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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. Any group of similar organisms that are capable of reproducing
Secondary Consumers
Species
Temperate Coniferous Forest Biome
Carnivores
2. (living) includes all living things that directly or indirectly influence the life of the organism including the relationships that exist between organisms
Predators
Biosphere
Biotic Environment
Population
3. Rhododendrons and pines are more suited for growth in acid oil
Hydrosphere
Nitrogen Cycle 5
Substratum-pH
Temperate Deciduous Forest Biome
4. Active swimmers such as fish - sharks - or whales that feed on plankton and smaller fish
Communities
Ecosystem
Nekton
Ecology
5. Region on the continental shelf that contains ocean area with depths up to 600 feet and extends several hundred miles from the shores
Mutualims
Pyramid of Mass
Littoral Zone
Substratum (soil/rock)
6. First to resettle a virgin area
Biome
Temperate Deciduous Forest Biome
Hydrosphere
Pioneer Organism
7. 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
Species
Pioneer Organism
Grassland Biome
8. The orderly process by which one biotic community replaces or succeeds another until a climax community is established
Desert Biome
Nitrogen cycle 1
Nitrogen
Ecological Succession
9. Region exposed to low tides that undergoes variations in temperature and periods of dryness
Substratum-texture
Photic Zone animals
Nitrogen Cycle 4
Intertidal Zone
10. Includes all portions of the planet that support life -the atmosphere - the lithosphere - and the hydrosphere
Biosphere
Symbionts
Temperate Deciduous Forest Plants
Predators
11. One species may be competitively superior to the other and drive the second to extinction
Marshes
Competition Same Niche
Temperate Deciduous Forest Biome
Intertidal Zone Population
12. Live in burrows had few birds and mammals are found except those which have developed adaptations for maintaining constant body temperatures
Desert Plants
Food Pyramids
Desert animals
Symbionts
13. Material is cycled and recycled betweenn organisms and their environments - passing from inorganic forms to organic forms and then back to the inorganic forms
Climate and weather
Carnivores
Biotic Community
Material Cycles
14. Animals that eat both plants and animals
Omnivores
Scavengers
Carbon Cycle 3
Intertidal Zone
15. 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
Aquatic Biomes
Carbon Cycle 2
Commensalism
Carbon Cycle 1
16. Consumer organisms that are higher in hte food chain are usually larger and heavier than those further down
Pyramid of Numbers
Climax Community
Dentrified
Dominant Species
17. Animals eat the plants and synthesize specific animal proteins form the plant proteins. both plants and animals give off wastes and eventually die
Nitrogen
Aphotic Zone
Nitrogen Cycle 3
Sere
18. Freshwater Biomes vs. Saltwater 3: Freshwater biomes - except very large lakes - are affected by variations in _________. temperature of freshwater bodies varies considerably; they may freeze or dry up - and mud from their floors may be stirred up by
Desert Biome
Food Web
Other Cycles
Climate and weather
19. One that exerts control over the other species that are present
Communities
Dominant Species
Food Web
Desert Biome
20. Determines water holding capacity
Abiotic (Physical) Environment
Parasitism
Nitrogen Cycle 4
Substratum-texture
21. Jungles characterized by high temperatures and torrential rains -found in Central Africa - Central America - the Amazon basic - and Southeast Asia
Species
Tropical Rain Forest Biome
Climate and weather
Primary Consumers
22. An essential component of amino acids and nucleic acids - which are the building blocks of all living things
Pyramid of Mass
Nitrogen
Tundra Biome
Predators
23. 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
Carbon Cycle 3
Pyramid of Energy
Dentrified
Nitrogen Cycle 3
24. Energy is transferred from the original sources in green plants through a series o organisms with repeated stages of consumption and finally decomposition
Nekton
Substratum-pH
Tertiary Consumers
Food Chain
25. Vegetation has evolved adaptations for water conservation such as needle shaped leaves
Desert animals
Ecology
Tropical Rain Forest Plants
Temperate Coniferous Plants
26. Rivers - lakes - ponds - and marshes
Parasitism
Lithosphere
Freshwater Biomes
Predators
27. The vegetation that becomes dominant and stable after years of evolutiionary development
Hypotonic
Intraspecific Interactions
Coimax Vegetatioin
Substratum-Humus
28. Links between oceans and land
Carbon Cycle 3
Marshes
Mutualims
Autotrophs
29. Animals that consume only plants or plant foods
Abiotic (Physical) Environment
Pyramid of Mass
Nitrified
Herbivores
30. The stable - living part of the ecosystem in whicih populations exist in balance with each other and with the environment
Competition Same Niche 3
Aquatic Biomes
Food Web
Climax Community
31. When one organism is benefited by the association and the other is not affected
Photic Zone animals
Desert Plants
Commensalism
Physical Environment- Water
32. Monkeys - lizards - snakes - and birds - floor is inhabited by saprophytes
Photic zone
Omnivores
Material Cycles
Tropical Rain Forest Animals
33. Distinct community in a geographic region
Biome
Desert Plants
Polar Region
Rootlike holdfasts
34. The major component of the internal environment of all living things
Substratum-texture
Temperate Deciduous Forest Animals
Physical Environment- Water
Nitrogen
35. Nekton and benthos - scavengers - and predators (fiercely competitive)
Tropical Rain Forest Plants
Aphotic Zone animals
Pelagic Zone
Second Law of Thermodynamics
36. One or both organisms can't survive without the other
Obligatory
Pyramid of Mass
Ecology
Poikilothermic (Cold Blooded)
37. 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
Tertiary Consumers
Substratum-Humus
Nitrogen
38. Composed of populations that are able to exist under the new conditions
Temperate Deciduous Forest Animals
Successive Communities
Producers
Marshes
39. In the ocean - the top layer thorugh which light can penetrate - is where all aquatic photosynthetic activity takes place
Saprophytes
Photic Zone
Hemeothermic (Warm Blooded)
Tropical Rain Forest Plants
40. Determines the nature of plant and animal life in the soil
Competition Same Niche 3
Primary Consumers
Substratum (soil/rock)
Pioneer Organism
41. Conserve water actively
Desert Plants
Tropical Rain Forest Animals
Rootlike holdfasts
Osmoregulation
42. 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
Grassland Biome
Pelagic Zone
Mutualims
Biotic Community
43. Trees such as beech - maple - oaks - and willows shed their leaves during cold winters months
Temperate Deciduous Forest Plants
Material Cycles
Environment
Pyramid of Numbers
44. Have cold winters - warm summers - and moderate rainfall -found in the Northeast and Central-Eastern United States and Central Europe
Herbivores
Niche
Temperate Deciduous Forest Biome
Ecological Succession
45. Used to include only the population and not their physical environment
Food Web
Pelagic Zone
Biotic Community
Tropical Rain Forest Animals
46. Chief animal inhabitant is the moose; however - the black bear - wolf - and some birds
Nitrogen Cycle 5
Taiga Animals
Polar Region
Climate and weather
47. Determined by the same decisive factors-temperatures and rainfall
Intertidal Zone Population
Nekton
Carbon Cycle 2
Nature of Biomes
48. 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
Intertidal Zone Population
Desert Biome
Intraspecific Interactions
Material Cycles
49. The study of interactions between organisms and their environment
Ecology
Grassland Biome
Predators
Rootlike holdfasts
50. Animals that only eat other animals -possess pointed teeth and fang-like canine teeth for tearing flesh -have shorter digestive tracts because the easier digestibility of animal food
Second Law of Thermodynamics
Carnivores
Carbon Cycle 2
Abiotic (Physical) Environment