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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. Jungles characterized by high temperatures and torrential rains -found in Central Africa - Central America - the Amazon basic - and Southeast Asia
Second Law of Thermodynamics
Temperate Coniferous Forest Biome
Tropical Rain Forest Biome
Abiotic (Physical) Environment
2. Active swimmers such as fish - sharks - or whales that feed on plankton and smaller fish
Nekton
Nitrogen cycle 1
Pyramid of Energy
Desert Biome
3. Adaptations for maintaining their internal osmolarity and conserving water
Littoral Zone Populations
Intertidal Zone
Osmoregulation
Carbon Cycle 1
4. Elemental nitrogen is chemically inert and cannot be used by most organisms. Lightning and nitrogen-fixing bacteria in the roots of legumes change the nitrogen into the usable - soluble nitrates
Nitrogen cycle 1
Competition Same Niche 2
Ecology
Nitrogen
5. Monkeys - lizards - snakes - and birds - floor is inhabited by saprophytes
Photic Zone animals
Tropical Rain Forest Animals
Pyramid of Mass
Food Web
6. Region typical of the open seas and can be divided into photic and aphotic zones
Pelagic Zone
Lithosphere
Carbon Cycle 2
Epiphytes
7. Body temperature is very close to that of their surroundings -as temperature rises - these organisms become more active
Nitrogen Cycle 5
Poikilothermic (Cold Blooded)
Herbivores
Scavengers
8. Links between oceans and land
Desert Plants
Competition Same Niche 3
Marshes
Biotic Community
9. 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
Nitrogen Cycle 4
Saprophytes
Substratum-Humus
Substratum-texture
10. Crawling and sessile organsms
Physical Environment- Water
Dominant Species
Aphotic Zone animals
Benthos
11. Autotrophic green plants and chemosynthetic bacteria that use the energy of the sun and simple raw materials to manufacture carbohydrates - proteins - and lipids
Nitrogen Cycle 4
Producers
Photic Zone animals
Tundra Plants
12. Material is cycled and recycled betweenn organisms and their environments - passing from inorganic forms to organic forms and then back to the inorganic forms
Osmoregulation
Material Cycles
Nitrogen Cycle 3
Secondary Consumers
13. Nitrates are absorbed by plants are used to syntheisze nucleic acids and plant proteins
Temperate Deciduous Forest Animals
Tropical Rain Forest Plants
Nitrogen Cycle 2
Second Law of Thermodynamics
14. Vegetation has evolved adaptations for water conservation such as needle shaped leaves
Predator-Prey relationship
Temperate Coniferous Plants
Marine Biomes
Heterotrophs
15. Symbiotic relationship from which both organisms derive some benefit
Coimax Vegetatioin
Mutualims
Temperate Deciduous Forest Biome
Environment
16. 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
Predator-Prey relationship
Communities
Biome
Second Law of Thermodynamics
17. Consists of populations of different plants and animal species interacting with each other in a given environment
Substratum (soil/rock)
Substratum-Humus
Obligatory
Communities
18. The stable - living part of the ecosystem in whicih populations exist in balance with each other and with the environment
Environment
Climax Community
Climate and weather
Deep-sea Organisms
19. Chief animal inhabitant is the moose; however - the black bear - wolf - and some birds
Taiga Animals
Community
Littoral Zone Populations
Primary Consumers
20. Includes all portions of the planet that support life -the atmosphere - the lithosphere - and the hydrosphere
Biosphere
Desert Biome
Food Pyramids
Nitrogen Cycle 4
21. Only animal life and other heterotrophic life exists
Aphotic Zone
Symbionts
Omnivores
Secondary Consumers
22. Animals eat plants and use the digested nutrients to form carbohydrates - fats - and proteins characteristic of the species. a part of these organic compounds is used as fuel in respiration in plants and animals
Carbon Cycle 2
Tropical Rain Forest Plants
Nitrogen Cycle 2
Competition
23. Composed of populations that are able to exist under the new conditions
Aphotic Zone animals
Successive Communities
Climate and weather
Intertidal Zone
24. 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
Abiotic (Physical) Environment
Substratum (soil/rock)
Food Pyramids
25. One species may be competitively superior to the other and drive the second to extinction
Aphotic Zone
Competition Same Niche
Nature of Biomes
Decomposer
26. The oceans
Poikilothermic (Cold Blooded)
Competition Same Niche
Hydrosphere
Carnivores
27. Evolved physical mechanisms that allow them to make Use of the heat produced as a consequence of respiratiion
Competition Same Niche 2
Desert animals
Hemeothermic (Warm Blooded)
Saprophytes
28. Algae - sponges - clams - snails - sea urchins - starfish - and crabs
Coimax Vegetatioin
Conditions for stability in an Ecosystem
Nitrogen Cycle 4
Intertidal Zone Population
29. Made into nitrites by chemosynthetic bacteria and then to usable nitrates by nitrifying bacteria
Freshwater Biomes
Commensalism
Primary Consumers
Nitrified
30. Frozen area with no vegetation and terrestrial animals -animals that do inhabit polar regions generally live near the polar oceans
Polar Region
Epiphytes
Community
Competition Same Niche 3
31. Live in burrows had few birds and mammals are found except those which have developed adaptations for maintaining constant body temperatures
Hemeothermic (Warm Blooded)
Autotrophs
Pyramid of Energy
Desert animals
32. The chief disruptive force
Competition
Nitrogen Cycle 2
Carnivores
Nitrogen Cycle 3
33. The ultimate source of energy for all organisms
Rootlike holdfasts
Taiga Animals
Physical Environment-Sunlight
Conditions for stability in an Ecosystem
34. Conserve water actively
Primary Consumers
Desert Plants
Dentrified
Autotrophs
35. The major component of the internal environment of all living things
Pelagic Zone
Temperate Coniferous Forest Biome
Physical Environment- Water
Physical Environment-Temperature
36. Rivers - lakes - ponds - and marshes
Food Chain
Temperate Coniferous Forest Biome
Freshwater Biomes
Nitrogen Cycle 3
37. The orderly process by which one biotic community replaces or succeeds another until a climax community is established
Ecological Succession
Omnivores
Predator-Prey relationship
Nitrogen Cycle 4
38. First to resettle a virgin area
Temperate Deciduous Forest Plants
Second Law of Thermodynamics
Pioneer Organism
Biosphere
39. Organisms that manufacture their own food
Communities
Aphotic Zone
Intertidal Zone
Autotrophs
40. Lichens and moss
Obligatory
Food Pyramids
Tundra Plants
Nitrogen Cycle 2
41. Food chain is not a simple linear chain but an intricate web
Poikilothermic (Cold Blooded)
Food Web
Aquatic Biomes
Rootlike holdfasts
42. 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
Intraspecific Interactions
Temperate Deciduous Forest Plants
Saprophytes
Dentrified
43. Include reproduction and protection from predators and destructive weather
Biotic Community
Cohesive Force
Heterotrophs
Obligatory
44. 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 Biome
Tropical Rain Forest Animals
Carbon Cycle 3
Desert Biome
45. Trees such as beech - maple - oaks - and willows shed their leaves during cold winters months
Sere
Physical Environment- Water
Temperate Deciduous Forest Plants
Environmental Factors
46. In the ocean - the top layer thorugh which light can penetrate - is where all aquatic photosynthetic activity takes place
Ecosystem
Nitrogen
Competition Same Niche 3
Photic Zone
47. Affect the type of vegetation that can be supported
Abiotic (Physical) Environment
Competition Same Niche
Substratum-Minerals
Symbionts
48. Group of organisms of the same species living together in a given location
Carbon Cycle 3
Lithosphere
Omnivores
Population
49. (living) includes all living things that directly or indirectly influence the life of the organism including the relationships that exist between organisms
Biotic Environment
Desert Plants
Poikilothermic (Cold Blooded)
Desert Biome
50. Polar bears - musk oxen - and arctic hens
Thundra Animals
Aphotic Zone animals
Photic Zone
Ecosystem