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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. Region typical of the open seas and can be divided into photic and aphotic zones
Pelagic Zone
Biome
Climax Community
Substratum-pH
2. Animals that consume primary consumers (carnivores)
Material Cycles
Secondary Consumers
Aphotic Zone animals
Marshes
3. Active swimmers such as fish - sharks - or whales that feed on plankton and smaller fish
Temperate Deciduous Forest Biome
Desert animals
Biotic Community
Nekton
4. Ammonia (NH3) is broken down to release free nitrogen - which returns to the beginning of the denitrifying
Predator-Prey relationship
Benthos
Scavengers
Dentrified
5. 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
Pyramid of Energy
Material Cycles
Lithosphere
6. Have adaptations enabling them to survive in very cod water - with high pressures - and in complete darkness
Poikilothermic (Cold Blooded)
Ecological Succession
Deep-sea Organisms
Tundra Plants
7. Animals that eat both plants and animals
Carbon Cycle 3
Omnivores
Intertidal Zone Population
Freshwater Biomes
8. Includes climate - temperature - availability of light and water - and the local topology
Food Pyramids
Abiotic (Physical) Environment
Producers
Decomposer
9. Energy is transferred from the original sources in green plants through a series o organisms with repeated stages of consumption and finally decomposition
Food Chain
Ecology
Autotrophs
Commensalism
10. 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
Communities
Littoral Zone
Photic Zone animals
11. Integrated system of species that are dependent upon one another for survival
Temperate Deciduous Forest Animals
Substratum (soil/rock)
Aquatic Biomes
Community
12. Any group of similar organisms that are capable of reproducing
Nitrogen Cycle 4
Species
Nitrogen
Hemeothermic (Warm Blooded)
13. 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
Marshes
Symbionts
Cohesive Force
Pyramid of Mass
14. Jungles characterized by high temperatures and torrential rains -found in Central Africa - Central America - the Amazon basic - and Southeast Asia
Tropical Rain Forest Biome
Food Chain
Pyramid of Numbers
Substratum-texture
15. Vegetation has evolved adaptations for water conservation such as needle shaped leaves
Temperate Coniferous Plants
Nitrogen
Sere
Tundra Plants
16. Rock and soil surface
Lithosphere
Aphotic Zone
Photic Zone
Scavengers
17. Symbiotic relationship from which both organisms derive some benefit
Second Law of Thermodynamics
Temperate Deciduous Forest Animals
Nitrogen Cycle 4
Mutualims
18. 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
Competition
Aphotic Zone
Saprophytes
Food Pyramids
19. Community in an ecological succession is identified by a dominant species
Predators
Sere
Tundra Biome
Nitrogen Cycle 2
20. Lichens and moss
Nature of Biomes
Grassland Animals
Aphotic Zone
Tundra Plants
21. When a parasite benefits at the expense of the host
Substratum (soil/rock)
Ecosystem
Parasitism
Carbon Cycle 1
22. Algae - crabs - crustacea - and many different species of fish
Hydrosphere
Carbon Cycle 1
Substratum-texture
Littoral Zone Populations
23. Trees such as beech - maple - oaks - and willows shed their leaves during cold winters months
Food Pyramids
Temperate Deciduous Forest Plants
Decomposer
Substratum-Humus
24. Body temperature is very close to that of their surroundings -as temperature rises - these organisms become more active
Biotic Environment
Poikilothermic (Cold Blooded)
Mutualims
Photic Zone animals
25. Plants growing on other plants - trees grow closely together; sunlight hardly reaches the forest floor
Intertidal Zone
Epiphytes
Aphotic Zone
Substratum (soil/rock)
26. Chief animal inhabitant is the moose; however - the black bear - wolf - and some birds
Mutualims
Taiga Animals
Intraspecific Interactions
Climax Community
27. Affect the type of vegetation that can be supported
Successive Communities
Substratum-Minerals
Photic Zone
Predator-Prey relationship
28. The stable - living part of the ecosystem in whicih populations exist in balance with each other and with the environment
Climax Community
Substratum (soil/rock)
Desert Plants
Epiphytes
29. The vegetation that becomes dominant and stable after years of evolutiionary development
Material Cycles
Coimax Vegetatioin
Temperate Deciduous Forest Plants
Taiga Plants
30. Composed of populations that are able to exist under the new conditions
Tundra Biome
Successive Communities
Nitrogen Cycle 5
Hypotonic
31. Conserve water actively
Conditions for stability in an Ecosystem
Nekton
Desert Plants
Grassland Animals
32. The chief disruptive force
Species
Poikilothermic (Cold Blooded)
Pioneer Organism
Competition
33. Animals that consume dead animals
Substratum-texture
Grassland Biome
Scavengers
Predators
34. Determined by the same decisive factors-temperatures and rainfall
Freshwater Biomes
Nature of Biomes
Parasitism
Ecology
35. Region on the continental shelf that contains ocean area with depths up to 600 feet and extends several hundred miles from the shores
Marine Biomes
Substratum-Humus
Aphotic Zone
Littoral Zone
36. Encompasses all that is external to the organism and is necessary for its existence
Temperate Deciduous Forest Animals
Nitrogen Cycle 2
Environment
Pyramid of Mass
37. Developed long legs and many are hoofed
Physical Environment-Sunlight
Littoral Zone Populations
Cohesive Force
Grassland Animals
38. Adaptations for maintaining their internal osmolarity and conserving water
Taiga Biome
Epiphytes
Conditions for stability in an Ecosystem
Osmoregulation
39. Must be maintained at an optimal level -organisms have adaptations necessary for protection against extremes
Substratum-pH
Polar Region
Biotic Community
Physical Environment-Temperature
40. Live together in an intimate - often permanent association - which may or may not be beneficial to both participants
Symbionts
Hydrosphere
Nitrified
Photic Zone animals
41. Includes the community and the environment and usually all five kingdoms
Hemeothermic (Warm Blooded)
Ecosystem
Carnivores
Pyramid of Mass
42. 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
Photic Zone animals
Parasitism
Tundra Biome
Rootlike holdfasts
43. In the ocean - the top layer thorugh which light can penetrate - is where all aquatic photosynthetic activity takes place
Tropical Rain Forest Animals
Physical Environment- Water
Herbivores
Photic Zone
44. Have cold winters - warm summers - and moderate rainfall -found in the Northeast and Central-Eastern United States and Central Europe
Deep-sea Organisms
Carbon Cycle 2
Temperate Deciduous Forest Biome
Biosphere
45. 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
Climate and weather
Sere
Omnivores
Pyramid of Energy
46. Only animal life and other heterotrophic life exists
Substratum-texture
Heterotrophs
Aphotic Zone
Littoral Zone
47. One or both organisms can't survive without the other
Obligatory
Desert Biome
Competition Same Niche 2
Polar Region
48. Group of organisms of the same species living together in a given location
Tropical Rain Forest Animals
Climax Community
Population
Temperate Deciduous Forest Plants
49. Nekton and benthos - scavengers - and predators (fiercely competitive)
Desert Biome
Heterotrophs
Cohesive Force
Aphotic Zone animals
50. Animals that only eat other animals -possess pointed teeth and fang-like canine teeth for tearing flesh -have shorter digestive tracts because the easier digestibility of animal food
Carnivores
Dentrified
Nitrogen Cycle 4
Ecological Succession
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