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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. Deer - fox - woodchuck - and squirrel
Intertidal Zone Population
Temperate Deciduous Forest Animals
Producers
Taiga Animals
2. Integrated system of species that are dependent upon one another for survival
Carbon Cycle 3
Community
Secondary Consumers
Organism
3. Animals that consume dead animals
Scavengers
Ecosystem
Biotic Environment
Obligatory
4. Only animal life and other heterotrophic life exists
Dentrified
Obligatory
Hemeothermic (Warm Blooded)
Aphotic Zone
5. Chief animal inhabitant is the moose; however - the black bear - wolf - and some birds
Taiga Animals
Intraspecific Interactions
Lithosphere
Nitrogen Cycle 2
6. Organisms that manufacture their own food
Secondary Consumers
Autotrophs
Intertidal Zone
Producers
7. (living) includes all living things that directly or indirectly influence the life of the organism including the relationships that exist between organisms
Biotic Environment
Aphotic Zone
Temperate Deciduous Forest Biome
Conditions for stability in an Ecosystem
8. Recycle water - oxygen - and phosphorus
Other Cycles
Parasitism
Biosphere
Successive Communities
9. Determines water holding capacity
Obligatory
Substratum-texture
Carbon Cycle 2
Conditions for stability in an Ecosystem
10. An essential component of amino acids and nucleic acids - which are the building blocks of all living things
Substratum (soil/rock)
Community
Marine Biomes
Nitrogen
11. Contains plankton - passively drifting masses of microscopic photosynthetic and heterotrophic organisms - and nekton - and algae
Photic Zone animals
Temperate Coniferous Forest Biome
Coimax Vegetatioin
Predators
12. 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
Obligatory
Competition Same Niche 2
Pyramid of Mass
Sere
13. Determines the nature of plant and animal life in the soil
Substratum (soil/rock)
Biotic Environment
Intraspecific Interactions
Desert animals
14. Animals that consume green plants (herbivores)
Carnivores
Primary Consumers
Predators
Competition
15. 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
Temperate Coniferous Forest Biome
Nitrogen Cycle 4
Competition
Tundra Plants
16. One or both organisms can't survive without the other
Substratum-pH
Obligatory
Nekton
Rootlike holdfasts
17. Material is cycled and recycled betweenn organisms and their environments - passing from inorganic forms to organic forms and then back to the inorganic forms
Marshes
Desert animals
Littoral Zone
Material Cycles
18. 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
Dentrified
Physical Environment- Water
Biotic Community
Grassland Biome
19. Vegetation has evolved adaptations for water conservation such as needle shaped leaves
Rootlike holdfasts
Temperate Coniferous Plants
Nekton
Tundra Plants
20. Body temperature is very close to that of their surroundings -as temperature rises - these organisms become more active
Poikilothermic (Cold Blooded)
Substratum-Humus
Biotic Community
Niche
21. Have adaptations enabling them to survive in very cod water - with high pressures - and in complete darkness
Competition Same Niche 3
Carbon Cycle 2
Deep-sea Organisms
Herbivores
22. Frozen area with no vegetation and terrestrial animals -animals that do inhabit polar regions generally live near the polar oceans
Aphotic Zone animals
Dentrified
Polar Region
Climate and weather
23. Animals that consume only plants or plant foods
Environmental Factors
Herbivores
Marine Biomes
Physical Environment-Temperature
24. 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
Epiphytes
Second Law of Thermodynamics
Aquatic Biomes
Primary Consumers
25. Consists of populations of different plants and animal species interacting with each other in a given environment
Physical Environment- Water
Communities
Symbionts
Predator-Prey relationship
26. The major component of the internal environment of all living things
Omnivores
Physical Environment- Water
Producers
Organism
27. Must be maintained at an optimal level -organisms have adaptations necessary for protection against extremes
Conditions for stability in an Ecosystem
Physical Environment-Temperature
Material Cycles
Desert Plants
28. Any group of similar organisms that are capable of reproducing
Species
Tropical Rain Forest Biome
Substratum-Humus
Second Law of Thermodynamics
29. Live together in an intimate - often permanent association - which may or may not be beneficial to both participants
Secondary Consumers
Symbionts
Aphotic Zone
Desert animals
30. Community in an ecological succession is identified by a dominant species
Poikilothermic (Cold Blooded)
Grassland Animals
Sere
Material Cycles
31. 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 Biome
Biome
Niche
Nekton
32. One that exerts control over the other species that are present
Nitrogen Cycle 3
Dominant Species
Nekton
Biome
33. Live in burrows had few birds and mammals are found except those which have developed adaptations for maintaining constant body temperatures
Carnivores
Taiga Animals
Desert animals
Mutualims
34. The chief disruptive force
Benthos
Material Cycles
Primary Consumers
Competition
35. Made into nitrites by chemosynthetic bacteria and then to usable nitrates by nitrifying bacteria
Nitrified
Nitrogen Cycle 2
Substratum-Minerals
Temperate Coniferous Forest Biome
36. Includes climate - temperature - availability of light and water - and the local topology
Physical Environment- Water
Abiotic (Physical) Environment
Taiga Plants
Primary Consumers
37. Links between oceans and land
Littoral Zone
Climate and weather
Ecosystem
Marshes
38. Include reproduction and protection from predators and destructive weather
Competition
Littoral Zone Populations
Cohesive Force
Intertidal Zone Population
39. One species may be competitively superior to the other and drive the second to extinction
Competition Same Niche
Food Web
Predator-Prey relationship
Organism
40. Autotrophic green plants and chemosynthetic bacteria that use the energy of the sun and simple raw materials to manufacture carbohydrates - proteins - and lipids
Producers
Rootlike holdfasts
Saprophytes
Littoral Zone Populations
41. 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
Substratum-pH
Carbon Cycle 2
Desert Plants
Communities
42. Algae - crabs - crustacea - and many different species of fish
Epiphytes
Littoral Zone Populations
Predator-Prey relationship
Secondary Consumers
43. Nutrients - water - and sunlight limitations aid in maintaining populations at relatively constant levels
Carbon Cycle 3
Grassland Biome
Environmental Factors
Carnivores
44. Region typical of the open seas and can be divided into photic and aphotic zones
Scavengers
Pelagic Zone
Physical Environment-Temperature
Poikilothermic (Cold Blooded)
45. Conserve water actively
Pyramid of Mass
Carbon Cycle 2
Desert Plants
Ecological Succession
46. Regiong beneatht he photic zone that receives no light
Temperate Coniferous Forest Biome
Ecosystem
Aphotic Zone
Taiga Plants
47. Evolved physical mechanisms that allow them to make Use of the heat produced as a consequence of respiratiion
Substratum (soil/rock)
Physical Environment-Sunlight
Epiphytes
Hemeothermic (Warm Blooded)
48. 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
Competition Same Niche 3
Lithosphere
Aquatic Biomes
Competition Same Niche 2
49. Lichens and moss
Secondary Consumers
Environmental Factors
Nekton
Tundra Plants
50. Include saprophytic organisms and organisms of decay
Tundra Biome
Desert Biome
Intertidal Zone Population
Decomposer