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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. Includes climate - temperature - availability of light and water - and the local topology
Parasitism
Abiotic (Physical) Environment
Temperate Coniferous Plants
Secondary Consumers
2. Autotrophic green plants and chemosynthetic bacteria that use the energy of the sun and simple raw materials to manufacture carbohydrates - proteins - and lipids
Desert Plants
Nitrogen Cycle 4
Physical Environment- Water
Producers
3. Community in an ecological succession is identified by a dominant species
Freshwater Biomes
Nitrogen Cycle 4
Sere
Competition Same Niche 2
4. Distinct community in a geographic region
Tropical Rain Forest Plants
Commensalism
Biosphere
Biome
5. 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
Poikilothermic (Cold Blooded)
Nitrogen Cycle 4
Osmoregulation
Taiga Biome
6. Rhododendrons and pines are more suited for growth in acid oil
Substratum-pH
Tundra Biome
Ecology
Pelagic Zone
7. The stable - living part of the ecosystem in whicih populations exist in balance with each other and with the environment
Ecological Succession
Climax Community
Material Cycles
Nitrogen Cycle 2
8. Sunlit layer of the open sea extending to a depth of 250-600ft
Photic zone
Omnivores
Climate and weather
Commensalism
9. Conserve water actively
Climax Community
Desert Plants
Nitrogen Cycle 5
Competition Same Niche 2
10. 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
Temperate Coniferous Forest Biome
Organism
Aquatic Biomes
Community
11. The chief disruptive force
Nitrogen Cycle 3
Ecology
Competition
Predators
12. Rock and soil surface
Temperate Deciduous Forest Animals
Saprophytes
Lithosphere
Desert animals
13. 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
Biosphere
Carbon Cycle 3
Hemeothermic (Warm Blooded)
Taiga Biome
14. Recycle water - oxygen - and phosphorus
Other Cycles
Grassland Animals
Poikilothermic (Cold Blooded)
Nekton
15. Adaptations for maintaining their internal osmolarity and conserving water
Food Web
Polar Region
Osmoregulation
Poikilothermic (Cold Blooded)
16. Made into nitrites by chemosynthetic bacteria and then to usable nitrates by nitrifying bacteria
Physical Environment-Sunlight
Nitrified
Secondary Consumers
Carnivores
17. 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
Tropical Rain Forest Biome
Food Pyramids
Benthos
Taiga Biome
18. Developed long legs and many are hoofed
Grassland Animals
Intertidal Zone Population
Dominant Species
Nitrogen Cycle 5
19. When one organism is benefited by the association and the other is not affected
Predator-Prey relationship
Grassland Animals
Commensalism
Obligatory
20. The study of interactions between organisms and their environment
Carbon Cycle 1
Temperate Coniferous Forest Biome
Ecology
Saprophytes
21. Any group of similar organisms that are capable of reproducing
Species
Marine Biomes
Organism
Temperate Deciduous Forest Plants
22. One or both organisms can't survive without the other
Competition Same Niche
Taiga Animals
Temperate Deciduous Forest Plants
Obligatory
23. First to resettle a virgin area
Abiotic (Physical) Environment
Biome
Pioneer Organism
Predator-Prey relationship
24. Body temperature is very close to that of their surroundings -as temperature rises - these organisms become more active
Aphotic Zone animals
Carbon Cycle 3
Lithosphere
Poikilothermic (Cold Blooded)
25. 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
Parasitism
Successive Communities
Food Web
Rootlike holdfasts
26. Consists of populations of different plants and animal species interacting with each other in a given environment
Rootlike holdfasts
Intertidal Zone
Nekton
Communities
27. Symbiotic relationship from which both organisms derive some benefit
Secondary Consumers
Mutualims
Lithosphere
Tropical Rain Forest Plants
28. 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
Pyramid of Energy
Conditions for stability in an Ecosystem
Tropical Rain Forest Biome
Second Law of Thermodynamics
29. Used to include only the population and not their physical environment
Marshes
Biotic Environment
Biotic Community
Nature of Biomes
30. Jungles characterized by high temperatures and torrential rains -found in Central Africa - Central America - the Amazon basic - and Southeast Asia
Physical Environment- Water
Tropical Rain Forest Biome
Lithosphere
Competition Same Niche
31. Have cold winters - warm summers - and moderate rainfall -found in the Northeast and Central-Eastern United States and Central Europe
Nitrogen
Temperate Deciduous Forest Biome
Aphotic Zone
Ecology
32. Integrated system of species that are dependent upon one another for survival
Community
Nitrogen
Biotic Community
Tropical Rain Forest Biome
33. 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
Desert Biome
Grassland Biome
Aphotic Zone animals
Intertidal Zone Population
34. Needs constant energy source and cycling of materials between the living system
Temperate Deciduous Forest Animals
Benthos
Biosphere
Conditions for stability in an Ecosystem
35. Nitrates are absorbed by plants are used to syntheisze nucleic acids and plant proteins
Marine Biomes
Competition Same Niche
Desert animals
Nitrogen Cycle 2
36. Determines the nature of plant and animal life in the soil
Substratum (soil/rock)
Desert Plants
Aphotic Zone
Community
37. (living) includes all living things that directly or indirectly influence the life of the organism including the relationships that exist between organisms
Littoral Zone Populations
Symbionts
Biotic Environment
Dominant Species
38. 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
Tropical Rain Forest Biome
Rootlike holdfasts
Osmoregulation
39. Have adaptations enabling them to survive in very cod water - with high pressures - and in complete darkness
Population
Polar Region
Deep-sea Organisms
Temperate Deciduous Forest Plants
40. 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
Pyramid of Energy
Carbon Cycle 1
Grassland Animals
Niche
41. Ammonia (NH3) is broken down to release free nitrogen - which returns to the beginning of the denitrifying
Dentrified
Pioneer Organism
Pelagic Zone
Predator-Prey relationship
42. In the ocean - the top layer thorugh which light can penetrate - is where all aquatic photosynthetic activity takes place
Heterotrophs
Pyramid of Numbers
Population
Photic Zone
43. Determines water holding capacity
Littoral Zone
Other Cycles
Substratum-texture
Competition Same Niche 2
44. Food chain is not a simple linear chain but an intricate web
Temperate Deciduous Forest Animals
Climax Community
Food Web
Carbon Cycle 1
45. One species may be competitively superior in some regions - and the other may be superior in other regions under different environmental conditions. this would result in the elimination of one species in some places and the other in other places
Competition Same Niche 2
Rootlike holdfasts
Littoral Zone Populations
Marshes
46. The orderly process by which one biotic community replaces or succeeds another until a climax community is established
Population
Biosphere
Dominant Species
Ecological Succession
47. 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
Herbivores
Carbon Cycle 3
Competition
Pyramid of Numbers
48. Two fates await the ammonia (NH3). some are nitrified or dentrified
Climax Community
Cohesive Force
Nitrogen Cycle 5
Successive Communities
49. The ultimate source of energy for all organisms
Climate and weather
Other Cycles
Physical Environment-Sunlight
Pioneer Organism
50. Active swimmers such as fish - sharks - or whales that feed on plankton and smaller fish
Epiphytes
Food Web
Ecological Succession
Nekton