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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. 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
Physical Environment-Sunlight
Competition Same Niche 2
Carbon Cycle 1
2. Active swimmers such as fish - sharks - or whales that feed on plankton and smaller fish
Coimax Vegetatioin
Littoral Zone
Successive Communities
Nekton
3. Ammonia (NH3) is broken down to release free nitrogen - which returns to the beginning of the denitrifying
Predators
Poikilothermic (Cold Blooded)
Dentrified
Nitrogen
4. 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
Communities
Aphotic Zone animals
Deep-sea Organisms
5. 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
Pyramid of Mass
Nitrogen
Epiphytes
6. 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
Tertiary Consumers
Population
Secondary Consumers
7. The chief disruptive force
Competition
Predator-Prey relationship
Material Cycles
Food Web
8. Made into nitrites by chemosynthetic bacteria and then to usable nitrates by nitrifying bacteria
Producers
Nitrified
Secondary Consumers
Food Pyramids
9. Animals that feed on secondary consumer
Tertiary Consumers
Sere
Obligatory
Pyramid of Mass
10. Two fates await the ammonia (NH3). some are nitrified or dentrified
Nitrogen Cycle 5
Successive Communities
Substratum (soil/rock)
Littoral Zone
11. Links between oceans and land
Second Law of Thermodynamics
Biome
Marshes
Desert animals
12. Rivers - lakes - ponds - and marshes
Freshwater Biomes
Aphotic Zone
Hypotonic
Dominant Species
13. 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
Aphotic Zone
Niche
Photic Zone animals
Predator-Prey relationship
14. Include reproduction and protection from predators and destructive weather
Taiga Plants
Cohesive Force
Taiga Biome
Biotic Community
15. Nitrates are absorbed by plants are used to syntheisze nucleic acids and plant proteins
Niche
Nitrogen Cycle 2
Freshwater Biomes
Photic Zone
16. Plants growing on other plants - trees grow closely together; sunlight hardly reaches the forest floor
Epiphytes
Taiga Biome
Conditions for stability in an Ecosystem
Temperate Deciduous Forest Biome
17. 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
Community
Dominant Species
Hypotonic
Mutualims
18. Forest floors contain moss and lichens
Aphotic Zone
Sere
Biotic Community
Taiga Plants
19. Body temperature is very close to that of their surroundings -as temperature rises - these organisms become more active
Tertiary Consumers
Producers
Nitrogen
Poikilothermic (Cold Blooded)
20. In the ocean - the top layer thorugh which light can penetrate - is where all aquatic photosynthetic activity takes place
Communities
Intertidal Zone
Nitrogen Cycle 5
Photic Zone
21. Distinct community in a geographic region
Biome
Pelagic Zone
Biosphere
Polar Region
22. Jungles characterized by high temperatures and torrential rains -found in Central Africa - Central America - the Amazon basic - and Southeast Asia
Symbionts
Organism
Tropical Rain Forest Biome
Cohesive Force
23. 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
Nitrogen Cycle 5
Second Law of Thermodynamics
Mutualims
Benthos
24. Chief animal inhabitant is the moose; however - the black bear - wolf - and some birds
Aphotic Zone
Intertidal Zone Population
Taiga Animals
Substratum-Minerals
25. Includes all portions of the planet that support life -the atmosphere - the lithosphere - and the hydrosphere
Biosphere
Species
Deep-sea Organisms
Nitrogen cycle 1
26. Algae - crabs - crustacea - and many different species of fish
Aphotic Zone
Intraspecific Interactions
Temperate Deciduous Forest Animals
Littoral Zone Populations
27. 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
Taiga Animals
Saprophytes
Competition Same Niche 3
Temperate Coniferous Forest Biome
28. Includes the community and the environment and usually all five kingdoms
Intertidal Zone Population
Poikilothermic (Cold Blooded)
Freshwater Biomes
Ecosystem
29. Frozen area with no vegetation and terrestrial animals -animals that do inhabit polar regions generally live near the polar oceans
Producers
Temperate Coniferous Plants
Polar Region
Population
30. Region exposed to low tides that undergoes variations in temperature and periods of dryness
Hemeothermic (Warm Blooded)
Intertidal Zone
Symbionts
Tundra Plants
31. Energy is transferred from the original sources in green plants through a series o organisms with repeated stages of consumption and finally decomposition
Epiphytes
Food Chain
Desert animals
Physical Environment-Temperature
32. Nekton and benthos - scavengers - and predators (fiercely competitive)
Aphotic Zone animals
Nitrogen Cycle 2
Aphotic Zone
Environmental Factors
33. Consumer organisms that are higher in hte food chain are usually larger and heavier than those further down
Pyramid of Numbers
Tropical Rain Forest Animals
Hydrosphere
Intertidal Zone
34. Rhododendrons and pines are more suited for growth in acid oil
Decomposer
Photic Zone
Substratum-pH
Second Law of Thermodynamics
35. 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
Hypotonic
Aphotic Zone
Tundra Plants
Aquatic Biomes
36. Animals that consume dead animals
Pyramid of Energy
Scavengers
Saprophytes
Autotrophs
37. Community in an ecological succession is identified by a dominant species
Heterotrophs
Sere
Polar Region
Temperate Deciduous Forest Biome
38. Animals eat the plants and synthesize specific animal proteins form the plant proteins. both plants and animals give off wastes and eventually die
Abiotic (Physical) Environment
Nitrogen Cycle 3
Hydrosphere
Nitrogen Cycle 2
39. Evolved physical mechanisms that allow them to make Use of the heat produced as a consequence of respiratiion
Hemeothermic (Warm Blooded)
Sere
Temperate Coniferous Plants
Successive Communities
40. Developed long legs and many are hoofed
Heterotrophs
Physical Environment- Water
Freshwater Biomes
Grassland Animals
41. Needs constant energy source and cycling of materials between the living system
Climax Community
Conditions for stability in an Ecosystem
Deep-sea Organisms
Aphotic Zone
42. The orderly process by which one biotic community replaces or succeeds another until a climax community is established
Predators
Pioneer Organism
Successive Communities
Ecological Succession
43. The vegetation that becomes dominant and stable after years of evolutiionary development
Primary Consumers
Mutualims
Grassland Biome
Coimax Vegetatioin
44. 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
Coimax Vegetatioin
Nitrogen Cycle 4
Environmental Factors
Climax Community
45. 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
Hypotonic
Rootlike holdfasts
Aphotic Zone
Abiotic (Physical) Environment
46. Deer - fox - woodchuck - and squirrel
Temperate Coniferous Forest Biome
Ecology
Tertiary Consumers
Temperate Deciduous Forest Animals
47. One species may be competitively superior to the other and drive the second to extinction
Hypotonic
Marshes
Nitrogen cycle 1
Competition Same Niche
48. Rock and soil surface
Lithosphere
Taiga Animals
Marine Biomes
Intraspecific Interactions
49. Live in burrows had few birds and mammals are found except those which have developed adaptations for maintaining constant body temperatures
Temperate Coniferous Forest Biome
Desert animals
Species
Pioneer Organism
50. Encompasses all that is external to the organism and is necessary for its existence
Temperate Coniferous Plants
Pyramid of Mass
Environment
Conditions for stability in an Ecosystem