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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. When one organism is benefited by the association and the other is not affected
Rootlike holdfasts
Community
Commensalism
Grassland Biome
2. Forest floors contain moss and lichens
Substratum-texture
Intertidal Zone
Substratum-Minerals
Taiga Plants
3. Animals that consume only plants or plant foods
Other Cycles
Herbivores
Coimax Vegetatioin
Lithosphere
4. Body temperature is very close to that of their surroundings -as temperature rises - these organisms become more active
Poikilothermic (Cold Blooded)
Nitrogen Cycle 5
Physical Environment- Water
Hypotonic
5. Chief animal inhabitant is the moose; however - the black bear - wolf - and some birds
Environment
Osmoregulation
Nitrogen cycle 1
Taiga Animals
6. 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
Intertidal Zone
Rootlike holdfasts
Carbon Cycle 3
Marshes
7. Made into nitrites by chemosynthetic bacteria and then to usable nitrates by nitrifying bacteria
Temperate Coniferous Plants
Grassland Biome
Nitrified
Pyramid of Mass
8. Conserve water actively
Desert Plants
Nitrogen Cycle 3
Successive Communities
Producers
9. Animals that consume green plants (herbivores)
Abiotic (Physical) Environment
Ecological Succession
Primary Consumers
Nekton
10. Evolved physical mechanisms that allow them to make Use of the heat produced as a consequence of respiratiion
Biosphere
Hemeothermic (Warm Blooded)
Carnivores
Thundra Animals
11. Region typical of the open seas and can be divided into photic and aphotic zones
Predator-Prey relationship
Littoral Zone Populations
Taiga Animals
Pelagic Zone
12. One or both organisms can't survive without the other
Hemeothermic (Warm Blooded)
Obligatory
Rootlike holdfasts
Thundra Animals
13. Any group of similar organisms that are capable of reproducing
Poikilothermic (Cold Blooded)
Predators
Temperate Deciduous Forest Animals
Species
14. Determined by the same decisive factors-temperatures and rainfall
Photic Zone animals
Intraspecific Interactions
Nature of Biomes
Ecology
15. Animals that consume dead animals
Taiga Plants
Population
Scavengers
Substratum-Minerals
16. Deer - fox - woodchuck - and squirrel
Other Cycles
Temperate Deciduous Forest Animals
Grassland Biome
Taiga Animals
17. Oceans connect to form one continuous body of water - which controls the earth's temperature by absorbing solar heat
Conditions for stability in an Ecosystem
Poikilothermic (Cold Blooded)
Marine Biomes
Heterotrophs
18. 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
Nitrogen Cycle 4
Aphotic Zone
Aphotic Zone
19. 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
Parasitism
Tertiary Consumers
Pyramid of Energy
Hypotonic
20. Contains plankton - passively drifting masses of microscopic photosynthetic and heterotrophic organisms - and nekton - and algae
Photic Zone animals
Carnivores
Secondary Consumers
Tertiary Consumers
21. 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
Nitrogen Cycle 5
Heterotrophs
Nitrogen
22. The orderly process by which one biotic community replaces or succeeds another until a climax community is established
Tundra Biome
Ecological Succession
Marine Biomes
Saprophytes
23. Used to include only the population and not their physical environment
Biotic Community
Pyramid of Energy
Temperate Deciduous Forest Biome
Photic Zone animals
24. Include reproduction and protection from predators and destructive weather
Cohesive Force
Organism
Nitrified
Biotic Environment
25. 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
Tropical Rain Forest Plants
Pyramid of Energy
Polar Region
Pyramid of Mass
26. Includes climate - temperature - availability of light and water - and the local topology
Physical Environment-Sunlight
Competition Same Niche 2
Abiotic (Physical) Environment
Competition
27. Developed long legs and many are hoofed
Food Chain
Deep-sea Organisms
Second Law of Thermodynamics
Grassland Animals
28. Encompasses all that is external to the organism and is necessary for its existence
Environment
Tropical Rain Forest Plants
Heterotrophs
Second Law of Thermodynamics
29. Rivers - lakes - ponds - and marshes
Hydrosphere
Freshwater Biomes
Producers
Poikilothermic (Cold Blooded)
30. Only animal life and other heterotrophic life exists
Lithosphere
Aphotic Zone
Thundra Animals
Coimax Vegetatioin
31. Live in burrows had few birds and mammals are found except those which have developed adaptations for maintaining constant body temperatures
Desert animals
Marine Biomes
Abiotic (Physical) Environment
Material Cycles
32. First to resettle a virgin area
Omnivores
Pioneer Organism
Heterotrophs
Nitrogen Cycle 4
33. Includes all portions of the planet that support life -the atmosphere - the lithosphere - and the hydrosphere
Biosphere
Niche
Food Pyramids
Parasitism
34. Energy is transferred from the original sources in green plants through a series o organisms with repeated stages of consumption and finally decomposition
Food Chain
Heterotrophs
Population
Grassland Animals
35. Needs constant energy source and cycling of materials between the living system
Marshes
Grassland Biome
Tropical Rain Forest Plants
Conditions for stability in an Ecosystem
36. Determine by the amount of decaying plant and animal life in the soil
Organism
Ecosystem
Carbon Cycle 1
Substratum-Humus
37. 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
Decomposer
Aphotic Zone
Taiga Biome
Second Law of Thermodynamics
38. Frozen area with no vegetation and terrestrial animals -animals that do inhabit polar regions generally live near the polar oceans
Aquatic Biomes
Food Pyramids
Polar Region
Biotic Environment
39. When a parasite benefits at the expense of the host
Parasitism
Carnivores
Taiga Animals
Aphotic Zone animals
40. Must be maintained at an optimal level -organisms have adaptations necessary for protection against extremes
Substratum (soil/rock)
Decomposer
Nitrogen Cycle 2
Physical Environment-Temperature
41. Food chain is not a simple linear chain but an intricate web
Tropical Rain Forest Plants
Food Web
Nitrogen Cycle 3
Littoral Zone Populations
42. Recycle water - oxygen - and phosphorus
Desert Biome
Niche
Other Cycles
Temperate Coniferous Plants
43. Have cold winters - warm summers - and moderate rainfall -found in the Northeast and Central-Eastern United States and Central Europe
Nitrified
Temperate Deciduous Forest Biome
Polar Region
Desert animals
44. (living) includes all living things that directly or indirectly influence the life of the organism including the relationships that exist between organisms
Symbionts
Nitrogen Cycle 3
Biotic Environment
Desert Plants
45. Animals eat plants and use the digested nutrients to form carbohydrates - fats - and proteins characteristic of the species. a part of these organic compounds is used as fuel in respiration in plants and animals
Carbon Cycle 2
Environmental Factors
Niche
Desert Plants
46. The ultimate source of energy for all organisms
Intraspecific Interactions
Physical Environment-Sunlight
Nitrified
Hypotonic
47. Links between oceans and land
Saprophytes
Marshes
Intertidal Zone
Lithosphere
48. The major component of the internal environment of all living things
Predator-Prey relationship
Lithosphere
Physical Environment-Temperature
Physical Environment- Water
49. Determines water holding capacity
Temperate Deciduous Forest Biome
Substratum-texture
Epiphytes
Ecology
50. The chief disruptive force
Carbon Cycle 2
Pyramid of Mass
Competition
Food Pyramids