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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. Monkeys - lizards - snakes - and birds - floor is inhabited by saprophytes
Carbon Cycle 3
Ecology
Intertidal Zone
Tropical Rain Forest Animals
2. Trees such as beech - maple - oaks - and willows shed their leaves during cold winters months
Carbon Cycle 3
Climax Community
Temperate Deciduous Forest Plants
Community
3. Composed of populations that are able to exist under the new conditions
Taiga Biome
Successive Communities
Second Law of Thermodynamics
Nitrified
4. Consists of populations of different plants and animal species interacting with each other in a given environment
Ecology
Aphotic Zone
Communities
Thundra Animals
5. The stable - living part of the ecosystem in whicih populations exist in balance with each other and with the environment
Nitrogen Cycle 3
Climax Community
Carbon Cycle 3
Lithosphere
6. 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
Communities
Aphotic Zone animals
Aquatic Biomes
Temperate Deciduous Forest Animals
7. Crawling and sessile organsms
Benthos
Species
Cohesive Force
Tundra Biome
8. 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
Carbon Cycle 1
Nitrified
Taiga Plants
Grassland Biome
9. An essential component of amino acids and nucleic acids - which are the building blocks of all living things
Nitrogen
Cohesive Force
Grassland Biome
Substratum-Minerals
10. 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
Polar Region
Desert Plants
Producers
11. Energy is transferred from the original sources in green plants through a series o organisms with repeated stages of consumption and finally decomposition
Nekton
Marine Biomes
Food Pyramids
Food Chain
12. Determines the nature of plant and animal life in the soil
Substratum (soil/rock)
Ecological Succession
Hemeothermic (Warm Blooded)
Pyramid of Mass
13. The major component of the internal environment of all living things
Intertidal Zone
Littoral Zone Populations
Physical Environment- Water
Material Cycles
14. Vegetation has evolved adaptations for water conservation such as needle shaped leaves
Temperate Coniferous Plants
Dentrified
Littoral Zone Populations
Environment
15. 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
Commensalism
Aphotic Zone animals
Desert Biome
Autotrophs
16. Evolved physical mechanisms that allow them to make Use of the heat produced as a consequence of respiratiion
Organism
Hemeothermic (Warm Blooded)
Intertidal Zone Population
Rootlike holdfasts
17. Integrated system of species that are dependent upon one another for survival
Lithosphere
Community
Pelagic Zone
Scavengers
18. Nitrates are absorbed by plants are used to syntheisze nucleic acids and plant proteins
Autotrophs
Physical Environment-Sunlight
Temperate Deciduous Forest Animals
Nitrogen Cycle 2
19. Rhododendrons and pines are more suited for growth in acid oil
Tundra Biome
Substratum-pH
Sere
Desert Biome
20. 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
Predators
Nitrogen Cycle 4
Carbon Cycle 2
Pelagic Zone
21. 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 Animals
Taiga Biome
Pelagic Zone
Heterotrophs
22. Region exposed to low tides that undergoes variations in temperature and periods of dryness
Lithosphere
Omnivores
Scavengers
Intertidal Zone
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
Coimax Vegetatioin
Symbionts
Pyramid of Mass
Second Law of Thermodynamics
24. Animals that consume green plants (herbivores)
Primary Consumers
Competition Same Niche 3
Cohesive Force
Tertiary Consumers
25. 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
Conditions for stability in an Ecosystem
Rootlike holdfasts
Lithosphere
Competition Same Niche 2
26. Nutrients - water - and sunlight limitations aid in maintaining populations at relatively constant levels
Dentrified
Environmental Factors
Omnivores
Parasitism
27. Conserve water actively
Aphotic Zone animals
Second Law of Thermodynamics
Lithosphere
Desert Plants
28. Recycle water - oxygen - and phosphorus
Cohesive Force
Tropical Rain Forest Biome
Herbivores
Other Cycles
29. Consumer organisms that are higher in hte food chain are usually larger and heavier than those further down
Second Law of Thermodynamics
Secondary Consumers
Pyramid of Numbers
Nitrogen Cycle 2
30. Made into nitrites by chemosynthetic bacteria and then to usable nitrates by nitrifying bacteria
Nitrified
Carnivores
Biome
Organism
31. (living) includes all living things that directly or indirectly influence the life of the organism including the relationships that exist between organisms
Biotic Environment
Species
Food Chain
Photic Zone
32. Chief animal inhabitant is the moose; however - the black bear - wolf - and some birds
Pyramid of Numbers
Symbionts
Communities
Taiga Animals
33. Animals that eat both plants and animals
Substratum (soil/rock)
Physical Environment-Temperature
Omnivores
Climate and weather
34. 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
Competition Same Niche
Saprophytes
Physical Environment-Sunlight
Temperate Coniferous Plants
35. Rivers - lakes - ponds - and marshes
Epiphytes
Thundra Animals
Freshwater Biomes
Carnivores
36. Animals that consume only plants or plant foods
Physical Environment- Water
Tropical Rain Forest Biome
Herbivores
Population
37. Includes climate - temperature - availability of light and water - and the local topology
Competition Same Niche 3
Biome
Grassland Biome
Abiotic (Physical) Environment
38. Animals eat the plants and synthesize specific animal proteins form the plant proteins. both plants and animals give off wastes and eventually die
Climax Community
Ecology
Nitrogen Cycle 3
Deep-sea Organisms
39. First to resettle a virgin area
Competition Same Niche 3
Nature of Biomes
Pioneer Organism
Material Cycles
40. Region on the continental shelf that contains ocean area with depths up to 600 feet and extends several hundred miles from the shores
Littoral Zone
Nitrogen Cycle 2
Physical Environment- Water
Osmoregulation
41. Links between oceans and land
Physical Environment-Sunlight
Symbionts
Marshes
Nitrogen cycle 1
42. 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
Deep-sea Organisms
Carbon Cycle 1
Species
Competition Same Niche
43. Include reproduction and protection from predators and destructive weather
Herbivores
Ecology
Cohesive Force
Population
44. Cannot synthesize their ow food and must depend upon autotrophs or others in the ecosystem to obtain their food
Competition
Heterotrophs
Physical Environment- Water
Communities
45. Algae - sponges - clams - snails - sea urchins - starfish - and crabs
Deep-sea Organisms
Littoral Zone
Intertidal Zone Population
Intertidal Zone
46. Adaptations for maintaining their internal osmolarity and conserving water
Decomposer
Lithosphere
Osmoregulation
Polar Region
47. Group of organisms of the same species living together in a given location
Population
Substratum-texture
Heterotrophs
Grassland Biome
48. 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
Second Law of Thermodynamics
Freshwater Biomes
Niche
Climate and weather
49. Two species may rapidly evolve in divergent directions under the strong selection pressure resulting from intense competition. thus - the two species would rapidly evolve greater differences in their niches
Hypotonic
Environmental Factors
Competition Same Niche 3
Marine Biomes
50. Ammonia (NH3) is broken down to release free nitrogen - which returns to the beginning of the denitrifying
Primary Consumers
Aphotic Zone
Biotic Environment
Dentrified