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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. Plants growing on other plants - trees grow closely together; sunlight hardly reaches the forest floor
Epiphytes
Secondary Consumers
Successive Communities
Poikilothermic (Cold Blooded)
2. The study of interactions between organisms and their environment
Ecology
Temperate Coniferous Forest Biome
Intertidal Zone
Nitrogen
3. The oceans
Biosphere
Hydrosphere
Competition
Primary Consumers
4. Cannot synthesize their ow food and must depend upon autotrophs or others in the ecosystem to obtain their food
Heterotrophs
Conditions for stability in an Ecosystem
Biome
Temperate Deciduous Forest Animals
5. Only animal life and other heterotrophic life exists
Pyramid of Energy
Aphotic Zone
Obligatory
Freshwater Biomes
6. Live in burrows had few birds and mammals are found except those which have developed adaptations for maintaining constant body temperatures
Heterotrophs
Desert animals
Biotic Community
Hypotonic
7. Two fates await the ammonia (NH3). some are nitrified or dentrified
Photic zone
Nitrogen Cycle 5
Physical Environment-Temperature
Ecological Succession
8. Any group of similar organisms that are capable of reproducing
Decomposer
Carnivores
Species
Heterotrophs
9. The major component of the internal environment of all living things
Tertiary Consumers
Hydrosphere
Physical Environment- Water
Primary Consumers
10. Community in an ecological succession is identified by a dominant species
Nitrogen Cycle 2
Sere
Second Law of Thermodynamics
Population
11. 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
Marshes
Hypotonic
Sere
Heterotrophs
12. The stable - living part of the ecosystem in whicih populations exist in balance with each other and with the environment
Climax Community
Intertidal Zone Population
Tropical Rain Forest Animals
Aphotic Zone animals
13. Consists of populations of different plants and animal species interacting with each other in a given environment
Ecosystem
Nitrogen
Communities
Hydrosphere
14. Region on the continental shelf that contains ocean area with depths up to 600 feet and extends several hundred miles from the shores
Tropical Rain Forest Animals
Dominant Species
Littoral Zone
Aquatic Biomes
15. Includes all portions of the planet that support life -the atmosphere - the lithosphere - and the hydrosphere
Carbon Cycle 2
Carbon Cycle 3
Biosphere
Herbivores
16. When a parasite benefits at the expense of the host
Photic zone
Parasitism
Competition Same Niche 2
Mutualims
17. 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
Pyramid of Numbers
Symbionts
Carbon Cycle 2
Successive Communities
18. Used to include only the population and not their physical environment
Biotic Community
Cohesive Force
Temperate Deciduous Forest Animals
Nitrogen Cycle 5
19. Determine by the amount of decaying plant and animal life in the soil
Littoral Zone Populations
Temperate Deciduous Forest Animals
Taiga Biome
Substratum-Humus
20. Organisms that manufacture their own food
Nitrogen Cycle 5
Pyramid of Numbers
Autotrophs
Osmoregulation
21. Conserve water actively
Grassland Biome
Hypotonic
Carbon Cycle 2
Desert Plants
22. Regiong beneatht he photic zone that receives no light
Competition Same Niche
Marshes
Aphotic Zone
Grassland Biome
23. 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
Climate and weather
Taiga Biome
Temperate Deciduous Forest Plants
Organism
24. 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
Pyramid of Numbers
Littoral Zone Populations
Nitrogen Cycle 3
25. Animals that consume dead animals
Rootlike holdfasts
Omnivores
Scavengers
Environmental Factors
26. Crawling and sessile organsms
Epiphytes
Abiotic (Physical) Environment
Benthos
Biotic Environment
27. Material is cycled and recycled betweenn organisms and their environments - passing from inorganic forms to organic forms and then back to the inorganic forms
Carnivores
Taiga Plants
Material Cycles
Nitrified
28. Recycle water - oxygen - and phosphorus
Aquatic Biomes
Other Cycles
Physical Environment- Water
Temperate Coniferous Plants
29. One species may be competitively superior to the other and drive the second to extinction
Osmoregulation
Secondary Consumers
Competition Same Niche
Carbon Cycle 1
30. Links between oceans and land
Marshes
Pyramid of Numbers
Environmental Factors
Marine Biomes
31. 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
Herbivores
Predators
Pyramid of Numbers
32. 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
Carbon Cycle 3
Competition Same Niche 3
Ecological Succession
Pyramid of Energy
33. Rhododendrons and pines are more suited for growth in acid oil
Population
Hemeothermic (Warm Blooded)
Pyramid of Energy
Substratum-pH
34. Have cold winters - warm summers - and moderate rainfall -found in the Northeast and Central-Eastern United States and Central Europe
Temperate Deciduous Forest Biome
Epiphytes
Pioneer Organism
Aquatic Biomes
35. Algae - sponges - clams - snails - sea urchins - starfish - and crabs
Predators
Intertidal Zone Population
Aquatic Biomes
Tundra Plants
36. Symbiotic relationship from which both organisms derive some benefit
Mutualims
Substratum-Minerals
Nitrogen Cycle 5
Competition Same Niche 3
37. Jungles characterized by high temperatures and torrential rains -found in Central Africa - Central America - the Amazon basic - and Southeast Asia
Tropical Rain Forest Plants
Tropical Rain Forest Animals
Tropical Rain Forest Biome
Substratum (soil/rock)
38. Monkeys - lizards - snakes - and birds - floor is inhabited by saprophytes
Commensalism
Tropical Rain Forest Animals
Omnivores
Taiga Animals
39. Deer - fox - woodchuck - and squirrel
Sere
Temperate Deciduous Forest Animals
Climate and weather
Benthos
40. The orderly process by which one biotic community replaces or succeeds another until a climax community is established
Environmental Factors
Food Web
Ecological Succession
Biotic Community
41. Food chain is not a simple linear chain but an intricate web
Nitrogen Cycle 3
Food Web
Thundra Animals
Nitrogen Cycle 2
42. Region typical of the open seas and can be divided into photic and aphotic zones
Desert Biome
Pelagic Zone
Osmoregulation
Substratum-Minerals
43. 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
Organism
Nitrogen Cycle 4
Autotrophs
Epiphytes
44. 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
Tertiary Consumers
Carbon Cycle 1
Food Web
Taiga Plants
45. Includes the community and the environment and usually all five kingdoms
Abiotic (Physical) Environment
Coimax Vegetatioin
Ecosystem
Aphotic Zone
46. Contains plankton - passively drifting masses of microscopic photosynthetic and heterotrophic organisms - and nekton - and algae
Photic Zone animals
Autotrophs
Dentrified
Climax Community
47. 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
Competition
Niche
Aphotic Zone
Grassland Animals
48. Frozen area with no vegetation and terrestrial animals -animals that do inhabit polar regions generally live near the polar oceans
Cohesive Force
Polar Region
Ecology
Rootlike holdfasts
49. Made into nitrites by chemosynthetic bacteria and then to usable nitrates by nitrifying bacteria
Symbionts
Nitrified
Temperate Deciduous Forest Animals
Pyramid of Energy
50. Must be maintained at an optimal level -organisms have adaptations necessary for protection against extremes
Physical Environment-Temperature
Epiphytes
Abiotic (Physical) Environment
Omnivores