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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. Includes climate - temperature - availability of light and water - and the local topology
Rootlike holdfasts
Abiotic (Physical) Environment
Substratum-pH
Epiphytes
2. Deer - fox - woodchuck - and squirrel
Temperate Deciduous Forest Animals
Benthos
Biome
Ecosystem
3. Developed long legs and many are hoofed
Temperate Deciduous Forest Biome
Nitrified
Herbivores
Grassland Animals
4. Group of organisms of the same species living together in a given location
Population
Nitrogen Cycle 4
Intertidal Zone
Substratum (soil/rock)
5. The oceans
Photic Zone animals
Substratum (soil/rock)
Marine Biomes
Hydrosphere
6. Energy is transferred from the original sources in green plants through a series o organisms with repeated stages of consumption and finally decomposition
Predator-Prey relationship
Climate and weather
Food Chain
Community
7. Used to include only the population and not their physical environment
Desert Plants
Material Cycles
Biotic Community
Hemeothermic (Warm Blooded)
8. Conserve water actively
Desert Plants
Dominant Species
Osmoregulation
Competition Same Niche 3
9. Animals that feed on secondary consumer
Tertiary Consumers
Dominant Species
Biome
Tundra Biome
10. Contains plankton - passively drifting masses of microscopic photosynthetic and heterotrophic organisms - and nekton - and algae
Commensalism
Photic Zone animals
Conditions for stability in an Ecosystem
Secondary Consumers
11. Regiong beneatht he photic zone that receives no light
Pyramid of Numbers
Nitrogen Cycle 5
Nitrified
Aphotic Zone
12. Determines water holding capacity
Saprophytes
Substratum-texture
Population
Competition
13. 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
Food Chain
Benthos
Rootlike holdfasts
Carbon Cycle 2
14. Must be maintained at an optimal level -organisms have adaptations necessary for protection against extremes
Aphotic Zone
Physical Environment-Temperature
Tertiary Consumers
Food Pyramids
15. Algae - sponges - clams - snails - sea urchins - starfish - and crabs
Rootlike holdfasts
Tundra Biome
Communities
Intertidal Zone Population
16. 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
Thundra Animals
Taiga Plants
Food Pyramids
17. Made into nitrites by chemosynthetic bacteria and then to usable nitrates by nitrifying bacteria
Tertiary Consumers
Competition Same Niche 2
Taiga Biome
Nitrified
18. Body temperature is very close to that of their surroundings -as temperature rises - these organisms become more active
Parasitism
Marshes
Poikilothermic (Cold Blooded)
Producers
19. Forest floors contain moss and lichens
Poikilothermic (Cold Blooded)
Nekton
Taiga Plants
Carbon Cycle 3
20. (living) includes all living things that directly or indirectly influence the life of the organism including the relationships that exist between organisms
Climate and weather
Marshes
Tertiary Consumers
Biotic Environment
21. Crawling and sessile organsms
Pyramid of Mass
Community
Benthos
Photic Zone
22. Sunlit layer of the open sea extending to a depth of 250-600ft
Ecology
Aphotic Zone
Photic zone
Freshwater Biomes
23. Animals that consume only plants or plant foods
Secondary Consumers
Herbivores
Intraspecific Interactions
Tundra Biome
24. Vegetation such as vines and eppiphytes
Tropical Rain Forest Plants
Physical Environment- Water
Symbionts
Food Pyramids
25. An essential component of amino acids and nucleic acids - which are the building blocks of all living things
Physical Environment- Water
Rootlike holdfasts
Nitrogen
Substratum-texture
26. Recycle water - oxygen - and phosphorus
Other Cycles
Desert Biome
Poikilothermic (Cold Blooded)
Dominant Species
27. 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
Lithosphere
Nitrogen cycle 1
Aphotic Zone animals
Carbon Cycle 1
28. 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
Physical Environment-Sunlight
Substratum-Minerals
Aquatic Biomes
Nitrogen Cycle 2
29. Live in burrows had few birds and mammals are found except those which have developed adaptations for maintaining constant body temperatures
Desert animals
Tundra Biome
Niche
Parasitism
30. Include reproduction and protection from predators and destructive weather
Cohesive Force
Dominant Species
Primary Consumers
Tropical Rain Forest Plants
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
Taiga Biome
Sere
Littoral Zone Populations
Grassland Animals
32. Needs constant energy source and cycling of materials between the living system
Dentrified
Nitrogen Cycle 3
Conditions for stability in an Ecosystem
Temperate Deciduous Forest Animals
33. Jungles characterized by high temperatures and torrential rains -found in Central Africa - Central America - the Amazon basic - and Southeast Asia
Hydrosphere
Competition Same Niche 3
Producers
Tropical Rain Forest Biome
34. Evolved physical mechanisms that allow them to make Use of the heat produced as a consequence of respiratiion
Predator-Prey relationship
Sere
Ecological Succession
Hemeothermic (Warm Blooded)
35. The nitrogen locked up in the wastes and dead tissues is released by the action of the bacteria of decay - which convert the proteins into ammonia
Niche
Organism
Obligatory
Nitrogen Cycle 4
36. Have cold winters - warm summers - and moderate rainfall -found in the Northeast and Central-Eastern United States and Central Europe
Desert Biome
Hemeothermic (Warm Blooded)
Substratum-Humus
Temperate Deciduous Forest Biome
37. Rivers - lakes - ponds - and marshes
Freshwater Biomes
Autotrophs
Omnivores
Niche
38. Determine by the amount of decaying plant and animal life in the soil
Dentrified
Marine Biomes
Substratum-Humus
Taiga Plants
39. Includes all portions of the planet that support life -the atmosphere - the lithosphere - and the hydrosphere
Climate and weather
Grassland Animals
Obligatory
Biosphere
40. The orderly process by which one biotic community replaces or succeeds another until a climax community is established
Commensalism
Ecological Succession
Hemeothermic (Warm Blooded)
Scavengers
41. Trees such as beech - maple - oaks - and willows shed their leaves during cold winters months
Tundra Plants
Other Cycles
Temperate Deciduous Forest Biome
Temperate Deciduous Forest Plants
42. 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
Predator-Prey relationship
Niche
Parasitism
Desert Plants
43. Oceans connect to form one continuous body of water - which controls the earth's temperature by absorbing solar heat
Primary Consumers
Marine Biomes
Physical Environment-Temperature
Substratum-texture
44. Vegetation has evolved adaptations for water conservation such as needle shaped leaves
Autotrophs
Mutualims
Poikilothermic (Cold Blooded)
Temperate Coniferous Plants
45. Lichens and moss
Commensalism
Tundra Plants
Nitrogen
Abiotic (Physical) Environment
46. 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
Climate and weather
Competition Same Niche 3
Organism
Deep-sea Organisms
47. Live together in an intimate - often permanent association - which may or may not be beneficial to both participants
Other Cycles
Symbionts
Niche
Biome
48. Region on the continental shelf that contains ocean area with depths up to 600 feet and extends several hundred miles from the shores
Biotic Community
Substratum-pH
Littoral Zone
Cohesive Force
49. 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
Carbon Cycle 3
Marshes
Pyramid of Energy
Climate and weather
50. Frozen area with no vegetation and terrestrial animals -animals that do inhabit polar regions generally live near the polar oceans
Polar Region
Marshes
Predators
Nitrogen