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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
Nekton
Producers
Intertidal Zone
Temperate Deciduous Forest Biome
2. Two fates await the ammonia (NH3). some are nitrified or dentrified
Pelagic Zone
Nitrogen Cycle 4
Food Chain
Nitrogen Cycle 5
3. Developed long legs and many are hoofed
Temperate Deciduous Forest Animals
Grassland Animals
Competition Same Niche 3
Community
4. Crawling and sessile organsms
Population
Food Chain
Marshes
Benthos
5. 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
Photic zone
Obligatory
Second Law of Thermodynamics
Polar Region
6. Organisms that manufacture their own food
Commensalism
Autotrophs
Temperate Coniferous Plants
Substratum (soil/rock)
7. Live together in an intimate - often permanent association - which may or may not be beneficial to both participants
Decomposer
Rootlike holdfasts
Hypotonic
Symbionts
8. Nutrients - water - and sunlight limitations aid in maintaining populations at relatively constant levels
Environmental Factors
Biotic Community
Obligatory
Herbivores
9. Animals that eat both plants and animals
Nitrogen Cycle 4
Polar Region
Omnivores
Tropical Rain Forest Biome
10. Algae - crabs - crustacea - and many different species of fish
Cohesive Force
Desert Plants
Marine Biomes
Littoral Zone Populations
11. 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
Intraspecific Interactions
Physical Environment-Sunlight
Substratum-pH
Food Web
12. Region exposed to low tides that undergoes variations in temperature and periods of dryness
Temperate Deciduous Forest Animals
Intertidal Zone
Aphotic Zone
Littoral Zone
13. Only animal life and other heterotrophic life exists
Aphotic Zone
Substratum-Minerals
Secondary Consumers
Food Pyramids
14. Polar bears - musk oxen - and arctic hens
Successive Communities
Thundra Animals
Temperate Deciduous Forest Plants
Decomposer
15. The study of interactions between organisms and their environment
Ecology
Epiphytes
Hydrosphere
Marine Biomes
16. Ammonia (NH3) is broken down to release free nitrogen - which returns to the beginning of the denitrifying
Primary Consumers
Competition Same Niche 2
Parasitism
Dentrified
17. Live in burrows had few birds and mammals are found except those which have developed adaptations for maintaining constant body temperatures
Grassland Biome
Desert animals
Food Web
Secondary Consumers
18. 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
Aphotic Zone
Intraspecific Interactions
Climate and weather
Environmental Factors
19. Contains plankton - passively drifting masses of microscopic photosynthetic and heterotrophic organisms - and nekton - and algae
Obligatory
Sere
Photic Zone animals
Material Cycles
20. Regiong beneatht he photic zone that receives no light
Temperate Coniferous Forest Biome
Aphotic Zone
Nitrogen cycle 1
Successive Communities
21. Community in an ecological succession is identified by a dominant species
Successive Communities
Marshes
Rootlike holdfasts
Sere
22. Frozen area with no vegetation and terrestrial animals -animals that do inhabit polar regions generally live near the polar oceans
Decomposer
Biotic Environment
Polar Region
Aphotic Zone
23. Determines water holding capacity
Heterotrophs
Substratum-Minerals
Predators
Substratum-texture
24. Oceans connect to form one continuous body of water - which controls the earth's temperature by absorbing solar heat
Desert Plants
Marine Biomes
Osmoregulation
Environmental Factors
25. Trees such as beech - maple - oaks - and willows shed their leaves during cold winters months
Physical Environment-Sunlight
Lithosphere
Aquatic Biomes
Temperate Deciduous Forest Plants
26. Any group of similar organisms that are capable of reproducing
Pioneer Organism
Nitrogen
Species
Environment
27. The chief disruptive force
Autotrophs
Competition
Population
Decomposer
28. Evolved physical mechanisms that allow them to make Use of the heat produced as a consequence of respiratiion
Other Cycles
Hemeothermic (Warm Blooded)
Mutualims
Substratum-pH
29. Rhododendrons and pines are more suited for growth in acid oil
Substratum-pH
Food Chain
Abiotic (Physical) Environment
Nature of Biomes
30. Integrated system of species that are dependent upon one another for survival
Community
Intertidal Zone
Temperate Deciduous Forest Animals
Carbon Cycle 2
31. 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
Parasitism
Climate and weather
Temperate Coniferous Forest Biome
Ecosystem
32. One that exerts control over the other species that are present
Intraspecific Interactions
Dominant Species
Intertidal Zone
Obligatory
33. Deer - fox - woodchuck - and squirrel
Osmoregulation
Thundra Animals
Temperate Deciduous Forest Animals
Climate and weather
34. Individual unit of an ecological system - but the organism itself is composed of smaller units -organs >tissues >cells >molecules >atoms > subatomic particles
Hydrosphere
Organism
Competition Same Niche 2
Carbon Cycle 1
35. 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
Poikilothermic (Cold Blooded)
Taiga Biome
Substratum-Humus
Tropical Rain Forest Animals
36. Includes climate - temperature - availability of light and water - and the local topology
Ecological Succession
Predator-Prey relationship
Abiotic (Physical) Environment
Symbionts
37. Energy is transferred from the original sources in green plants through a series o organisms with repeated stages of consumption and finally decomposition
Competition Same Niche 3
Food Chain
Photic zone
Rootlike holdfasts
38. Affect the type of vegetation that can be supported
Substratum-Minerals
Substratum (soil/rock)
Sere
Environment
39. Animals that consume primary consumers (carnivores)
Climate and weather
Deep-sea Organisms
Secondary Consumers
Tertiary Consumers
40. Determines the nature of plant and animal life in the soil
Ecological Succession
Food Pyramids
Substratum (soil/rock)
Commensalism
41. Active swimmers such as fish - sharks - or whales that feed on plankton and smaller fish
Environment
Nekton
Predators
Substratum (soil/rock)
42. Encompasses all that is external to the organism and is necessary for its existence
Epiphytes
Secondary Consumers
Environment
Substratum (soil/rock)
43. Plants growing on other plants - trees grow closely together; sunlight hardly reaches the forest floor
Epiphytes
Pyramid of Numbers
Dentrified
Tundra Biome
44. Symbiotic relationship from which both organisms derive some benefit
Mutualims
Aphotic Zone
Biotic Community
Producers
45. 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
Biome
Intraspecific Interactions
Carnivores
Rootlike holdfasts
46. Jungles characterized by high temperatures and torrential rains -found in Central Africa - Central America - the Amazon basic - and Southeast Asia
Food Pyramids
Predator-Prey relationship
Intertidal Zone
Tropical Rain Forest Biome
47. 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
Tundra Plants
Temperate Deciduous Forest Biome
Littoral Zone
48. When one organism is benefited by the association and the other is not affected
Commensalism
Tundra Plants
Carbon Cycle 3
Ecological Succession
49. In the ocean - the top layer thorugh which light can penetrate - is where all aquatic photosynthetic activity takes place
Photic Zone
Primary Consumers
Pyramid of Numbers
Temperate Coniferous Forest Biome
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
Producers
Nature of Biomes
Carbon Cycle 3
Physical Environment- Water