light and water - and the local topology
Abiotic (Physical) Environment
Pyramid of Mass
Polar Region
Photic Zone
13. 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
Obligatory
Climate and weather
Pelagic Zone
Carbon Cycle 1
14. Contains plankton - passively drifting masses of microscopic photosynthetic and heterotrophic organisms - and nekton - and algae
Decomposer
Scavengers
Photic Zone animals
Food Pyramids
15. Have cold winters - warm summers - and moderate rainfall -found in the Northeast and Central-Eastern United States and Central Europe
Photic Zone animals
Temperate Deciduous Forest Biome
Temperate Deciduous Forest Plants
Nitrogen Cycle 5
16. Includes the community and the environment and usually all five kingdoms
Substratum-Minerals
Biotic Community
Dentrified
Ecosystem
17. Energy is transferred from the original sources in green plants through a series o organisms with repeated stages of consumption and finally decomposition
Carbon Cycle 3
Food Chain
Taiga Animals
Dominant Species
18. Developed long legs and many are hoofed
Biosphere
Grassland Animals
Intertidal Zone
Sere
19. Distinct community in a geographic region
Biotic Environment
Aphotic Zone
Biome
Tundra Plants
20. 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
Environmental Factors
Food Web
Desert animals
Tundra Biome
21. Rivers - lakes - ponds - and marshes
Pyramid of Energy
Freshwater Biomes
Biotic Environment
Temperate Deciduous Forest Animals
22. Links between oceans and land
Nitrogen Cycle 2
Marshes
Ecosystem
Taiga Plants
23. Chief animal inhabitant is the moose; however - the black bear - wolf - and some birds
Species
Taiga Animals
Temperate Deciduous Forest Animals
Tundra Plants
24. The stable - living part of the ecosystem in whicih populations exist in balance with each other and with the environment
Pioneer Organism
Species
Climax Community
Temperate Deciduous Forest Biome
25. Regiong beneatht he photic zone that receives no light
Secondary Consumers
Coimax Vegetatioin
Communities
Aphotic Zone
26. 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
Photic Zone animals
Biotic Community
Substratum-Minerals
Pyramid of Energy
27. Region typical of the open seas and can be divided into photic and aphotic zones
Pelagic Zone
Secondary Consumers
Nitrogen Cycle 2
Dominant Species
28. Nekton and benthos - scavengers - and predators (fiercely competitive)
Freshwater Biomes
Aphotic Zone animals
Mutualims
Producers
29. Algae - sponges - clams - snails - sea urchins - starfish - and crabs
Photic Zone animals
Hemeothermic (Warm Blooded)
Commensalism
Intertidal Zone Population
30. Symbiotic relationship from which both organisms derive some benefit
Niche
Parasitism
Freshwater Biomes
Mutualims
31. Region on the continental shelf that contains ocean area with depths up to 600 feet and extends several hundred miles from the shores
Littoral Zone
Tundra Biome
Niche
Competition Same Niche
32. 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
Nitrogen cycle 1
Organism
Grassland Biome
Taiga Plants
33. Lichens and moss
Cohesive Force
Temperate Deciduous Forest Plants
Saprophytes
Tundra Plants
34. Receive less rainfall than the temperate forests - have long - cold winters - and are inhabited by single coniferous tree-the spruce -extreme northern parts of Canada and Russia
Commensalism
Saprophytes
Taiga Biome
Decomposer
35. When one organism is benefited by the association and the other is not affected
Photic Zone animals
Dominant Species
Taiga Animals
Commensalism
36. Animals that consume green plants (herbivores)
Food Chain
Competition Same Niche 2
Primary Consumers
Conditions for stability in an Ecosystem
37. 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
Environment
Tropical Rain Forest Animals
Conditions for stability in an Ecosystem
Competition Same Niche 3
38. The ultimate source of energy for all organisms
Physical Environment-Sunlight
Nekton
Obligatory
Niche
39. Sunlit layer of the open sea extending to a depth of 250-600ft
Biotic Community
Osmoregulation
Biotic Environment
Photic zone
40. Adaptations for maintaining their internal osmolarity and conserving water
Freshwater Biomes
Grassland Biome
Nitrogen Cycle 4
Osmoregulation
41. Animals that consume primary consumers (carnivores)
Secondary Consumers
Biotic Community
Photic Zone
Substratum-Minerals
42. Must be maintained at an optimal level -organisms have adaptations necessary for protection against extremes
Photic zone
Physical Environment-Temperature
Coimax Vegetatioin
Competition Same Niche 2
43. 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
Poikilothermic (Cold Blooded)
Carbon Cycle 3
Polar Region
Climax Community
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
Tundra Plants
Desert animals
Commensalism
Hypotonic
45. Oceans connect to form one continuous body of water - which controls the earth's temperature by absorbing solar heat
Substratum-Minerals
Biotic Community
Marine Biomes
Other Cycles
46. One that exerts control over the other species that are present
Dominant Species
Intertidal Zone
Substratum (soil/rock)
Marine Biomes
47. Individuals belonging to the same species use the same resources and if a particular resource is limited - then these organisms must compete with one another
Intraspecific Interactions
Grassland Biome
Biotic Community
Littoral Zone Populations
48. Nitrates are absorbed by plants are used to syntheisze nucleic acids and plant proteins
Temperate Coniferous Plants
Desert Plants
Nitrogen Cycle 2
Pioneer Organism
49. Animals that consume dead animals
Rootlike holdfasts
Tropical Rain Forest Plants
Community
Scavengers
50. More than 70% of earth -plants have little controlling influence in communities -most stable ecosystems; the conditions affecting temperature - amount of available oxygen and cabon dioxide - and amount of suspended or dissolve materials are very stab
Carbon Cycle 3
Temperate Deciduous Forest Animals
Sere
Aquatic Biomes