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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.
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. Vegetation such as vines and eppiphytes
Competition
Tropical Rain Forest Plants
Epiphytes
Coimax Vegetatioin
2. Polar bears - musk oxen - and arctic hens
Carnivores
Thundra Animals
Nitrogen Cycle 4
Osmoregulation
3. Material is cycled and recycled betweenn organisms and their environments - passing from inorganic forms to organic forms and then back to the inorganic forms
Substratum (soil/rock)
Epiphytes
Organism
Material Cycles
4. Animals that consume dead animals
Scavengers
Climax Community
Conditions for stability in an Ecosystem
Thundra Animals
5. Includes all portions of the planet that support life -the atmosphere - the lithosphere - and the hydrosphere
Grassland Animals
Ecological Succession
Biosphere
Tropical Rain Forest Animals
6. One that exerts control over the other species that are present
Second Law of Thermodynamics
Temperate Coniferous Plants
Nitrogen Cycle 3
Dominant Species
7. Chief animal inhabitant is the moose; however - the black bear - wolf - and some birds
Biosphere
Nitrogen Cycle 4
Taiga Animals
Aphotic Zone
8. Distinct community in a geographic region
Biome
Osmoregulation
Competition Same Niche 3
Carbon Cycle 1
9. Made into nitrites by chemosynthetic bacteria and then to usable nitrates by nitrifying bacteria
Nitrified
Marshes
Mutualims
Freshwater Biomes
10. Trees such as beech - maple - oaks - and willows shed their leaves during cold winters months
Mutualims
Coimax Vegetatioin
Temperate Deciduous Forest Plants
Parasitism
11. Encompasses all that is external to the organism and is necessary for its existence
Grassland Animals
Environment
Food Chain
Second Law of Thermodynamics
12. Individual unit of an ecological system - but the organism itself is composed of smaller units -organs >tissues >cells >molecules >atoms > subatomic particles
Physical Environment- Water
Organism
Intertidal Zone
Benthos
13. 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 Plants
Tundra Biome
Competition Same Niche 2
Secondary Consumers
14. Regiong beneatht he photic zone that receives no light
Carbon Cycle 2
Community
Ecosystem
Aphotic Zone
15. Animals that only eat other animals -possess pointed teeth and fang-like canine teeth for tearing flesh -have shorter digestive tracts because the easier digestibility of animal food
Substratum-texture
Carnivores
Autotrophs
Nitrogen Cycle 4
16. Active swimmers such as fish - sharks - or whales that feed on plankton and smaller fish
Nekton
Grassland Animals
Substratum-pH
Producers
17. Determines water holding capacity
Pyramid of Energy
Substratum-texture
Population
Aphotic Zone animals
18. When one organism is benefited by the association and the other is not affected
Competition Same Niche 3
Rootlike holdfasts
Commensalism
Substratum-texture
19. Jungles characterized by high temperatures and torrential rains -found in Central Africa - Central America - the Amazon basic - and Southeast Asia
Tropical Rain Forest Biome
Aphotic Zone
Pelagic Zone
Saprophytes
20. Have adaptations enabling them to survive in very cod water - with high pressures - and in complete darkness
Photic Zone
Deep-sea Organisms
Nitrogen Cycle 3
Physical Environment- Water
21. Have cold winters - warm summers - and moderate rainfall -found in the Northeast and Central-Eastern United States and Central Europe
Species
Temperate Deciduous Forest Biome
Primary Consumers
Niche
22. 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
Biome
Second Law of Thermodynamics
Nature of Biomes
Substratum (soil/rock)
23. 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
Nitrogen cycle 1
Autotrophs
Intraspecific Interactions
Substratum (soil/rock)
24. Contains plankton - passively drifting masses of microscopic photosynthetic and heterotrophic organisms - and nekton - and algae
Commensalism
Tropical Rain Forest Animals
Photic Zone animals
Coimax Vegetatioin
25. Links between oceans and land
Intertidal Zone Population
Marshes
Other Cycles
Competition Same Niche 3
26. Region on the continental shelf that contains ocean area with depths up to 600 feet and extends several hundred miles from the shores
Competition Same Niche 3
Predators
Grassland Biome
Littoral Zone
27. Animals eat the plants and synthesize specific animal proteins form the plant proteins. both plants and animals give off wastes and eventually die
Nitrogen
Aphotic Zone
Nitrogen Cycle 3
Hypotonic
28. 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
Coimax Vegetatioin
Carnivores
Hypotonic
Temperate Deciduous Forest Plants
29. First to resettle a virgin area
Taiga Plants
Pioneer Organism
Tropical Rain Forest Animals
Intertidal Zone
30. Two fates await the ammonia (NH3). some are nitrified or dentrified
Mutualims
Saprophytes
Nitrogen Cycle 5
Predators
31. Determine by the amount of decaying plant and animal life in the soil
Predators
Ecological Succession
Substratum-Humus
Temperate Deciduous Forest Animals
32. In the ocean - the top layer thorugh which light can penetrate - is where all aquatic photosynthetic activity takes place
Photic Zone
Ecosystem
Aphotic Zone animals
Substratum (soil/rock)
33. Free-living organisms that feed on other living organisms
Nitrogen Cycle 4
Predators
Biotic Environment
Substratum-texture
34. Live in burrows had few birds and mammals are found except those which have developed adaptations for maintaining constant body temperatures
Predator-Prey relationship
Desert animals
Substratum-texture
Nitrogen
35. When a parasite benefits at the expense of the host
Freshwater Biomes
Substratum-pH
Parasitism
Predator-Prey relationship
36. Animals that consume primary consumers (carnivores)
Tertiary Consumers
Desert animals
Substratum-texture
Secondary Consumers
37. 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
Tundra Plants
Grassland Biome
Competition Same Niche 2
Pyramid of Energy
38. Lichens and moss
Organism
Scavengers
Herbivores
Tundra Plants
39. Composed of populations that are able to exist under the new conditions
Biotic Environment
Marine Biomes
Successive Communities
Osmoregulation
40. Algae - sponges - clams - snails - sea urchins - starfish - and crabs
Other Cycles
Competition Same Niche 2
Obligatory
Intertidal Zone Population
41. 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
Osmoregulation
Other Cycles
Freshwater Biomes
42. Deer - fox - woodchuck - and squirrel
Epiphytes
Tundra Plants
Temperate Deciduous Forest Animals
Substratum-Humus
43. Animals that feed on secondary consumer
Tundra Biome
Environmental Factors
Tertiary Consumers
Nitrogen Cycle 5
44. 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
Marshes
Competition Same Niche 2
Substratum-Humus
Nature of Biomes
45. Cannot synthesize their ow food and must depend upon autotrophs or others in the ecosystem to obtain their food
Heterotrophs
Carbon Cycle 2
Rootlike holdfasts
Substratum-texture
46. Animals that consume green plants (herbivores)
Carbon Cycle 3
Competition Same Niche 3
Successive Communities
Primary Consumers
47. Community in an ecological succession is identified by a dominant species
Tertiary Consumers
Grassland Animals
Tropical Rain Forest Biome
Sere
48. Symbiotic relationship from which both organisms derive some benefit
Competition Same Niche 2
Mutualims
Symbionts
Freshwater Biomes
49. Evolve toward a balance in which the predator is a regulatory influence on th prey but not a threat to its survival
Second Law of Thermodynamics
Hypotonic
Predator-Prey relationship
Nekton
50. Frozen area with no vegetation and terrestrial animals -animals that do inhabit polar regions generally live near the polar oceans
Osmoregulation
Species
Polar Region
Freshwater Biomes
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