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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. The study of interactions between organisms and their environment
Hemeothermic (Warm Blooded)
Rootlike holdfasts
Ecology
Hypotonic
2. Contains plankton - passively drifting masses of microscopic photosynthetic and heterotrophic organisms - and nekton - and algae
Producers
Climate and weather
Photic Zone animals
Material Cycles
3. Nitrates are absorbed by plants are used to syntheisze nucleic acids and plant proteins
Nitrogen Cycle 2
Polar Region
Hydrosphere
Species
4. Includes climate - temperature - availability of light and water - and the local topology
Dominant Species
Abiotic (Physical) Environment
Climax Community
Photic Zone animals
5. 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
Biotic Environment
Substratum-Humus
Deep-sea Organisms
6. Vegetation such as vines and eppiphytes
Tropical Rain Forest Plants
Competition Same Niche 3
Climax Community
Tertiary Consumers
7. 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
Pyramid of Mass
Pyramid of Numbers
Heterotrophs
Grassland Biome
8. Affect the type of vegetation that can be supported
Carbon Cycle 1
Substratum-Minerals
Photic Zone
Tropical Rain Forest Animals
9. Regiong beneatht he photic zone that receives no light
Lithosphere
Aquatic Biomes
Grassland Biome
Aphotic Zone
10. 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
Mutualims
Freshwater Biomes
Scavengers
Second Law of Thermodynamics
11. Algae - sponges - clams - snails - sea urchins - starfish - and crabs
Osmoregulation
Community
Intertidal Zone Population
Temperate Deciduous Forest Plants
12. Evolved physical mechanisms that allow them to make Use of the heat produced as a consequence of respiratiion
Substratum-Humus
Hemeothermic (Warm Blooded)
Tertiary Consumers
Rootlike holdfasts
13. Consists of populations of different plants and animal species interacting with each other in a given environment
Producers
Marshes
Biotic Community
Communities
14. Forest floors contain moss and lichens
Taiga Plants
Primary Consumers
Autotrophs
Grassland Biome
15. Animals that consume primary consumers (carnivores)
Hemeothermic (Warm Blooded)
Heterotrophs
Secondary Consumers
Competition
16. Polar bears - musk oxen - and arctic hens
Nitrified
Thundra Animals
Benthos
Second Law of Thermodynamics
17. Oceans connect to form one continuous body of water - which controls the earth's temperature by absorbing solar heat
Symbionts
Marine Biomes
Intraspecific Interactions
Taiga Animals
18. Rivers - lakes - ponds - and marshes
Freshwater Biomes
Littoral Zone Populations
Tundra Biome
Lithosphere
19. Trees such as beech - maple - oaks - and willows shed their leaves during cold winters months
Intertidal Zone
Dentrified
Climate and weather
Temperate Deciduous Forest Plants
20. Sunlit layer of the open sea extending to a depth of 250-600ft
Temperate Deciduous Forest Biome
Competition Same Niche 2
Photic zone
Ecological Succession
21. Used to include only the population and not their physical environment
Biotic Community
Biosphere
Freshwater Biomes
Aquatic Biomes
22. The major component of the internal environment of all living things
Food Web
Physical Environment- Water
Environment
Littoral Zone Populations
23. Body temperature is very close to that of their surroundings -as temperature rises - these organisms become more active
Substratum (soil/rock)
Conditions for stability in an Ecosystem
Symbionts
Poikilothermic (Cold Blooded)
24. 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
Food Pyramids
Tertiary Consumers
Carbon Cycle 2
Deep-sea Organisms
25. The stable - living part of the ecosystem in whicih populations exist in balance with each other and with the environment
Hemeothermic (Warm Blooded)
Climax Community
Herbivores
Tropical Rain Forest Animals
26. 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 Deciduous Forest Animals
Temperate Coniferous Forest Biome
Marshes
Ecological Succession
27. When a parasite benefits at the expense of the host
Osmoregulation
Temperate Coniferous Plants
Parasitism
Competition Same Niche 3
28. First to resettle a virgin area
Predators
Pioneer Organism
Nitrified
Tropical Rain Forest Animals
29. 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
Rootlike holdfasts
Dominant Species
Physical Environment- Water
Temperate Deciduous Forest Biome
30. Links between oceans and land
Marshes
Grassland Animals
Carbon Cycle 1
Dominant Species
31. Region typical of the open seas and can be divided into photic and aphotic zones
Pelagic Zone
Food Chain
Mutualims
Biotic Environment
32. When one organism is benefited by the association and the other is not affected
Thundra Animals
Aphotic Zone
Primary Consumers
Commensalism
33. Cannot synthesize their ow food and must depend upon autotrophs or others in the ecosystem to obtain their food
Freshwater Biomes
Heterotrophs
Nitrogen
Omnivores
34. Adaptations for maintaining their internal osmolarity and conserving water
Temperate Deciduous Forest Animals
Photic zone
Osmoregulation
Nitrogen Cycle 4
35. Food chain is not a simple linear chain but an intricate web
Substratum (soil/rock)
Food Web
Decomposer
Substratum-Minerals
36. 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
Grassland Biome
Photic zone
Second Law of Thermodynamics
Niche
37. Animals that consume dead animals
Dentrified
Benthos
Scavengers
Commensalism
38. One that exerts control over the other species that are present
Temperate Coniferous Plants
Dominant Species
Pioneer Organism
Nekton
39. Ammonia (NH3) is broken down to release free nitrogen - which returns to the beginning of the denitrifying
Taiga Plants
Dentrified
Food Pyramids
Deep-sea Organisms
40. Jungles characterized by high temperatures and torrential rains -found in Central Africa - Central America - the Amazon basic - and Southeast Asia
Osmoregulation
Niche
Benthos
Tropical Rain Forest Biome
41. Any group of similar organisms that are capable of reproducing
Symbionts
Environmental Factors
Species
Tertiary Consumers
42. 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
Heterotrophs
Aquatic Biomes
Food Pyramids
Nitrified
43. 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
Temperate Coniferous Plants
Predators
Tundra Biome
Substratum (soil/rock)
44. In the ocean - the top layer thorugh which light can penetrate - is where all aquatic photosynthetic activity takes place
Photic Zone
Aphotic Zone
Successive Communities
Carnivores
45. Rhododendrons and pines are more suited for growth in acid oil
Niche
Cohesive Force
Nitrogen cycle 1
Substratum-pH
46. Animals that feed on secondary consumer
Carbon Cycle 2
Tropical Rain Forest Animals
Tertiary Consumers
Omnivores
47. Frozen area with no vegetation and terrestrial animals -animals that do inhabit polar regions generally live near the polar oceans
Polar Region
Population
Temperate Coniferous Plants
Mutualims
48. Plants growing on other plants - trees grow closely together; sunlight hardly reaches the forest floor
Epiphytes
Temperate Deciduous Forest Plants
Hydrosphere
Marshes
49. Symbiotic relationship from which both organisms derive some benefit
Mutualims
Physical Environment-Temperature
Carbon Cycle 3
Autotrophs
50. Region on the continental shelf that contains ocean area with depths up to 600 feet and extends several hundred miles from the shores
Grassland Animals
Taiga Plants
Littoral Zone
Coimax Vegetatioin
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