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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. 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
Marine Biomes
Epiphytes
Taiga Biome
Tundra Plants
2. One or both organisms can't survive without the other
Nitrogen Cycle 4
Predator-Prey relationship
Physical Environment- Water
Obligatory
3. Vegetation has evolved adaptations for water conservation such as needle shaped leaves
Predators
Temperate Coniferous Plants
Symbionts
Tropical Rain Forest Plants
4. Sunlit layer of the open sea extending to a depth of 250-600ft
Carbon Cycle 2
Photic zone
Food Pyramids
Aphotic Zone animals
5. Animals that eat both plants and animals
Omnivores
Communities
Tropical Rain Forest Animals
Grassland Biome
6. Regiong beneatht he photic zone that receives no light
Hemeothermic (Warm Blooded)
Aphotic Zone
Temperate Coniferous Forest Biome
Grassland Animals
7. 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
Carbon Cycle 3
Nitrogen cycle 1
Dentrified
Pelagic Zone
8. 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
Carbon Cycle 1
Carbon Cycle 3
Freshwater Biomes
9. 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
Community
Pyramid of Mass
Grassland Animals
Competition Same Niche 3
10. The study of interactions between organisms and their environment
Decomposer
Pelagic Zone
Temperate Coniferous Plants
Ecology
11. 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
Grassland Biome
Tundra Plants
Abiotic (Physical) Environment
Decomposer
12. Developed long legs and many are hoofed
Competition Same Niche
Desert Biome
Grassland Animals
Dominant Species
13. 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
Littoral Zone
Climate and weather
Tertiary Consumers
Taiga Animals
14. Adaptations for maintaining their internal osmolarity and conserving water
Competition Same Niche 2
Food Web
Temperate Deciduous Forest Animals
Osmoregulation
15. The ultimate source of energy for all organisms
Tropical Rain Forest Animals
Predators
Marine Biomes
Physical Environment-Sunlight
16. Oceans connect to form one continuous body of water - which controls the earth's temperature by absorbing solar heat
Marine Biomes
Temperate Coniferous Plants
Photic zone
Competition Same Niche
17. Affect the type of vegetation that can be supported
Physical Environment-Temperature
Substratum-Minerals
Pyramid of Numbers
Poikilothermic (Cold Blooded)
18. Group of organisms of the same species living together in a given location
Freshwater Biomes
Intertidal Zone Population
Population
Decomposer
19. Only animal life and other heterotrophic life exists
Aphotic Zone
Mutualims
Polar Region
Species
20. Organisms that manufacture their own food
Photic Zone
Autotrophs
Predator-Prey relationship
Environment
21. 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
Temperate Deciduous Forest Animals
Pyramid of Energy
Photic Zone
22. Two fates await the ammonia (NH3). some are nitrified or dentrified
Hemeothermic (Warm Blooded)
Physical Environment-Sunlight
Competition Same Niche 2
Nitrogen Cycle 5
23. Lichens and moss
Lithosphere
Tundra Plants
Food Chain
Pyramid of Numbers
24. 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
Pyramid of Mass
Predator-Prey relationship
Photic zone
Environment
25. Autotrophic green plants and chemosynthetic bacteria that use the energy of the sun and simple raw materials to manufacture carbohydrates - proteins - and lipids
Producers
Abiotic (Physical) Environment
Thundra Animals
Food Pyramids
26. Animals that consume only plants or plant foods
Polar Region
Heterotrophs
Herbivores
Lithosphere
27. Crawling and sessile organsms
Community
Thundra Animals
Benthos
Taiga Biome
28. Monkeys - lizards - snakes - and birds - floor is inhabited by saprophytes
Freshwater Biomes
Tropical Rain Forest Animals
Intraspecific Interactions
Carnivores
29. Jungles characterized by high temperatures and torrential rains -found in Central Africa - Central America - the Amazon basic - and Southeast Asia
Temperate Deciduous Forest Animals
Carbon Cycle 1
Tropical Rain Forest Biome
Abiotic (Physical) Environment
30. Body temperature is very close to that of their surroundings -as temperature rises - these organisms become more active
Poikilothermic (Cold Blooded)
Nitrogen Cycle 4
Pelagic Zone
Desert Biome
31. (living) includes all living things that directly or indirectly influence the life of the organism including the relationships that exist between organisms
Cohesive Force
Tropical Rain Forest Animals
Substratum-Minerals
Biotic Environment
32. Nutrients - water - and sunlight limitations aid in maintaining populations at relatively constant levels
Environmental Factors
Nitrogen Cycle 4
Nitrogen Cycle 3
Pyramid of Mass
33. Animals that consume dead animals
Scavengers
Successive Communities
Obligatory
Pyramid of Energy
34. The orderly process by which one biotic community replaces or succeeds another until a climax community is established
Physical Environment-Sunlight
Hydrosphere
Ecological Succession
Aphotic Zone animals
35. Determines water holding capacity
Substratum-texture
Rootlike holdfasts
Tropical Rain Forest Biome
Nature of Biomes
36. Food chain is not a simple linear chain but an intricate web
Dominant Species
Tropical Rain Forest Biome
Food Web
Carnivores
37. First to resettle a virgin area
Dentrified
Climax Community
Pioneer Organism
Pelagic Zone
38. Individual unit of an ecological system - but the organism itself is composed of smaller units -organs >tissues >cells >molecules >atoms > subatomic particles
Organism
Taiga Plants
Desert Plants
Heterotrophs
39. Recycle water - oxygen - and phosphorus
Ecosystem
Physical Environment-Temperature
Abiotic (Physical) Environment
Other Cycles
40. Determined by the same decisive factors-temperatures and rainfall
Temperate Coniferous Plants
Nature of Biomes
Biome
Organism
41. 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
Grassland Biome
Desert Biome
Secondary Consumers
Carbon Cycle 1
42. 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
Predator-Prey relationship
Substratum-texture
Nitrogen Cycle 4
Carbon Cycle 3
43. Rock and soil surface
Nature of Biomes
Benthos
Lithosphere
Organism
44. Region exposed to low tides that undergoes variations in temperature and periods of dryness
Intertidal Zone
Tropical Rain Forest Animals
Food Web
Nitrogen cycle 1
45. Animals that consume green plants (herbivores)
Abiotic (Physical) Environment
Pelagic Zone
Primary Consumers
Taiga Plants
46. Used to include only the population and not their physical environment
Parasitism
Littoral Zone Populations
Community
Biotic Community
47. Evolve toward a balance in which the predator is a regulatory influence on th prey but not a threat to its survival
Competition Same Niche
Substratum-pH
Nitrified
Predator-Prey relationship
48. Deer - fox - woodchuck - and squirrel
Temperate Deciduous Forest Animals
Competition Same Niche 2
Environmental Factors
Biotic Community
49. Rivers - lakes - ponds - and marshes
Grassland Animals
Tundra Biome
Tropical Rain Forest Animals
Freshwater Biomes
50. When a parasite benefits at the expense of the host
Competition
Hemeothermic (Warm Blooded)
Parasitism
Intertidal Zone Population