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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. One or both organisms can't survive without the other
Substratum (soil/rock)
Obligatory
Temperate Deciduous Forest Animals
Nekton
2. Links between oceans and land
Polar Region
Marshes
Commensalism
Environment
3. Must be maintained at an optimal level -organisms have adaptations necessary for protection against extremes
Substratum-texture
Food Pyramids
Carbon Cycle 3
Physical Environment-Temperature
4. Two fates await the ammonia (NH3). some are nitrified or dentrified
Nitrogen Cycle 5
Nature of Biomes
Competition Same Niche 2
Rootlike holdfasts
5. Ammonia (NH3) is broken down to release free nitrogen - which returns to the beginning of the denitrifying
Deep-sea Organisms
Taiga Plants
Substratum (soil/rock)
Dentrified
6. Composed of populations that are able to exist under the new conditions
Ecology
Niche
Hypotonic
Successive Communities
7. Have cold winters - warm summers - and moderate rainfall -found in the Northeast and Central-Eastern United States and Central Europe
Temperate Deciduous Forest Biome
Food Web
Substratum-Humus
Species
8. Include reproduction and protection from predators and destructive weather
Nitrogen cycle 1
Cohesive Force
Food Web
Polar Region
9. Community in an ecological succession is identified by a dominant species
Carbon Cycle 3
Taiga Biome
Desert animals
Sere
10. Each member of a food chain uses some of the energy it obtains from its food for its own metabolism and loses some additional energy in the form of heat
Dominant Species
Pyramid of Energy
Tundra Plants
Deep-sea Organisms
11. Animals that consume primary consumers (carnivores)
Substratum-texture
Taiga Biome
Aphotic Zone
Secondary Consumers
12. Plants growing on other plants - trees grow closely together; sunlight hardly reaches the forest floor
Epiphytes
Cohesive Force
Taiga Plants
Competition Same Niche 3
13. Polar bears - musk oxen - and arctic hens
Nitrogen
Thundra Animals
Population
Aphotic Zone
14. When a parasite benefits at the expense of the host
Parasitism
Successive Communities
Mutualims
Tertiary Consumers
15. 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
Nitrogen cycle 1
Obligatory
Intraspecific Interactions
16. 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
Commensalism
Carbon Cycle 3
Aphotic Zone animals
Desert Plants
17. 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
Aphotic Zone
Tropical Rain Forest Plants
Saprophytes
Tundra Plants
18. 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
Photic Zone animals
Aphotic Zone
Nitrogen Cycle 4
Commensalism
19. Consists of populations of different plants and animal species interacting with each other in a given environment
Marine Biomes
Predator-Prey relationship
Photic zone
Communities
20. Animals that consume only plants or plant foods
Community
Aphotic Zone
Herbivores
Climate and weather
21. Freshwater Biomes vs. Saltwater 2: In rivers and streams - strong swift currents exist - and thus fish that have developed strong muscles and plants with _____________ have survived
Aquatic Biomes
Intraspecific Interactions
Rootlike holdfasts
Pyramid of Energy
22. Organisms that manufacture their own food
Littoral Zone
Littoral Zone Populations
Nitrogen Cycle 5
Autotrophs
23. The orderly process by which one biotic community replaces or succeeds another until a climax community is established
Ecological Succession
Cohesive Force
Substratum (soil/rock)
Desert animals
24. Determined by the same decisive factors-temperatures and rainfall
Hydrosphere
Nature of Biomes
Pelagic Zone
Food Pyramids
25. Affect the type of vegetation that can be supported
Substratum-Minerals
Nitrogen Cycle 5
Cohesive Force
Physical Environment- Water
26. Active swimmers such as fish - sharks - or whales that feed on plankton and smaller fish
Climax Community
Littoral Zone
Nekton
Aphotic Zone
27. Animals eat the plants and synthesize specific animal proteins form the plant proteins. both plants and animals give off wastes and eventually die
Substratum-pH
Pelagic Zone
Nitrogen Cycle 3
Material Cycles
28. Receive less than ten inches of rain each year; the rain is concentrated within a few heavy cloudbursts -ex: Sahara in Africa and Gobi in Asia
Nitrogen
Desert Biome
Aphotic Zone
Substratum (soil/rock)
29. Developed long legs and many are hoofed
Organism
Tundra Plants
Grassland Animals
Marine Biomes
30. Forest floors contain moss and lichens
Competition
Taiga Plants
Benthos
Littoral Zone Populations
31. Rhododendrons and pines are more suited for growth in acid oil
Competition
Substratum-pH
Climax Community
Sere
32. Crawling and sessile organsms
Temperate Deciduous Forest Biome
Lithosphere
Niche
Benthos
33. Free-living organisms that feed on other living organisms
Intertidal Zone
Predators
Secondary Consumers
Substratum-Humus
34. Lichens and moss
Tundra Plants
Littoral Zone Populations
Pyramid of Energy
Nitrogen Cycle 2
35. Evolved physical mechanisms that allow them to make Use of the heat produced as a consequence of respiratiion
Carbon Cycle 3
Hemeothermic (Warm Blooded)
Littoral Zone Populations
Nitrogen Cycle 2
36. Live in burrows had few birds and mammals are found except those which have developed adaptations for maintaining constant body temperatures
Predators
Desert animals
Substratum-pH
Biotic Community
37. Includes the community and the environment and usually all five kingdoms
Taiga Biome
Ecosystem
Food Chain
Symbionts
38. Deer - fox - woodchuck - and squirrel
Heterotrophs
Temperate Deciduous Forest Animals
Food Web
Symbionts
39. Cannot synthesize their ow food and must depend upon autotrophs or others in the ecosystem to obtain their food
Carbon Cycle 3
Environment
Heterotrophs
Conditions for stability in an Ecosystem
40. Nutrients - water - and sunlight limitations aid in maintaining populations at relatively constant levels
Niche
Desert Plants
Environmental Factors
Littoral Zone
41. The study of interactions between organisms and their environment
Intraspecific Interactions
Intertidal Zone
Competition Same Niche
Ecology
42. Encompasses all that is external to the organism and is necessary for its existence
Carbon Cycle 1
Dominant Species
Nitrogen Cycle 5
Environment
43. Includes all portions of the planet that support life -the atmosphere - the lithosphere - and the hydrosphere
Tertiary Consumers
Pelagic Zone
Autotrophs
Biosphere
44. Sunlit layer of the open sea extending to a depth of 250-600ft
Grassland Animals
Taiga Plants
Photic zone
Nitrogen Cycle 3
45. Determines water holding capacity
Substratum-texture
Carbon Cycle 1
Predator-Prey relationship
Ecology
46. 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
Freshwater Biomes
Temperate Coniferous Forest Biome
Desert Plants
Nitrogen Cycle 3
47. Regiong beneatht he photic zone that receives no light
Taiga Plants
Sere
Aphotic Zone
Communities
48. Algae - sponges - clams - snails - sea urchins - starfish - and crabs
Intertidal Zone Population
Community
Food Chain
Benthos
49. Animals that eat both plants and animals
Osmoregulation
Omnivores
Symbionts
Climax Community
50. Have adaptations enabling them to survive in very cod water - with high pressures - and in complete darkness
Benthos
Saprophytes
Deep-sea Organisms
Nature of Biomes
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