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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. Chief animal inhabitant is the moose; however - the black bear - wolf - and some birds
Nitrogen Cycle 3
Species
Taiga Animals
Littoral Zone
2. Sunlit layer of the open sea extending to a depth of 250-600ft
Obligatory
Hydrosphere
Photic zone
Grassland Animals
3. The study of interactions between organisms and their environment
Ecology
Mutualims
Heterotrophs
Environmental Factors
4. Used to include only the population and not their physical environment
Deep-sea Organisms
Organism
Biotic Community
Cohesive Force
5. Encompasses all that is external to the organism and is necessary for its existence
Environment
Aphotic Zone
Freshwater Biomes
Epiphytes
6. The nitrogen locked up in the wastes and dead tissues is released by the action of the bacteria of decay - which convert the proteins into ammonia
Temperate Coniferous Forest Biome
Grassland Animals
Nitrogen Cycle 4
Communities
7. Distinct community in a geographic region
Biome
Benthos
Producers
Omnivores
8. Animals that eat both plants and animals
Hydrosphere
Predators
Omnivores
Niche
9. Evolve toward a balance in which the predator is a regulatory influence on th prey but not a threat to its survival
Taiga Animals
Nekton
Predator-Prey relationship
Predators
10. First to resettle a virgin area
Hemeothermic (Warm Blooded)
Pioneer Organism
Deep-sea Organisms
Mutualims
11. Vegetation has evolved adaptations for water conservation such as needle shaped leaves
Niche
Temperate Coniferous Plants
Biotic Community
Hydrosphere
12. When a parasite benefits at the expense of the host
Conditions for stability in an Ecosystem
Temperate Deciduous Forest Biome
Parasitism
Dentrified
13. Contains plankton - passively drifting masses of microscopic photosynthetic and heterotrophic organisms - and nekton - and algae
Lithosphere
Pelagic Zone
Photic Zone animals
Littoral Zone
14. One species may be competitively superior to the other and drive the second to extinction
Poikilothermic (Cold Blooded)
Nitrogen Cycle 2
Aphotic Zone animals
Competition Same Niche
15. Determine by the amount of decaying plant and animal life in the soil
Producers
Biome
Substratum-Humus
Carbon Cycle 3
16. The vegetation that becomes dominant and stable after years of evolutiionary development
Coimax Vegetatioin
Commensalism
Substratum-pH
Physical Environment- Water
17. Two species may rapidly evolve in divergent directions under the strong selection pressure resulting from intense competition. thus - the two species would rapidly evolve greater differences in their niches
Nitrogen cycle 1
Competition Same Niche 3
Photic zone
Symbionts
18. Animals that consume primary consumers (carnivores)
Aphotic Zone
Secondary Consumers
Producers
Competition Same Niche 2
19. Region on the continental shelf that contains ocean area with depths up to 600 feet and extends several hundred miles from the shores
Scavengers
Temperate Deciduous Forest Plants
Carnivores
Littoral Zone
20. Nekton and benthos - scavengers - and predators (fiercely competitive)
Predators
Aphotic Zone animals
Biosphere
Hemeothermic (Warm Blooded)
21. Include reproduction and protection from predators and destructive weather
Pyramid of Numbers
Ecology
Cohesive Force
Scavengers
22. Elemental nitrogen is chemically inert and cannot be used by most organisms. Lightning and nitrogen-fixing bacteria in the roots of legumes change the nitrogen into the usable - soluble nitrates
Producers
Nitrogen cycle 1
Second Law of Thermodynamics
Temperate Deciduous Forest Animals
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
Intraspecific Interactions
Freshwater Biomes
Temperate Deciduous Forest Plants
Ecology
24. Forest floors contain moss and lichens
Osmoregulation
Ecological Succession
Taiga Plants
Competition Same Niche 2
25. Consumer organisms that are higher in hte food chain are usually larger and heavier than those further down
Predator-Prey relationship
Substratum-pH
Producers
Pyramid of Numbers
26. Includes climate - temperature - availability of light and water - and the local topology
Biosphere
Desert Plants
Carnivores
Abiotic (Physical) Environment
27. Determined by the same decisive factors-temperatures and rainfall
Nature of Biomes
Freshwater Biomes
Substratum-pH
Organism
28. 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
Substratum-pH
Climate and weather
Hypotonic
29. Oceans connect to form one continuous body of water - which controls the earth's temperature by absorbing solar heat
Poikilothermic (Cold Blooded)
Mutualims
Physical Environment- Water
Marine Biomes
30. Animals eat the plants and synthesize specific animal proteins form the plant proteins. both plants and animals give off wastes and eventually die
Desert Plants
Organism
Nitrogen Cycle 3
Hemeothermic (Warm Blooded)
31. Regiong beneatht he photic zone that receives no light
Benthos
Aphotic Zone
Commensalism
Hydrosphere
32. Algae - crabs - crustacea - and many different species of fish
Littoral Zone Populations
Food Web
Freshwater Biomes
Taiga Biome
33. 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
Taiga Biome
Physical Environment- Water
Rootlike holdfasts
Substratum (soil/rock)
34. 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
Dominant Species
Coimax Vegetatioin
Niche
Environment
35. 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
Scavengers
Tundra Plants
Carbon Cycle 1
Deep-sea Organisms
36. Includes all portions of the planet that support life -the atmosphere - the lithosphere - and the hydrosphere
Second Law of Thermodynamics
Tertiary Consumers
Thundra Animals
Biosphere
37. Determines the nature of plant and animal life in the soil
Substratum-Minerals
Food Web
Substratum (soil/rock)
Temperate Deciduous Forest Plants
38. 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
Pelagic Zone
Mutualims
Heterotrophs
39. Have cold winters - warm summers - and moderate rainfall -found in the Northeast and Central-Eastern United States and Central Europe
Mutualims
Ecology
Temperate Deciduous Forest Biome
Environment
40. Rhododendrons and pines are more suited for growth in acid oil
Cohesive Force
Intraspecific Interactions
Physical Environment-Temperature
Substratum-pH
41. Conserve water actively
Environment
Desert Plants
Hypotonic
Competition
42. Recycle water - oxygen - and phosphorus
Marine Biomes
Climax Community
Niche
Other Cycles
43. Animals that consume only plants or plant foods
Predator-Prey relationship
Freshwater Biomes
Nitrogen
Herbivores
44. Evolved physical mechanisms that allow them to make Use of the heat produced as a consequence of respiratiion
Temperate Deciduous Forest Animals
Littoral Zone
Hemeothermic (Warm Blooded)
Primary Consumers
45. Include saprophytic organisms and organisms of decay
Taiga Plants
Decomposer
Producers
Nitrogen
46. 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
Hypotonic
Biosphere
Intertidal Zone
Organism
47. One or both organisms can't survive without the other
Obligatory
Competition
Nekton
Nature of Biomes
48. Links between oceans and land
Marshes
Marine Biomes
Competition Same Niche
Hypotonic
49. 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
Autotrophs
Commensalism
Ecology
Temperate Coniferous Forest Biome
50. Crawling and sessile organsms
Benthos
Hypotonic
Dominant Species
Pioneer Organism