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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. Have cold winters - warm summers - and moderate rainfall -found in the Northeast and Central-Eastern United States and Central Europe
Nitrogen cycle 1
Temperate Deciduous Forest Biome
Nitrogen Cycle 4
Biome
2. Consists of populations of different plants and animal species interacting with each other in a given environment
Substratum-texture
Predator-Prey relationship
Food Web
Communities
3. Regiong beneatht he photic zone that receives no light
Temperate Deciduous Forest Biome
Temperate Deciduous Forest Animals
Aphotic Zone
Abiotic (Physical) Environment
4. 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
Deep-sea Organisms
Biosphere
Competition Same Niche 2
Osmoregulation
5. Animals eat the plants and synthesize specific animal proteins form the plant proteins. both plants and animals give off wastes and eventually die
Biotic Environment
Intraspecific Interactions
Sere
Nitrogen Cycle 3
6. Affect the type of vegetation that can be supported
Substratum-Minerals
Omnivores
Tundra Biome
Sere
7. The ultimate source of energy for all organisms
Physical Environment-Sunlight
Taiga Plants
Ecosystem
Producers
8. 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
Substratum-texture
Environmental Factors
Carbon Cycle 3
Commensalism
9. 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
Tropical Rain Forest Plants
Second Law of Thermodynamics
Decomposer
Thundra Animals
10. 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
Decomposer
Food Chain
Abiotic (Physical) Environment
Carbon Cycle 1
11. 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
Grassland Animals
Hydrosphere
Osmoregulation
Aquatic Biomes
12. Evolve toward a balance in which the predator is a regulatory influence on th prey but not a threat to its survival
Lithosphere
Predator-Prey relationship
Marshes
Food Chain
13. Two fates await the ammonia (NH3). some are nitrified or dentrified
Nitrogen Cycle 5
Physical Environment-Temperature
Nitrogen Cycle 4
Other Cycles
14. Live together in an intimate - often permanent association - which may or may not be beneficial to both participants
Substratum-texture
Substratum-Minerals
Nature of Biomes
Symbionts
15. Distinct community in a geographic region
Biome
Tropical Rain Forest Plants
Tropical Rain Forest Biome
Marine Biomes
16. Developed long legs and many are hoofed
Coimax Vegetatioin
Climax Community
Material Cycles
Grassland Animals
17. 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
Scavengers
Intraspecific Interactions
Coimax Vegetatioin
Predator-Prey relationship
18. Individual unit of an ecological system - but the organism itself is composed of smaller units -organs >tissues >cells >molecules >atoms > subatomic particles
Organism
Heterotrophs
Scavengers
Polar Region
19. The chief disruptive force
Competition
Grassland Biome
Parasitism
Predator-Prey relationship
20. Nekton and benthos - scavengers - and predators (fiercely competitive)
Nitrified
Carbon Cycle 1
Aphotic Zone animals
Dentrified
21. Sunlit layer of the open sea extending to a depth of 250-600ft
Photic zone
Substratum-pH
Tundra Plants
Climax Community
22. 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
Grassland Animals
Nitrogen cycle 1
Second Law of Thermodynamics
Species
23. Made into nitrites by chemosynthetic bacteria and then to usable nitrates by nitrifying bacteria
Food Chain
Poikilothermic (Cold Blooded)
Nitrified
Nitrogen Cycle 2
24. Consumer organisms that are higher in hte food chain are usually larger and heavier than those further down
Photic Zone animals
Pyramid of Numbers
Omnivores
Organism
25. Food chain is not a simple linear chain but an intricate web
Parasitism
Osmoregulation
Food Web
Substratum-Minerals
26. Rhododendrons and pines are more suited for growth in acid oil
Nitrogen Cycle 2
Ecology
Ecosystem
Substratum-pH
27. Receive less than ten inches of rain each year; the rain is concentrated within a few heavy cloudbursts -ex: Sahara in Africa and Gobi in Asia
Nitrogen Cycle 5
Hydrosphere
Desert Biome
Intraspecific Interactions
28. Active swimmers such as fish - sharks - or whales that feed on plankton and smaller fish
Nekton
Population
Carnivores
Dominant Species
29. One that exerts control over the other species that are present
Physical Environment-Sunlight
Dominant Species
Competition
Pelagic Zone
30. Symbiotic relationship from which both organisms derive some benefit
Littoral Zone Populations
Grassland Biome
Primary Consumers
Mutualims
31. 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
Second Law of Thermodynamics
Aphotic Zone animals
Taiga Biome
Symbionts
32. When a parasite benefits at the expense of the host
Environmental Factors
Parasitism
Hydrosphere
Ecological Succession
33. Region exposed to low tides that undergoes variations in temperature and periods of dryness
Intertidal Zone
Commensalism
Temperate Deciduous Forest Animals
Heterotrophs
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
Species
Ecology
Taiga Biome
35. Integrated system of species that are dependent upon one another for survival
Primary Consumers
Symbionts
Substratum-texture
Community
36. When one organism is benefited by the association and the other is not affected
Commensalism
Temperate Coniferous Forest Biome
Ecosystem
Pyramid of Mass
37. Animals that consume green plants (herbivores)
Substratum-pH
Photic Zone
Ecology
Primary Consumers
38. Any group of similar organisms that are capable of reproducing
Nitrified
Niche
Freshwater Biomes
Species
39. Includes climate - temperature - availability of light and water - and the local topology
Abiotic (Physical) Environment
Nekton
Species
Temperate Deciduous Forest Plants
40. An essential component of amino acids and nucleic acids - which are the building blocks of all living things
Nitrogen
Hemeothermic (Warm Blooded)
Biome
Hydrosphere
41. Algae - crabs - crustacea - and many different species of fish
Biotic Community
Tertiary Consumers
Littoral Zone Populations
Competition Same Niche
42. 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
Photic Zone
Marshes
Rootlike holdfasts
Abiotic (Physical) Environment
43. Used to include only the population and not their physical environment
Physical Environment-Temperature
Heterotrophs
Biotic Community
Tropical Rain Forest Plants
44. Chief animal inhabitant is the moose; however - the black bear - wolf - and some birds
Aphotic Zone
Symbionts
Taiga Animals
Scavengers
45. Contains plankton - passively drifting masses of microscopic photosynthetic and heterotrophic organisms - and nekton - and algae
Parasitism
Photic Zone animals
Nekton
Tropical Rain Forest Biome
46. 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
Nekton
Temperate Coniferous Forest Biome
Biotic Environment
Biosphere
47. The major component of the internal environment of all living things
Rootlike holdfasts
Taiga Plants
Temperate Deciduous Forest Animals
Physical Environment- Water
48. Monkeys - lizards - snakes - and birds - floor is inhabited by saprophytes
Tropical Rain Forest Animals
Coimax Vegetatioin
Environment
Species
49. In the ocean - the top layer thorugh which light can penetrate - is where all aquatic photosynthetic activity takes place
Competition Same Niche
Photic Zone
Predator-Prey relationship
Nitrified
50. Animals that consume only plants or plant foods
Poikilothermic (Cold Blooded)
Herbivores
Sere
Temperate Deciduous Forest Plants