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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. Rhododendrons and pines are more suited for growth in acid oil
Carbon Cycle 1
Temperate Deciduous Forest Animals
Substratum-pH
Tropical Rain Forest Biome
2. Evolved physical mechanisms that allow them to make Use of the heat produced as a consequence of respiratiion
Dominant Species
Abiotic (Physical) Environment
Aphotic Zone
Hemeothermic (Warm Blooded)
3. Have cold winters - warm summers - and moderate rainfall -found in the Northeast and Central-Eastern United States and Central Europe
Biome
Autotrophs
Temperate Deciduous Forest Biome
Nekton
4. Jungles characterized by high temperatures and torrential rains -found in Central Africa - Central America - the Amazon basic - and Southeast Asia
Tropical Rain Forest Biome
Competition Same Niche 2
Temperate Coniferous Plants
Producers
5. Nekton and benthos - scavengers - and predators (fiercely competitive)
Aphotic Zone animals
Pyramid of Numbers
Autotrophs
Food Pyramids
6. Evolve toward a balance in which the predator is a regulatory influence on th prey but not a threat to its survival
Cohesive Force
Predator-Prey relationship
Poikilothermic (Cold Blooded)
Saprophytes
7. Cannot synthesize their ow food and must depend upon autotrophs or others in the ecosystem to obtain their food
Organism
Temperate Coniferous Plants
Aquatic Biomes
Heterotrophs
8. Active swimmers such as fish - sharks - or whales that feed on plankton and smaller fish
Primary Consumers
Coimax Vegetatioin
Food Chain
Nekton
9. Include saprophytic organisms and organisms of decay
Decomposer
Omnivores
Littoral Zone Populations
Environmental Factors
10. Organisms that manufacture their own food
Desert Plants
Substratum-Minerals
Autotrophs
Species
11. Region exposed to low tides that undergoes variations in temperature and periods of dryness
Photic Zone
Intertidal Zone
Taiga Biome
Coimax Vegetatioin
12. Conserve water actively
Nitrogen Cycle 4
Community
Desert Plants
Competition Same Niche 2
13. Nitrates are absorbed by plants are used to syntheisze nucleic acids and plant proteins
Aphotic Zone
Nitrogen Cycle 2
Food Chain
Hemeothermic (Warm Blooded)
14. Frozen area with no vegetation and terrestrial animals -animals that do inhabit polar regions generally live near the polar oceans
Polar Region
Aphotic Zone animals
Climax Community
Tropical Rain Forest Animals
15. 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
Temperate Deciduous Forest Plants
Lithosphere
Grassland Biome
16. The orderly process by which one biotic community replaces or succeeds another until a climax community is established
Community
Ecological Succession
Taiga Biome
Species
17. Includes the community and the environment and usually all five kingdoms
Ecosystem
Carbon Cycle 3
Thundra Animals
Abiotic (Physical) Environment
18. Animals that feed on secondary consumer
Tertiary Consumers
Competition Same Niche
Tropical Rain Forest Animals
Predator-Prey relationship
19. 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
Taiga Biome
Scavengers
Temperate Deciduous Forest Plants
Hypotonic
20. Community in an ecological succession is identified by a dominant species
Sere
Biotic Community
Ecosystem
Predators
21. Algae - sponges - clams - snails - sea urchins - starfish - and crabs
Biome
Grassland Animals
Parasitism
Intertidal Zone Population
22. 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
Temperate Coniferous Forest Biome
Carbon Cycle 1
Littoral Zone Populations
Carnivores
23. First to resettle a virgin area
Secondary Consumers
Pioneer Organism
Desert Biome
Competition
24. The ultimate source of energy for all organisms
Physical Environment-Sunlight
Biotic Community
Nitrogen Cycle 4
Hemeothermic (Warm Blooded)
25. Distinct community in a geographic region
Biome
Aphotic Zone animals
Physical Environment-Sunlight
Organism
26. Affect the type of vegetation that can be supported
Primary Consumers
Physical Environment-Temperature
Pyramid of Numbers
Substratum-Minerals
27. Receive less rainfall than the temperate forests - have long - cold winters - and are inhabited by single coniferous tree-the spruce -extreme northern parts of Canada and Russia
Taiga Biome
Saprophytes
Nitrogen Cycle 5
Grassland Biome
28. Autotrophic green plants and chemosynthetic bacteria that use the energy of the sun and simple raw materials to manufacture carbohydrates - proteins - and lipids
Aphotic Zone animals
Intertidal Zone
Material Cycles
Producers
29. Contains plankton - passively drifting masses of microscopic photosynthetic and heterotrophic organisms - and nekton - and algae
Photic Zone animals
Organism
Substratum-Minerals
Nitrogen Cycle 2
30. Include reproduction and protection from predators and destructive weather
Other Cycles
Marshes
Cohesive Force
Obligatory
31. Animals that consume green plants (herbivores)
Hydrosphere
Primary Consumers
Biosphere
Food Web
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
Material Cycles
Nature of Biomes
Climate and weather
Pelagic Zone
33. Elemental nitrogen is chemically inert and cannot be used by most organisms. Lightning and nitrogen-fixing bacteria in the roots of legumes change the nitrogen into the usable - soluble nitrates
Nitrogen cycle 1
Cohesive Force
Saprophytes
Carbon Cycle 2
34. 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 1
Desert animals
Carbon Cycle 3
Benthos
35. Rivers - lakes - ponds - and marshes
Freshwater Biomes
Secondary Consumers
Dominant Species
Organism
36. Free-living organisms that feed on other living organisms
Temperate Coniferous Plants
Desert animals
Grassland Biome
Predators
37. Nutrients - water - and sunlight limitations aid in maintaining populations at relatively constant levels
Ecology
Competition Same Niche
Environmental Factors
Grassland Biome
38. Because organisms at the upper levels of the food chain derive their food energy from organisms at lower levels - and because energy is lost from one level to the next - each level can support a successively smaller biomass
Nitrogen cycle 1
Epiphytes
Pyramid of Mass
Ecology
39. Only animal life and other heterotrophic life exists
Tertiary Consumers
Intertidal Zone Population
Aphotic Zone
Lithosphere
40. Polar bears - musk oxen - and arctic hens
Physical Environment-Temperature
Community
Nitrified
Thundra Animals
41. Adaptations for maintaining their internal osmolarity and conserving water
Osmoregulation
Epiphytes
Tundra Plants
Biotic Environment
42. The chief disruptive force
Competition
Photic Zone animals
Poikilothermic (Cold Blooded)
Freshwater Biomes
43. 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
Food Pyramids
Osmoregulation
Cohesive Force
Saprophytes
44. 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
Nitrogen
Second Law of Thermodynamics
Conditions for stability in an Ecosystem
45. Plants growing on other plants - trees grow closely together; sunlight hardly reaches the forest floor
Ecology
Scavengers
Epiphytes
Substratum-texture
46. Individual unit of an ecological system - but the organism itself is composed of smaller units -organs >tissues >cells >molecules >atoms > subatomic particles
Carnivores
Organism
Scavengers
Substratum-texture
47. Determines the nature of plant and animal life in the soil
Nekton
Grassland Animals
Scavengers
Substratum (soil/rock)
48. Sunlit layer of the open sea extending to a depth of 250-600ft
Photic zone
Physical Environment-Temperature
Taiga Animals
Decomposer
49. In the ocean - the top layer thorugh which light can penetrate - is where all aquatic photosynthetic activity takes place
Obligatory
Aquatic Biomes
Nekton
Photic Zone
50. An essential component of amino acids and nucleic acids - which are the building blocks of all living things
Photic zone
Nitrogen
Ecology
Aphotic Zone
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