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Test your basic knowledge |
PCAT Biology Ecology
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Subjects
:
pcat
,
biology
Instructions:
Answer 50 questions in 15 minutes.
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.
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. Include those protists and fungi that decompose dead organic matter externally and absorb the nutrients - they consistitute a vital link in the cycling of material within the ecosystem
Saprophytes
Taiga Plants
Benthos
Substratum-Humus
2. Regiong beneatht he photic zone that receives no light
Pyramid of Mass
Aphotic Zone
Saprophytes
Desert Biome
3. Live in burrows had few birds and mammals are found except those which have developed adaptations for maintaining constant body temperatures
Competition
Ecology
Competition Same Niche 2
Desert animals
4. 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
Second Law of Thermodynamics
Photic Zone
Nitrogen
Rootlike holdfasts
5. Consists of populations of different plants and animal species interacting with each other in a given environment
Population
Climax Community
Second Law of Thermodynamics
Communities
6. Animals that consume only plants or plant foods
Food Pyramids
Herbivores
Environmental Factors
Symbionts
7. Lichens and moss
Substratum-Humus
Food Chain
Tundra Plants
Rootlike holdfasts
8. Animals that consume dead animals
Scavengers
Predator-Prey relationship
Substratum (soil/rock)
Competition
9. 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
Grassland Animals
Climate and weather
Autotrophs
10. Jungles characterized by high temperatures and torrential rains -found in Central Africa - Central America - the Amazon basic - and Southeast Asia
Tropical Rain Forest Biome
Carbon Cycle 1
Intertidal Zone
Biome
11. When one organism is benefited by the association and the other is not affected
Commensalism
Grassland Biome
Coimax Vegetatioin
Taiga Plants
12. Algae - sponges - clams - snails - sea urchins - starfish - and crabs
Competition
Intertidal Zone Population
Photic Zone
Nature of Biomes
13. Forest floors contain moss and lichens
Taiga Plants
Food Pyramids
Physical Environment-Temperature
Climate and weather
14. Nekton and benthos - scavengers - and predators (fiercely competitive)
Aphotic Zone animals
Predator-Prey relationship
Pelagic Zone
Pyramid of Energy
15. In the ocean - the top layer thorugh which light can penetrate - is where all aquatic photosynthetic activity takes place
Tundra Plants
Substratum (soil/rock)
Aphotic Zone
Photic Zone
16. One that exerts control over the other species that are present
Dominant Species
Rootlike holdfasts
Climate and weather
Temperate Coniferous Plants
17. Frozen area with no vegetation and terrestrial animals -animals that do inhabit polar regions generally live near the polar oceans
Polar Region
Symbionts
Rootlike holdfasts
Temperate Deciduous Forest Biome
18. Determines the nature of plant and animal life in the soil
Nitrogen cycle 1
Tundra Biome
Competition Same Niche 2
Substratum (soil/rock)
19. Animals that eat both plants and animals
Cohesive Force
Aphotic Zone
Photic zone
Omnivores
20. Trees such as beech - maple - oaks - and willows shed their leaves during cold winters months
Grassland Biome
Temperate Deciduous Forest Plants
Tundra Plants
Intertidal Zone Population
21. The stable - living part of the ecosystem in whicih populations exist in balance with each other and with the environment
Climax Community
Marine Biomes
Polar Region
Heterotrophs
22. Any group of similar organisms that are capable of reproducing
Species
Communities
Physical Environment- Water
Photic Zone
23. Active swimmers such as fish - sharks - or whales that feed on plankton and smaller fish
Mutualims
Carnivores
Physical Environment- Water
Nekton
24. Determine by the amount of decaying plant and animal life in the soil
Marshes
Carbon Cycle 3
Primary Consumers
Substratum-Humus
25. The chief disruptive force
Competition
Desert Plants
Temperate Deciduous Forest Plants
Aphotic Zone animals
26. Integrated system of species that are dependent upon one another for survival
Competition Same Niche
Community
Benthos
Poikilothermic (Cold Blooded)
27. Region on the continental shelf that contains ocean area with depths up to 600 feet and extends several hundred miles from the shores
Scavengers
Aphotic Zone animals
Littoral Zone
Biotic Community
28. Includes climate - temperature - availability of light and water - and the local topology
Physical Environment-Sunlight
Cohesive Force
Abiotic (Physical) Environment
Food Chain
29. Encompasses all that is external to the organism and is necessary for its existence
Pyramid of Energy
Taiga Animals
Niche
Environment
30. 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 Plants
Producers
Tundra Biome
Desert animals
31. The orderly process by which one biotic community replaces or succeeds another until a climax community is established
Ecological Succession
Carbon Cycle 2
Biome
Nitrified
32. Food chain is not a simple linear chain but an intricate web
Food Web
Nature of Biomes
Communities
Desert Biome
33. Rhododendrons and pines are more suited for growth in acid oil
Competition Same Niche
Taiga Plants
Substratum-pH
Commensalism
34. The major component of the internal environment of all living things
Pyramid of Mass
Physical Environment- Water
Organism
Ecology
35. The oceans
Temperate Deciduous Forest Biome
Photic zone
Nitrogen Cycle 4
Hydrosphere
36. Contains plankton - passively drifting masses of microscopic photosynthetic and heterotrophic organisms - and nekton - and algae
Omnivores
Photic Zone animals
Biosphere
Intertidal Zone
37. Links between oceans and land
Conditions for stability in an Ecosystem
Ecosystem
Littoral Zone Populations
Marshes
38. The study of interactions between organisms and their environment
Ecology
Predator-Prey relationship
Grassland Biome
Biotic Environment
39. Group of organisms of the same species living together in a given location
Autotrophs
Population
Successive Communities
Aquatic Biomes
40. When a parasite benefits at the expense of the host
Heterotrophs
Parasitism
Substratum-pH
Biome
41. 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
Food Pyramids
Tundra Plants
Carbon Cycle 1
Substratum (soil/rock)
42. Animals that feed on secondary consumer
Tundra Plants
Producers
Carbon Cycle 2
Tertiary Consumers
43. Used to include only the population and not their physical environment
Littoral Zone Populations
Physical Environment-Temperature
Biotic Community
Primary Consumers
44. Region typical of the open seas and can be divided into photic and aphotic zones
Ecosystem
Pelagic Zone
Autotrophs
Temperate Deciduous Forest Plants
45. Two fates await the ammonia (NH3). some are nitrified or dentrified
Physical Environment-Temperature
Nitrogen Cycle 5
Temperate Deciduous Forest Animals
Biosphere
46. Animals that consume primary consumers (carnivores)
Secondary Consumers
Tropical Rain Forest Biome
Photic Zone
Nitrogen
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
Photic zone
Temperate Coniferous Plants
Nitrogen cycle 1
48. Vegetation such as vines and eppiphytes
Tropical Rain Forest Plants
Producers
Pelagic Zone
Climax Community
49. Composed of populations that are able to exist under the new conditions
Obligatory
Other Cycles
Successive Communities
Saprophytes
50. Crawling and sessile organsms
Benthos
Heterotrophs
Environment
Desert Biome
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