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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. Live together in an intimate - often permanent association - which may or may not be beneficial to both participants
Symbionts
Intertidal Zone Population
Predator-Prey relationship
Benthos
2. 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
Intertidal Zone Population
Osmoregulation
Temperate Coniferous Forest Biome
3. Evolve toward a balance in which the predator is a regulatory influence on th prey but not a threat to its survival
Desert Plants
Grassland Animals
Predator-Prey relationship
Epiphytes
4. Characterized by low rainfall - although considerably more than the desert biomes receive -provide no shelter for herbivorous mammals from carnivorous predators -ex: East of the Rockies - steppes of the Ukraine - and the pampas of Argentina
Biotic Environment
Grassland Biome
Desert Biome
Freshwater Biomes
5. Vegetation such as vines and eppiphytes
Abiotic (Physical) Environment
Temperate Coniferous Plants
Epiphytes
Tropical Rain Forest Plants
6. The major component of the internal environment of all living things
Physical Environment- Water
Autotrophs
Pyramid of Energy
Competition
7. Include saprophytic organisms and organisms of decay
Decomposer
Substratum-pH
Mutualims
Poikilothermic (Cold Blooded)
8. Made into nitrites by chemosynthetic bacteria and then to usable nitrates by nitrifying bacteria
Secondary Consumers
Freshwater Biomes
Nitrified
Competition Same Niche
9. Jungles characterized by high temperatures and torrential rains -found in Central Africa - Central America - the Amazon basic - and Southeast Asia
Tropical Rain Forest Biome
Predator-Prey relationship
Herbivores
Biotic Environment
10. Cannot synthesize their ow food and must depend upon autotrophs or others in the ecosystem to obtain their food
Thundra Animals
Pyramid of Mass
Heterotrophs
Tropical Rain Forest Plants
11. Rivers - lakes - ponds - and marshes
Dentrified
Freshwater Biomes
Autotrophs
Ecosystem
12. Have cold winters - warm summers - and moderate rainfall -found in the Northeast and Central-Eastern United States and Central Europe
Lithosphere
Producers
Temperate Deciduous Forest Biome
Secondary Consumers
13. Algae - crabs - crustacea - and many different species of fish
Littoral Zone Populations
Benthos
Rootlike holdfasts
Biotic Environment
14. Any group of similar organisms that are capable of reproducing
Scavengers
Omnivores
Species
Tropical Rain Forest Plants
15. Animals eat the plants and synthesize specific animal proteins form the plant proteins. both plants and animals give off wastes and eventually die
Dominant Species
Nitrogen Cycle 3
Littoral Zone
Aphotic Zone
16. 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
Carbon Cycle 1
Secondary Consumers
Tertiary Consumers
Nitrogen
17. The ultimate source of energy for all organisms
Biosphere
Physical Environment-Sunlight
Littoral Zone Populations
Tundra Plants
18. The study of interactions between organisms and their environment
Environmental Factors
Tundra Plants
Aquatic Biomes
Ecology
19. Used to include only the population and not their physical environment
Substratum-texture
Coimax Vegetatioin
Substratum (soil/rock)
Biotic Community
20. Contains plankton - passively drifting masses of microscopic photosynthetic and heterotrophic organisms - and nekton - and algae
Intertidal Zone
Aphotic Zone
Physical Environment- Water
Photic Zone animals
21. Region exposed to low tides that undergoes variations in temperature and periods of dryness
Niche
Aphotic Zone animals
Intertidal Zone
Food Pyramids
22. Animals that consume dead animals
Littoral Zone
Predators
Scavengers
Tropical Rain Forest Animals
23. Lichens and moss
Tropical Rain Forest Plants
Biotic Community
Pyramid of Numbers
Tundra Plants
24. Material is cycled and recycled betweenn organisms and their environments - passing from inorganic forms to organic forms and then back to the inorganic forms
Material Cycles
Ecosystem
Substratum (soil/rock)
Decomposer
25. Body temperature is very close to that of their surroundings -as temperature rises - these organisms become more active
Poikilothermic (Cold Blooded)
Taiga Animals
Physical Environment-Temperature
Temperate Coniferous Plants
26. Determines water holding capacity
Carnivores
Marshes
Substratum-texture
Herbivores
27. First to resettle a virgin area
Nekton
Littoral Zone Populations
Pyramid of Mass
Pioneer Organism
28. Because organisms at the upper levels of the food chain derive their food energy from organisms at lower levels - and because energy is lost from one level to the next - each level can support a successively smaller biomass
Pyramid of Mass
Photic zone
Biotic Environment
Communities
29. Includes all portions of the planet that support life -the atmosphere - the lithosphere - and the hydrosphere
Second Law of Thermodynamics
Abiotic (Physical) Environment
Biosphere
Nitrified
30. Animals eat plants and use the digested nutrients to form carbohydrates - fats - and proteins characteristic of the species. a part of these organic compounds is used as fuel in respiration in plants and animals
Carbon Cycle 2
Grassland Biome
Food Pyramids
Tertiary Consumers
31. An essential component of amino acids and nucleic acids - which are the building blocks of all living things
Herbivores
Nitrogen
Carnivores
Temperate Deciduous Forest Biome
32. Frozen area with no vegetation and terrestrial animals -animals that do inhabit polar regions generally live near the polar oceans
Polar Region
Food Web
Substratum-texture
Parasitism
33. Rock and soil surface
Population
Lithosphere
Predator-Prey relationship
Littoral Zone Populations
34. (living) includes all living things that directly or indirectly influence the life of the organism including the relationships that exist between organisms
Biotic Environment
Scavengers
Material Cycles
Benthos
35. Individual unit of an ecological system - but the organism itself is composed of smaller units -organs >tissues >cells >molecules >atoms > subatomic particles
Hypotonic
Organism
Temperate Deciduous Forest Plants
Ecosystem
36. Only animal life and other heterotrophic life exists
Aphotic Zone
Organism
Species
Marine Biomes
37. 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
Thundra Animals
Competition Same Niche
Littoral Zone Populations
38. In the ocean - the top layer thorugh which light can penetrate - is where all aquatic photosynthetic activity takes place
Carbon Cycle 1
Aphotic Zone
Carbon Cycle 3
Photic Zone
39. 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
Environment
Biosphere
Physical Environment-Temperature
Taiga Biome
40. The vegetation that becomes dominant and stable after years of evolutiionary development
Intertidal Zone Population
Nitrogen Cycle 5
Coimax Vegetatioin
Temperate Coniferous Forest Biome
41. Includes the community and the environment and usually all five kingdoms
Organism
Omnivores
Physical Environment- Water
Ecosystem
42. Region typical of the open seas and can be divided into photic and aphotic zones
Desert Plants
Pelagic Zone
Biotic Community
Carbon Cycle 3
43. Links between oceans and land
Marshes
Obligatory
Tundra Biome
Osmoregulation
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
Photic zone
Intraspecific Interactions
Symbionts
Saprophytes
45. Free-living organisms that feed on other living organisms
Littoral Zone Populations
Predators
Substratum-Minerals
Environmental Factors
46. Includes climate - temperature - availability of light and water - and the local topology
Communities
Abiotic (Physical) Environment
Nitrogen
Commensalism
47. 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
Aquatic Biomes
Carbon Cycle 2
Hydrosphere
Secondary Consumers
48. Adaptations for maintaining their internal osmolarity and conserving water
Scavengers
Desert Biome
Osmoregulation
Taiga Biome
49. Distinct community in a geographic region
Nekton
Environment
Intertidal Zone Population
Biome
50. Food chain is not a simple linear chain but an intricate web
Polar Region
Aphotic Zone animals
Littoral Zone
Food Web