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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. Only animal life and other heterotrophic life exists
Parasitism
Marshes
Aphotic Zone
Intertidal Zone
2. Determines water holding capacity
Biome
Tundra Plants
Substratum-texture
Freshwater Biomes
3. Organisms that manufacture their own food
Material Cycles
Competition Same Niche
Grassland Animals
Autotrophs
4. Lichens and moss
Tundra Plants
Carbon Cycle 3
Photic Zone animals
Substratum (soil/rock)
5. 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
Material Cycles
Temperate Coniferous Forest Biome
Second Law of Thermodynamics
Ecosystem
6. Plants growing on other plants - trees grow closely together; sunlight hardly reaches the forest floor
Competition Same Niche 2
Epiphytes
Physical Environment- Water
Material Cycles
7. Have adaptations enabling them to survive in very cod water - with high pressures - and in complete darkness
Deep-sea Organisms
Biome
Tropical Rain Forest Animals
Dentrified
8. Free-living organisms that feed on other living organisms
Substratum-texture
Population
Temperate Deciduous Forest Animals
Predators
9. Conserve water actively
Biotic Environment
Hydrosphere
Temperate Deciduous Forest Animals
Desert Plants
10. The study of interactions between organisms and their environment
Photic Zone
Rootlike holdfasts
Ecology
Tropical Rain Forest Biome
11. 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
Producers
Abiotic (Physical) Environment
Secondary Consumers
Desert Biome
12. Active swimmers such as fish - sharks - or whales that feed on plankton and smaller fish
Intertidal Zone
Food Chain
Nekton
Nitrified
13. Without a constant input of energy from the sun - an ecosystem would soon run down - as food is transferred from one level of the food chain to the next - a transfer of energy occurs
Pelagic Zone
Food Pyramids
Substratum (soil/rock)
Predators
14. Include saprophytic organisms and organisms of decay
Decomposer
Pelagic Zone
Desert Plants
Photic Zone
15. Cannot synthesize their ow food and must depend upon autotrophs or others in the ecosystem to obtain their food
Sere
Heterotrophs
Physical Environment- Water
Omnivores
16. Animals that consume primary consumers (carnivores)
Tundra Plants
Physical Environment- Water
Secondary Consumers
Nitrogen Cycle 2
17. Vegetation has evolved adaptations for water conservation such as needle shaped leaves
Grassland Animals
Temperate Coniferous Plants
Niche
Photic Zone
18. Adaptations for maintaining their internal osmolarity and conserving water
Commensalism
Osmoregulation
Herbivores
Taiga Plants
19. Group of organisms of the same species living together in a given location
Intraspecific Interactions
Biotic Environment
Ecosystem
Population
20. Composed of populations that are able to exist under the new conditions
Tropical Rain Forest Plants
Desert Biome
Freshwater Biomes
Successive Communities
21. Animals that eat both plants and animals
Other Cycles
Temperate Deciduous Forest Plants
Omnivores
Pioneer Organism
22. Any group of similar organisms that are capable of reproducing
Physical Environment-Temperature
Coimax Vegetatioin
Physical Environment- Water
Species
23. Energy is transferred from the original sources in green plants through a series o organisms with repeated stages of consumption and finally decomposition
Hypotonic
Food Chain
Other Cycles
Food Web
24. Rhododendrons and pines are more suited for growth in acid oil
Biosphere
Nekton
Substratum-pH
Freshwater Biomes
25. Animals eat the plants and synthesize specific animal proteins form the plant proteins. both plants and animals give off wastes and eventually die
Population
Nitrogen Cycle 3
Ecological Succession
Second Law of Thermodynamics
26. Ammonia (NH3) is broken down to release free nitrogen - which returns to the beginning of the denitrifying
Aphotic Zone animals
Abiotic (Physical) Environment
Dentrified
Photic zone
27. Individual unit of an ecological system - but the organism itself is composed of smaller units -organs >tissues >cells >molecules >atoms > subatomic particles
Community
Tundra Plants
Organism
Biotic Community
28. Polar bears - musk oxen - and arctic hens
Producers
Thundra Animals
Benthos
Substratum-pH
29. Chief animal inhabitant is the moose; however - the black bear - wolf - and some birds
Tropical Rain Forest Plants
Taiga Animals
Saprophytes
Carbon Cycle 1
30. Animals that consume green plants (herbivores)
Taiga Biome
Tropical Rain Forest Plants
Primary Consumers
Temperate Deciduous Forest Animals
31. Oceans connect to form one continuous body of water - which controls the earth's temperature by absorbing solar heat
Marine Biomes
Organism
Pyramid of Mass
Hydrosphere
32. The major component of the internal environment of all living things
Physical Environment- Water
Substratum-Humus
Littoral Zone
Food Pyramids
33. Links between oceans and land
Predator-Prey relationship
Marshes
Obligatory
Taiga Biome
34. Determines the nature of plant and animal life in the soil
Desert animals
Coimax Vegetatioin
Food Pyramids
Substratum (soil/rock)
35. Crawling and sessile organsms
Biosphere
Obligatory
Benthos
Food Pyramids
36. The oceans
Lithosphere
Autotrophs
Hydrosphere
Nitrogen cycle 1
37. 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
Lithosphere
Competition Same Niche 2
Temperate Coniferous Forest Biome
Tertiary Consumers
38. Regiong beneatht he photic zone that receives no light
Tropical Rain Forest Animals
Community
Aphotic Zone
Climate and weather
39. 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
Dominant Species
Climate and weather
Environmental Factors
Temperate Deciduous Forest Animals
40. Made into nitrites by chemosynthetic bacteria and then to usable nitrates by nitrifying bacteria
Substratum-Humus
Nitrified
Secondary Consumers
Material Cycles
41. Distinct community in a geographic region
Abiotic (Physical) Environment
Intertidal Zone Population
Symbionts
Biome
42. Animals that consume dead animals
Competition
Temperate Deciduous Forest Plants
Scavengers
Marshes
43. Sunlit layer of the open sea extending to a depth of 250-600ft
Aquatic Biomes
Aphotic Zone
Photic zone
Other Cycles
44. 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
Substratum-Minerals
Tropical Rain Forest Plants
45. 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
Freshwater Biomes
Food Chain
Producers
46. 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 Biome
Species
Osmoregulation
Biotic Community
47. Rock and soil surface
Tundra Plants
Ecology
Lithosphere
Community
48. 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
Nitrogen cycle 1
Desert animals
Tundra Biome
Rootlike holdfasts
49. Region typical of the open seas and can be divided into photic and aphotic zones
Substratum-Humus
Competition Same Niche 3
Thundra Animals
Pelagic Zone
50. 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
Ecosystem
Nitrified
Autotrophs
Carbon Cycle 3