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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. Contains plankton - passively drifting masses of microscopic photosynthetic and heterotrophic organisms - and nekton - and algae
Pyramid of Mass
Polar Region
Pelagic Zone
Photic Zone animals
2. Includes the community and the environment and usually all five kingdoms
Communities
Nitrogen Cycle 2
Tundra Biome
Ecosystem
3. Developed long legs and many are hoofed
Grassland Animals
Tertiary Consumers
Biome
Parasitism
4. (living) includes all living things that directly or indirectly influence the life of the organism including the relationships that exist between organisms
Desert Plants
Biotic Environment
Symbionts
Substratum-Minerals
5. Frozen area with no vegetation and terrestrial animals -animals that do inhabit polar regions generally live near the polar oceans
Deep-sea Organisms
Dentrified
Photic Zone
Polar Region
6. Polar bears - musk oxen - and arctic hens
Thundra Animals
Pelagic Zone
Ecosystem
Predators
7. Live together in an intimate - often permanent association - which may or may not be beneficial to both participants
Substratum-texture
Grassland Biome
Symbionts
Competition Same Niche 2
8. Lichens and moss
Tundra Plants
Hydrosphere
Pyramid of Mass
Pyramid of Numbers
9. Evolve toward a balance in which the predator is a regulatory influence on th prey but not a threat to its survival
Aphotic Zone
Freshwater Biomes
Predator-Prey relationship
Pyramid of Energy
10. When a parasite benefits at the expense of the host
Thundra Animals
Predator-Prey relationship
Nitrogen Cycle 5
Parasitism
11. Determined by the same decisive factors-temperatures and rainfall
Food Chain
Nature of Biomes
Intertidal Zone
Cohesive Force
12. Must be maintained at an optimal level -organisms have adaptations necessary for protection against extremes
Epiphytes
Physical Environment-Temperature
Photic Zone animals
Parasitism
13. 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
Herbivores
Food Pyramids
Desert animals
Tropical Rain Forest Plants
14. Oceans connect to form one continuous body of water - which controls the earth's temperature by absorbing solar heat
Desert Biome
Carbon Cycle 2
Marine Biomes
Lithosphere
15. Include reproduction and protection from predators and destructive weather
Cohesive Force
Niche
Substratum (soil/rock)
Dentrified
16. Conserve water actively
Desert Plants
Poikilothermic (Cold Blooded)
Parasitism
Temperate Deciduous Forest Plants
17. Vegetation has evolved adaptations for water conservation such as needle shaped leaves
Pyramid of Energy
Temperate Coniferous Plants
Second Law of Thermodynamics
Dentrified
18. Trees such as beech - maple - oaks - and willows shed their leaves during cold winters months
Dominant Species
Environment
Temperate Deciduous Forest Plants
Polar Region
19. 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
Desert Biome
Substratum-pH
Coimax Vegetatioin
20. Includes climate - temperature - availability of light and water - and the local topology
Autotrophs
Taiga Biome
Biotic Community
Abiotic (Physical) Environment
21. The vegetation that becomes dominant and stable after years of evolutiionary development
Aphotic Zone animals
Osmoregulation
Photic zone
Coimax Vegetatioin
22. 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
Nitrified
Littoral Zone Populations
Taiga Animals
23. Used to include only the population and not their physical environment
Biosphere
Temperate Deciduous Forest Animals
Primary Consumers
Biotic Community
24. Forest floors contain moss and lichens
Substratum-Minerals
Taiga Plants
Biotic Community
Competition Same Niche 2
25. Defines the functional role of an organism in its ecosystem -described what the organism eats - where and how it obtains its food - what climatic factors it can tolerate and which are optimal - the nature of its parasites and predators - where and ho
Other Cycles
Primary Consumers
Pyramid of Mass
Niche
26. Organisms that manufacture their own food
Abiotic (Physical) Environment
Conditions for stability in an Ecosystem
Autotrophs
Littoral Zone Populations
27. Include saprophytic organisms and organisms of decay
Tertiary Consumers
Decomposer
Carbon Cycle 2
Predator-Prey relationship
28. Encompasses all that is external to the organism and is necessary for its existence
Tundra Plants
Conditions for stability in an Ecosystem
Environment
Physical Environment-Sunlight
29. 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
Substratum (soil/rock)
Second Law of Thermodynamics
Producers
Tertiary Consumers
30. Chief animal inhabitant is the moose; however - the black bear - wolf - and some birds
Desert Plants
Ecological Succession
Temperate Coniferous Forest Biome
Taiga Animals
31. Cannot synthesize their ow food and must depend upon autotrophs or others in the ecosystem to obtain their food
Competition Same Niche 3
Nekton
Substratum-pH
Heterotrophs
32. Material is cycled and recycled betweenn organisms and their environments - passing from inorganic forms to organic forms and then back to the inorganic forms
Temperate Coniferous Plants
Food Pyramids
Carnivores
Material Cycles
33. Animals that consume green plants (herbivores)
Primary Consumers
Littoral Zone Populations
Ecological Succession
Epiphytes
34. 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
Tropical Rain Forest Plants
Aquatic Biomes
Nitrogen Cycle 5
Photic zone
35. Composed of populations that are able to exist under the new conditions
Successive Communities
Second Law of Thermodynamics
Taiga Biome
Nature of Biomes
36. In the ocean - the top layer thorugh which light can penetrate - is where all aquatic photosynthetic activity takes place
Photic Zone
Deep-sea Organisms
Omnivores
Carbon Cycle 3
37. Two fates await the ammonia (NH3). some are nitrified or dentrified
Intertidal Zone
Tropical Rain Forest Plants
Nitrogen Cycle 5
Temperate Coniferous Forest Biome
38. Integrated system of species that are dependent upon one another for survival
Substratum-texture
Littoral Zone
Competition
Community
39. One species may be competitively superior to the other and drive the second to extinction
Photic zone
Competition Same Niche
Cohesive Force
Substratum-pH
40. An essential component of amino acids and nucleic acids - which are the building blocks of all living things
Pyramid of Mass
Nitrogen
Aphotic Zone
Nitrogen Cycle 2
41. Rock and soil surface
Mutualims
Hypotonic
Taiga Biome
Lithosphere
42. Algae - sponges - clams - snails - sea urchins - starfish - and crabs
Intertidal Zone Population
Biotic Environment
Herbivores
Nekton
43. 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
Pyramid of Numbers
Tundra Biome
Carbon Cycle 2
Lithosphere
44. Have cold winters - warm summers - and moderate rainfall -found in the Northeast and Central-Eastern United States and Central Europe
Predator-Prey relationship
Temperate Deciduous Forest Biome
Temperate Deciduous Forest Plants
Photic zone
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
Substratum (soil/rock)
Saprophytes
Temperate Coniferous Plants
Ecological Succession
46. Monkeys - lizards - snakes - and birds - floor is inhabited by saprophytes
Desert Biome
Carbon Cycle 3
Tropical Rain Forest Animals
Dominant Species
47. One or both organisms can't survive without the other
Obligatory
Primary Consumers
Coimax Vegetatioin
Photic Zone
48. Vegetation such as vines and eppiphytes
Littoral Zone
Carbon Cycle 1
Mutualims
Tropical Rain Forest Plants
49. Distinct community in a geographic region
Biome
Polar Region
Taiga Biome
Obligatory
50. Nitrates are absorbed by plants are used to syntheisze nucleic acids and plant proteins
Conditions for stability in an Ecosystem
Scavengers
Nitrogen Cycle 2
Temperate Deciduous Forest Biome
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