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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 that feed on secondary consumer
Tertiary Consumers
Biotic Community
Secondary Consumers
Heterotrophs
2. Determines water holding capacity
Substratum-texture
Dominant Species
Competition Same Niche 2
Nitrogen Cycle 5
3. Community in an ecological succession is identified by a dominant species
Second Law of Thermodynamics
Sere
Climax Community
Hypotonic
4. (living) includes all living things that directly or indirectly influence the life of the organism including the relationships that exist between organisms
Biotic Environment
Competition Same Niche 3
Climate and weather
Nitrogen Cycle 3
5. Includes all portions of the planet that support life -the atmosphere - the lithosphere - and the hydrosphere
Biosphere
Benthos
Biotic Environment
Pyramid of Energy
6. Cannot synthesize their ow food and must depend upon autotrophs or others in the ecosystem to obtain their food
Temperate Deciduous Forest Biome
Pyramid of Energy
Heterotrophs
Polar Region
7. Include reproduction and protection from predators and destructive weather
Food Pyramids
Dentrified
Cohesive Force
Primary Consumers
8. Forest floors contain moss and lichens
Other Cycles
Taiga Plants
Lithosphere
Food Pyramids
9. 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
Scavengers
Decomposer
Nitrified
Niche
10. Frozen area with no vegetation and terrestrial animals -animals that do inhabit polar regions generally live near the polar oceans
Ecosystem
Second Law of Thermodynamics
Nitrogen Cycle 5
Polar Region
11. Animals that consume primary consumers (carnivores)
Saprophytes
Secondary Consumers
Thundra Animals
Obligatory
12. Two fates await the ammonia (NH3). some are nitrified or dentrified
Aphotic Zone animals
Carbon Cycle 1
Littoral Zone Populations
Nitrogen Cycle 5
13. The chief disruptive force
Desert animals
Competition
Lithosphere
Nitrogen Cycle 3
14. Live together in an intimate - often permanent association - which may or may not be beneficial to both participants
Carbon Cycle 3
Temperate Deciduous Forest Plants
Marine Biomes
Symbionts
15. Trees such as beech - maple - oaks - and willows shed their leaves during cold winters months
Temperate Deciduous Forest Plants
Aquatic Biomes
Substratum-Minerals
Nitrogen Cycle 3
16. Any group of similar organisms that are capable of reproducing
Communities
Tropical Rain Forest Plants
Species
Polar Region
17. 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 Chain
Temperate Deciduous Forest Plants
Carbon Cycle 3
Thundra Animals
18. Includes climate - temperature - availability of light and water - and the local topology
Competition Same Niche 3
Thundra Animals
Abiotic (Physical) Environment
Material Cycles
19. Oceans connect to form one continuous body of water - which controls the earth's temperature by absorbing solar heat
Niche
Marine Biomes
Secondary Consumers
Tertiary Consumers
20. Rhododendrons and pines are more suited for growth in acid oil
Pyramid of Numbers
Environment
Aphotic Zone
Substratum-pH
21. In the ocean - the top layer thorugh which light can penetrate - is where all aquatic photosynthetic activity takes place
Parasitism
Food Pyramids
Photic Zone
Carnivores
22. The major component of the internal environment of all living things
Carbon Cycle 2
Nitrogen Cycle 5
Physical Environment- Water
Temperate Deciduous Forest Animals
23. Evolve toward a balance in which the predator is a regulatory influence on th prey but not a threat to its survival
Second Law of Thermodynamics
Rootlike holdfasts
Predator-Prey relationship
Community
24. Links between oceans and land
Biotic Environment
Other Cycles
Marshes
Symbionts
25. 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
Thundra Animals
Temperate Deciduous Forest Animals
Littoral Zone
Intraspecific Interactions
26. 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
Saprophytes
Dentrified
Grassland Biome
Thundra Animals
27. One that exerts control over the other species that are present
Scavengers
Primary Consumers
Dominant Species
Heterotrophs
28. Freshwater Biomes vs. Saltwater 1: Freshwater is _______________ which results in the passage of water into the cell. Freshwater organisms have homeostatic mechanisms to maintain water balance by the regular removal of the excess water. these include
Hypotonic
Substratum-Humus
Intertidal Zone Population
Decomposer
29. Consists of populations of different plants and animal species interacting with each other in a given environment
Communities
Littoral Zone Populations
Tropical Rain Forest Plants
Hydrosphere
30. Determine by the amount of decaying plant and animal life in the soil
Coimax Vegetatioin
Substratum-Humus
Aphotic Zone animals
Commensalism
31. 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-Minerals
Photic zone
Coimax Vegetatioin
Food Pyramids
32. Determines the nature of plant and animal life in the soil
Aphotic Zone animals
Substratum-pH
Substratum (soil/rock)
Ecology
33. 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
Scavengers
Intertidal Zone Population
Carbon Cycle 1
Substratum-Minerals
34. Used to include only the population and not their physical environment
Climax Community
Secondary Consumers
Desert Plants
Biotic Community
35. Algae - crabs - crustacea - and many different species of fish
Second Law of Thermodynamics
Littoral Zone Populations
Ecosystem
Cohesive Force
36. Animals that consume dead animals
Parasitism
Scavengers
Lithosphere
Mutualims
37. Lichens and moss
Tundra Plants
Mutualims
Benthos
Scavengers
38. Monkeys - lizards - snakes - and birds - floor is inhabited by saprophytes
Substratum-texture
Obligatory
Tropical Rain Forest Animals
Nitrogen Cycle 5
39. 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
Pyramid of Numbers
Obligatory
Grassland Animals
40. Deer - fox - woodchuck - and squirrel
Producers
Temperate Deciduous Forest Animals
Herbivores
Primary Consumers
41. Plants growing on other plants - trees grow closely together; sunlight hardly reaches the forest floor
Coimax Vegetatioin
Epiphytes
Lithosphere
Tropical Rain Forest Plants
42. The stable - living part of the ecosystem in whicih populations exist in balance with each other and with the environment
Climax Community
Grassland Animals
Carnivores
Symbionts
43. The vegetation that becomes dominant and stable after years of evolutiionary development
Intertidal Zone
Nitrogen Cycle 3
Coimax Vegetatioin
Dentrified
44. Symbiotic relationship from which both organisms derive some benefit
Pyramid of Numbers
Intertidal Zone
Mutualims
Nitrogen Cycle 4
45. 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
Herbivores
Second Law of Thermodynamics
Pyramid of Energy
Food Pyramids
46. Consumer organisms that are higher in hte food chain are usually larger and heavier than those further down
Temperate Coniferous Forest Biome
Niche
Pyramid of Numbers
Pyramid of Mass
47. Autotrophic green plants and chemosynthetic bacteria that use the energy of the sun and simple raw materials to manufacture carbohydrates - proteins - and lipids
Competition
Pyramid of Numbers
Nitrified
Producers
48. Only animal life and other heterotrophic life exists
Aphotic Zone animals
Physical Environment- Water
Competition Same Niche 2
Aphotic Zone
49. 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
Saprophytes
Desert Biome
Carbon Cycle 3
Abiotic (Physical) Environment
50. Determined by the same decisive factors-temperatures and rainfall
Deep-sea Organisms
Grassland Animals
Polar Region
Nature of Biomes