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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. 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
Dentrified
Food Chain
Conditions for stability in an Ecosystem
2. 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
Temperate Coniferous Forest Biome
Commensalism
Taiga Biome
Intertidal Zone Population
3. Links between oceans and land
Competition Same Niche
Marshes
Dominant Species
Coimax Vegetatioin
4. Made into nitrites by chemosynthetic bacteria and then to usable nitrates by nitrifying bacteria
Nitrified
Biotic Community
Intertidal Zone
Nitrogen Cycle 5
5. Rhododendrons and pines are more suited for growth in acid oil
Biome
Climax Community
Substratum-pH
Rootlike holdfasts
6. The major component of the internal environment of all living things
Biotic Community
Species
Parasitism
Physical Environment- Water
7. Needs constant energy source and cycling of materials between the living system
Conditions for stability in an Ecosystem
Pelagic Zone
Aquatic Biomes
Carbon Cycle 2
8. Region typical of the open seas and can be divided into photic and aphotic zones
Pelagic Zone
Coimax Vegetatioin
Temperate Deciduous Forest Animals
Tropical Rain Forest Plants
9. Algae - crabs - crustacea - and many different species of fish
Scavengers
Littoral Zone Populations
Cohesive Force
Competition Same Niche
10. 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
Competition Same Niche 3
Organism
Saprophytes
Intertidal Zone Population
11. 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
Substratum-Humus
Dentrified
Species
Food Pyramids
12. Sunlit layer of the open sea extending to a depth of 250-600ft
Photic zone
Pyramid of Energy
Herbivores
Substratum-texture
13. One species may be competitively superior to the other and drive the second to extinction
Littoral Zone
Nekton
Competition Same Niche
Saprophytes
14. Live in burrows had few birds and mammals are found except those which have developed adaptations for maintaining constant body temperatures
Desert animals
Substratum-texture
Autotrophs
Successive Communities
15. Evolved physical mechanisms that allow them to make Use of the heat produced as a consequence of respiratiion
Autotrophs
Hemeothermic (Warm Blooded)
Temperate Deciduous Forest Plants
Littoral Zone
16. Region on the continental shelf that contains ocean area with depths up to 600 feet and extends several hundred miles from the shores
Littoral Zone Populations
Intertidal Zone Population
Littoral Zone
Taiga Animals
17. Chief animal inhabitant is the moose; however - the black bear - wolf - and some birds
Aquatic Biomes
Photic zone
Taiga Animals
Marshes
18. Affect the type of vegetation that can be supported
Substratum-Minerals
Secondary Consumers
Commensalism
Substratum-Humus
19. Any group of similar organisms that are capable of reproducing
Aphotic Zone animals
Temperate Deciduous Forest Biome
Species
Physical Environment-Temperature
20. Body temperature is very close to that of their surroundings -as temperature rises - these organisms become more active
Competition Same Niche
Poikilothermic (Cold Blooded)
Physical Environment- Water
Photic Zone
21. Trees such as beech - maple - oaks - and willows shed their leaves during cold winters months
Substratum-Minerals
Temperate Deciduous Forest Plants
Tropical Rain Forest Animals
Conditions for stability in an Ecosystem
22. Have cold winters - warm summers - and moderate rainfall -found in the Northeast and Central-Eastern United States and Central Europe
Nitrogen Cycle 3
Species
Temperate Deciduous Forest Biome
Hemeothermic (Warm Blooded)
23. 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
Biosphere
Symbionts
Climate and weather
24. Jungles characterized by high temperatures and torrential rains -found in Central Africa - Central America - the Amazon basic - and Southeast Asia
Biotic Environment
Substratum-texture
Osmoregulation
Tropical Rain Forest Biome
25. 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
Food Web
Environment
Carbon Cycle 3
Polar Region
26. Animals that consume only plants or plant foods
Nitrogen Cycle 2
Herbivores
Littoral Zone Populations
Cohesive Force
27. Adaptations for maintaining their internal osmolarity and conserving water
Osmoregulation
Temperate Coniferous Forest Biome
Marine Biomes
Herbivores
28. 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
Omnivores
Littoral Zone Populations
Nekton
29. When a parasite benefits at the expense of the host
Parasitism
Niche
Organism
Decomposer
30. Animals that eat both plants and animals
Tertiary Consumers
Omnivores
Nitrogen Cycle 4
Coimax Vegetatioin
31. 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
Species
Secondary Consumers
Temperate Deciduous Forest Animals
32. Vegetation such as vines and eppiphytes
Lithosphere
Littoral Zone Populations
Tropical Rain Forest Plants
Taiga Animals
33. Determines the nature of plant and animal life in the soil
Aphotic Zone
Substratum (soil/rock)
Heterotrophs
Carbon Cycle 3
34. Oceans connect to form one continuous body of water - which controls the earth's temperature by absorbing solar heat
Secondary Consumers
Marine Biomes
Omnivores
Carbon Cycle 3
35. 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
Taiga Biome
Abiotic (Physical) Environment
Temperate Deciduous Forest Biome
36. Consumer organisms that are higher in hte food chain are usually larger and heavier than those further down
Deep-sea Organisms
Secondary Consumers
Pyramid of Numbers
Decomposer
37. Active swimmers such as fish - sharks - or whales that feed on plankton and smaller fish
Nekton
Abiotic (Physical) Environment
Conditions for stability in an Ecosystem
Biotic Community
38. Contains plankton - passively drifting masses of microscopic photosynthetic and heterotrophic organisms - and nekton - and algae
Photic Zone animals
Substratum-pH
Secondary Consumers
Osmoregulation
39. 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
Photic Zone
Ecology
Desert Biome
Second Law of Thermodynamics
40. Ammonia (NH3) is broken down to release free nitrogen - which returns to the beginning of the denitrifying
Competition Same Niche 2
Mutualims
Nitrogen Cycle 4
Dentrified
41. Evolve toward a balance in which the predator is a regulatory influence on th prey but not a threat to its survival
Nitrogen Cycle 2
Commensalism
Substratum-Humus
Predator-Prey relationship
42. Determine by the amount of decaying plant and animal life in the soil
Substratum-Humus
Temperate Coniferous Plants
Biome
Rootlike holdfasts
43. 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
Substratum-Humus
Pyramid of Energy
Nitrogen Cycle 2
Ecological Succession
44. Group of organisms of the same species living together in a given location
Temperate Deciduous Forest Biome
Substratum-texture
Population
Food Pyramids
45. 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
Biotic Environment
Substratum-pH
Nature of Biomes
Saprophytes
46. Only animal life and other heterotrophic life exists
Pyramid of Numbers
Environmental Factors
Aphotic Zone
Intraspecific Interactions
47. Integrated system of species that are dependent upon one another for survival
Community
Predator-Prey relationship
Decomposer
Dentrified
48. One that exerts control over the other species that are present
Competition Same Niche
Physical Environment-Sunlight
Environment
Dominant Species
49. Distinct community in a geographic region
Nitrogen Cycle 4
Biome
Aphotic Zone animals
Environmental Factors
50. An essential component of amino acids and nucleic acids - which are the building blocks of all living things
Organism
Ecology
Dentrified
Nitrogen