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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. The oceans
Sere
Conditions for stability in an Ecosystem
Hydrosphere
Lithosphere
2. Animals that consume dead animals
Tundra Biome
Hypotonic
Scavengers
Temperate Deciduous Forest Animals
3. Nekton and benthos - scavengers - and predators (fiercely competitive)
Aphotic Zone animals
Tertiary Consumers
Littoral Zone Populations
Epiphytes
4. Determine by the amount of decaying plant and animal life in the soil
Substratum-Humus
Nitrogen Cycle 3
Scavengers
Tropical Rain Forest Plants
5. Autotrophic green plants and chemosynthetic bacteria that use the energy of the sun and simple raw materials to manufacture carbohydrates - proteins - and lipids
Littoral Zone
Marine Biomes
Marshes
Producers
6. Cold - dry - and inhabited by fir - pine - and spruce trees -much vegetation has evolved adaptations for water conservation such as needle-shaped leaves -Extreme Northern Part of the US and in Southern Canada
Ecology
Aphotic Zone
Tropical Rain Forest Animals
Temperate Coniferous Forest Biome
7. Free-living organisms that feed on other living organisms
Predators
Physical Environment-Temperature
Photic zone
Rootlike holdfasts
8. Made into nitrites by chemosynthetic bacteria and then to usable nitrates by nitrifying bacteria
Deep-sea Organisms
Nitrified
Aphotic Zone
Tropical Rain Forest Animals
9. Determines the nature of plant and animal life in the soil
Pelagic Zone
Coimax Vegetatioin
Second Law of Thermodynamics
Substratum (soil/rock)
10. Includes climate - temperature - availability of light and water - and the local topology
Marshes
Nekton
Abiotic (Physical) Environment
Temperate Coniferous Forest Biome
11. 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
Pioneer Organism
Pyramid of Energy
Deep-sea Organisms
Intraspecific Interactions
12. Adaptations for maintaining their internal osmolarity and conserving water
Osmoregulation
Pyramid of Energy
Littoral Zone
Marine Biomes
13. Individual unit of an ecological system - but the organism itself is composed of smaller units -organs >tissues >cells >molecules >atoms > subatomic particles
Hydrosphere
Organism
Ecology
Deep-sea Organisms
14. Links between oceans and land
Autotrophs
Community
Substratum-pH
Marshes
15. The study of interactions between organisms and their environment
Ecology
Nitrogen Cycle 5
Pioneer Organism
Temperate Deciduous Forest Biome
16. Symbiotic relationship from which both organisms derive some benefit
Food Pyramids
Intraspecific Interactions
Mutualims
Tundra Biome
17. Frozen area with no vegetation and terrestrial animals -animals that do inhabit polar regions generally live near the polar oceans
Polar Region
Organism
Obligatory
Community
18. The stable - living part of the ecosystem in whicih populations exist in balance with each other and with the environment
Climax Community
Physical Environment-Sunlight
Community
Nitrogen
19. 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
Taiga Biome
Nekton
Predators
Substratum-texture
20. Animals that consume green plants (herbivores)
Poikilothermic (Cold Blooded)
Taiga Biome
Primary Consumers
Dominant Species
21. An essential component of amino acids and nucleic acids - which are the building blocks of all living things
Nature of Biomes
Ecology
Photic Zone
Nitrogen
22. Body temperature is very close to that of their surroundings -as temperature rises - these organisms become more active
Omnivores
Desert Plants
Polar Region
Poikilothermic (Cold Blooded)
23. Distinct community in a geographic region
Communities
Taiga Plants
Biome
Pyramid of Mass
24. 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
Littoral Zone
Carbon Cycle 1
Environment
Producers
25. Any group of similar organisms that are capable of reproducing
Nitrogen Cycle 4
Primary Consumers
Species
Pelagic Zone
26. Developed long legs and many are hoofed
Conditions for stability in an Ecosystem
Scavengers
Population
Grassland Animals
27. 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
Ecological Succession
Successive Communities
Rootlike holdfasts
Secondary Consumers
28. Determined by the same decisive factors-temperatures and rainfall
Nature of Biomes
Littoral Zone Populations
Nitrogen
Pyramid of Numbers
29. Region typical of the open seas and can be divided into photic and aphotic zones
Pelagic Zone
Marshes
Secondary Consumers
Population
30. Chief animal inhabitant is the moose; however - the black bear - wolf - and some birds
Taiga Animals
Dentrified
Ecosystem
Thundra Animals
31. One or both organisms can't survive without the other
Obligatory
Taiga Animals
Climate and weather
Substratum-Humus
32. Contains plankton - passively drifting masses of microscopic photosynthetic and heterotrophic organisms - and nekton - and algae
Dentrified
Photic Zone animals
Temperate Coniferous Plants
Saprophytes
33. Vegetation has evolved adaptations for water conservation such as needle shaped leaves
Hydrosphere
Hypotonic
Temperate Coniferous Plants
Freshwater Biomes
34. 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
Second Law of Thermodynamics
Temperate Coniferous Forest Biome
Nitrified
Nitrogen Cycle 4
35. Jungles characterized by high temperatures and torrential rains -found in Central Africa - Central America - the Amazon basic - and Southeast Asia
Tropical Rain Forest Biome
Tundra Plants
Cohesive Force
Food Web
36. Needs constant energy source and cycling of materials between the living system
Grassland Animals
Climate and weather
Conditions for stability in an Ecosystem
Dominant Species
37. Nitrates are absorbed by plants are used to syntheisze nucleic acids and plant proteins
Mutualims
Taiga Animals
Nitrogen Cycle 2
Species
38. Animals that consume only plants or plant foods
Herbivores
Aphotic Zone animals
Abiotic (Physical) Environment
Taiga Animals
39. Include saprophytic organisms and organisms of decay
Decomposer
Photic zone
Climate and weather
Osmoregulation
40. 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
Substratum-texture
Photic Zone animals
Biotic Environment
Tundra Biome
41. Cannot synthesize their ow food and must depend upon autotrophs or others in the ecosystem to obtain their food
Predators
Sere
Aphotic Zone animals
Heterotrophs
42. Energy is transferred from the original sources in green plants through a series o organisms with repeated stages of consumption and finally decomposition
Marshes
Carbon Cycle 2
Population
Food Chain
43. In the ocean - the top layer thorugh which light can penetrate - is where all aquatic photosynthetic activity takes place
Tropical Rain Forest Animals
Ecology
Photic Zone
Commensalism
44. Community in an ecological succession is identified by a dominant species
Substratum-pH
Taiga Animals
Sere
Desert Plants
45. Live in burrows had few birds and mammals are found except those which have developed adaptations for maintaining constant body temperatures
Photic Zone
Desert Biome
Dentrified
Desert animals
46. Region exposed to low tides that undergoes variations in temperature and periods of dryness
Competition Same Niche
Intertidal Zone
Aphotic Zone
Nitrogen Cycle 4
47. Include reproduction and protection from predators and destructive weather
Cohesive Force
Nekton
Osmoregulation
Food Chain
48. Conserve water actively
Pyramid of Mass
Successive Communities
Producers
Desert Plants
49. Deer - fox - woodchuck - and squirrel
Carnivores
Taiga Plants
Hemeothermic (Warm Blooded)
Temperate Deciduous Forest Animals
50. 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
Nitrified
Pyramid of Mass
Freshwater Biomes
Tropical Rain Forest Plants
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