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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. Needs constant energy source and cycling of materials between the living system
Conditions for stability in an Ecosystem
Nitrified
Nitrogen Cycle 3
Herbivores
2. Only animal life and other heterotrophic life exists
Aphotic Zone
Physical Environment-Temperature
Substratum-texture
Nitrified
3. Developed long legs and many are hoofed
Grassland Animals
Predators
Food Pyramids
Nekton
4. Have adaptations enabling them to survive in very cod water - with high pressures - and in complete darkness
Tundra Plants
Deep-sea Organisms
Osmoregulation
Producers
5. Made into nitrites by chemosynthetic bacteria and then to usable nitrates by nitrifying bacteria
Nitrogen Cycle 5
Symbionts
Nitrified
Carnivores
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
Carbon Cycle 3
Biotic Community
Nitrogen Cycle 2
Parasitism
7. One or both organisms can't survive without the other
Desert Plants
Obligatory
Temperate Deciduous Forest Animals
Decomposer
8. Animals that feed on secondary consumer
Benthos
Physical Environment- Water
Environmental Factors
Tertiary Consumers
9. Material is cycled and recycled betweenn organisms and their environments - passing from inorganic forms to organic forms and then back to the inorganic forms
Obligatory
Intertidal Zone Population
Competition Same Niche 2
Material Cycles
10. The major component of the internal environment of all living things
Intertidal Zone
Temperate Coniferous Forest Biome
Biosphere
Physical Environment- Water
11. 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
Second Law of Thermodynamics
Taiga Biome
Osmoregulation
Tundra Biome
12. Oceans connect to form one continuous body of water - which controls the earth's temperature by absorbing solar heat
Scavengers
Photic Zone
Pioneer Organism
Marine Biomes
13. The vegetation that becomes dominant and stable after years of evolutiionary development
Omnivores
Marine Biomes
Second Law of Thermodynamics
Coimax Vegetatioin
14. 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
Climax Community
Pyramid of Energy
Hydrosphere
Taiga Plants
15. 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
Tropical Rain Forest Biome
Temperate Coniferous Forest Biome
Nitrogen Cycle 4
Poikilothermic (Cold Blooded)
16. Links between oceans and land
Hydrosphere
Littoral Zone
Temperate Coniferous Plants
Marshes
17. Forest floors contain moss and lichens
Substratum (soil/rock)
Dominant Species
Taiga Plants
Nitrogen Cycle 4
18. Live in burrows had few birds and mammals are found except those which have developed adaptations for maintaining constant body temperatures
Intertidal Zone Population
Substratum (soil/rock)
Tropical Rain Forest Plants
Desert animals
19. Rhododendrons and pines are more suited for growth in acid oil
Carnivores
Decomposer
Substratum-pH
Pyramid of Mass
20. Region exposed to low tides that undergoes variations in temperature and periods of dryness
Tundra Biome
Physical Environment-Temperature
Dentrified
Intertidal Zone
21. Have cold winters - warm summers - and moderate rainfall -found in the Northeast and Central-Eastern United States and Central Europe
Temperate Deciduous Forest Biome
Coimax Vegetatioin
Taiga Animals
Desert Plants
22. Adaptations for maintaining their internal osmolarity and conserving water
Climate and weather
Intertidal Zone Population
Osmoregulation
Photic Zone animals
23. Deer - fox - woodchuck - and squirrel
Temperate Deciduous Forest Animals
Thundra Animals
Deep-sea Organisms
Coimax Vegetatioin
24. Animals that consume primary consumers (carnivores)
Desert Biome
Secondary Consumers
Other Cycles
Pioneer Organism
25. Frozen area with no vegetation and terrestrial animals -animals that do inhabit polar regions generally live near the polar oceans
Photic Zone
Polar Region
Carbon Cycle 1
Grassland Biome
26. Any group of similar organisms that are capable of reproducing
Pelagic Zone
Nitrogen Cycle 2
Littoral Zone
Species
27. Must be maintained at an optimal level -organisms have adaptations necessary for protection against extremes
Pyramid of Energy
Substratum-Humus
Physical Environment-Temperature
Polar Region
28. Consumer organisms that are higher in hte food chain are usually larger and heavier than those further down
Food Web
Littoral Zone Populations
Pyramid of Numbers
Substratum-Minerals
29. Determines the nature of plant and animal life in the soil
Dominant Species
Substratum (soil/rock)
Population
Substratum-texture
30. Vegetation such as vines and eppiphytes
Second Law of Thermodynamics
Tropical Rain Forest Plants
Organism
Littoral Zone Populations
31. Rock and soil surface
Lithosphere
Conditions for stability in an Ecosystem
Scavengers
Competition Same Niche 2
32. Determined by the same decisive factors-temperatures and rainfall
Competition Same Niche
Saprophytes
Taiga Plants
Nature of Biomes
33. Distinct community in a geographic region
Osmoregulation
Biome
Niche
Rootlike holdfasts
34. Crawling and sessile organsms
Taiga Animals
Benthos
Substratum (soil/rock)
Rootlike holdfasts
35. Live together in an intimate - often permanent association - which may or may not be beneficial to both participants
Symbionts
Food Web
Nitrogen Cycle 5
Ecological Succession
36. Affect the type of vegetation that can be supported
Substratum-Minerals
Substratum-Humus
Scavengers
Environmental Factors
37. When a parasite benefits at the expense of the host
Saprophytes
Parasitism
Nekton
Competition Same Niche 2
38. Evolved physical mechanisms that allow them to make Use of the heat produced as a consequence of respiratiion
Nitrogen Cycle 3
Nitrified
Carbon Cycle 3
Hemeothermic (Warm Blooded)
39. Autotrophic green plants and chemosynthetic bacteria that use the energy of the sun and simple raw materials to manufacture carbohydrates - proteins - and lipids
Photic Zone animals
Producers
Desert animals
Biosphere
40. The study of interactions between organisms and their environment
Desert Plants
Community
Ecology
Cohesive Force
41. When one organism is benefited by the association and the other is not affected
Tropical Rain Forest Plants
Temperate Deciduous Forest Biome
Littoral Zone Populations
Commensalism
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
Taiga Plants
Communities
Competition Same Niche 2
Niche
43. The oceans
Hydrosphere
Tropical Rain Forest Biome
Conditions for stability in an Ecosystem
Tropical Rain Forest Plants
44. Algae - crabs - crustacea - and many different species of fish
Littoral Zone Populations
Freshwater Biomes
Ecological Succession
Competition Same Niche 2
45. Rivers - lakes - ponds - and marshes
Thundra Animals
Desert animals
Freshwater Biomes
Omnivores
46. 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
Temperate Coniferous Plants
Predator-Prey relationship
Hypotonic
Aphotic Zone
47. Consists of populations of different plants and animal species interacting with each other in a given environment
Temperate Coniferous Plants
Nature of Biomes
Communities
Temperate Deciduous Forest Animals
48. Food chain is not a simple linear chain but an intricate web
Food Chain
Tropical Rain Forest Animals
Food Web
Rootlike holdfasts
49. First to resettle a virgin area
Saprophytes
Marine Biomes
Littoral Zone Populations
Pioneer Organism
50. Trees such as beech - maple - oaks - and willows shed their leaves during cold winters months
Temperate Deciduous Forest Plants
Rootlike holdfasts
Conditions for stability in an Ecosystem
Lithosphere
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