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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. Developed long legs and many are hoofed
Abiotic (Physical) Environment
Taiga Animals
Temperate Deciduous Forest Animals
Grassland Animals
2. Symbiotic relationship from which both organisms derive some benefit
Mutualims
Heterotrophs
Tropical Rain Forest Biome
Tropical Rain Forest Plants
3. 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
Ecological Succession
Intraspecific Interactions
Intertidal Zone
Communities
4. Monkeys - lizards - snakes - and birds - floor is inhabited by saprophytes
Desert Plants
Temperate Deciduous Forest Biome
Tropical Rain Forest Animals
Tertiary Consumers
5. Encompasses all that is external to the organism and is necessary for its existence
Marshes
Secondary Consumers
Environment
Tundra Plants
6. Adaptations for maintaining their internal osmolarity and conserving water
Pioneer Organism
Osmoregulation
Intraspecific Interactions
Hydrosphere
7. 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
Second Law of Thermodynamics
Nitrified
Biome
Competition Same Niche 3
8. Animals that consume green plants (herbivores)
Secondary Consumers
Substratum-texture
Tertiary Consumers
Primary Consumers
9. Jungles characterized by high temperatures and torrential rains -found in Central Africa - Central America - the Amazon basic - and Southeast Asia
Niche
Tropical Rain Forest Biome
Competition Same Niche 3
Littoral Zone
10. Lichens and moss
Grassland Biome
Herbivores
Tundra Plants
Dentrified
11. Have adaptations enabling them to survive in very cod water - with high pressures - and in complete darkness
Parasitism
Deep-sea Organisms
Aquatic Biomes
Carbon Cycle 1
12. Any group of similar organisms that are capable of reproducing
Taiga Animals
Carbon Cycle 1
Ecosystem
Species
13. Affect the type of vegetation that can be supported
Aphotic Zone animals
Material Cycles
Substratum-Minerals
Pioneer Organism
14. Individual unit of an ecological system - but the organism itself is composed of smaller units -organs >tissues >cells >molecules >atoms > subatomic particles
Substratum-Minerals
Organism
Intraspecific Interactions
Producers
15. Consumer organisms that are higher in hte food chain are usually larger and heavier than those further down
Pyramid of Numbers
Heterotrophs
Freshwater Biomes
Rootlike holdfasts
16. Links between oceans and land
Temperate Coniferous Plants
Scavengers
Ecological Succession
Marshes
17. Determine by the amount of decaying plant and animal life in the soil
Second Law of Thermodynamics
Physical Environment-Temperature
Substratum-Humus
Nitrified
18. Animals that eat both plants and animals
Environmental Factors
Omnivores
Primary Consumers
Nitrogen Cycle 5
19. Rock and soil surface
Ecological Succession
Lithosphere
Ecology
Intraspecific Interactions
20. Include reproduction and protection from predators and destructive weather
Nitrified
Photic Zone animals
Cohesive Force
Pyramid of Mass
21. Includes climate - temperature - availability of light and water - and the local topology
Tropical Rain Forest Animals
Obligatory
Primary Consumers
Abiotic (Physical) Environment
22. The orderly process by which one biotic community replaces or succeeds another until a climax community is established
Poikilothermic (Cold Blooded)
Ecological Succession
Organism
Ecosystem
23. 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
Nitrogen Cycle 2
Primary Consumers
Taiga Biome
Species
24. Plants growing on other plants - trees grow closely together; sunlight hardly reaches the forest floor
Second Law of Thermodynamics
Cohesive Force
Epiphytes
Food Chain
25. 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
Biotic Environment
Omnivores
Temperate Coniferous Forest Biome
Nitrogen cycle 1
26. Trees such as beech - maple - oaks - and willows shed their leaves during cold winters months
Decomposer
Predator-Prey relationship
Temperate Deciduous Forest Plants
Environmental Factors
27. 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
Nitrogen Cycle 4
Hydrosphere
Biosphere
28. Recycle water - oxygen - and phosphorus
Nitrified
Sere
Marshes
Other Cycles
29. Oceans connect to form one continuous body of water - which controls the earth's temperature by absorbing solar heat
Marine Biomes
Substratum-texture
Temperate Coniferous Forest Biome
Physical Environment- Water
30. Deer - fox - woodchuck - and squirrel
Tropical Rain Forest Biome
Biome
Intraspecific Interactions
Temperate Deciduous Forest Animals
31. Composed of populations that are able to exist under the new conditions
Rootlike holdfasts
Lithosphere
Successive Communities
Omnivores
32. The chief disruptive force
Marshes
Competition
Successive Communities
Substratum-pH
33. Community in an ecological succession is identified by a dominant species
Scavengers
Sere
Obligatory
Heterotrophs
34. Group of organisms of the same species living together in a given location
Biosphere
Pioneer Organism
Biotic Community
Population
35. Vegetation such as vines and eppiphytes
Tropical Rain Forest Plants
Thundra Animals
Dominant Species
Grassland Animals
36. Cannot synthesize their ow food and must depend upon autotrophs or others in the ecosystem to obtain their food
Climate and weather
Heterotrophs
Tropical Rain Forest Biome
Substratum-Minerals
37. Frozen area with no vegetation and terrestrial animals -animals that do inhabit polar regions generally live near the polar oceans
Other Cycles
Tropical Rain Forest Biome
Polar Region
Nature of Biomes
38. Organisms that manufacture their own food
Autotrophs
Material Cycles
Dentrified
Nitrogen Cycle 3
39. 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
Environment
Desert Biome
Grassland Biome
Taiga Animals
40. Vegetation has evolved adaptations for water conservation such as needle shaped leaves
Nekton
Temperate Coniferous Plants
Ecology
Obligatory
41. Live together in an intimate - often permanent association - which may or may not be beneficial to both participants
Substratum-pH
Ecology
Symbionts
Grassland Biome
42. Made into nitrites by chemosynthetic bacteria and then to usable nitrates by nitrifying bacteria
Ecological Succession
Competition Same Niche 2
Littoral Zone
Nitrified
43. Distinct community in a geographic region
Physical Environment-Temperature
Climate and weather
Biome
Biosphere
44. 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
Nitrogen Cycle 4
Nitrogen Cycle 3
Heterotrophs
Nitrogen
45. 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
Niche
Competition Same Niche 3
Temperate Deciduous Forest Plants
Tropical Rain Forest Animals
46. 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
Cohesive Force
Hypotonic
Substratum (soil/rock)
Physical Environment-Sunlight
47. The vegetation that becomes dominant and stable after years of evolutiionary development
Intertidal Zone Population
Coimax Vegetatioin
Symbionts
Nitrogen Cycle 4
48. Nitrates are absorbed by plants are used to syntheisze nucleic acids and plant proteins
Coimax Vegetatioin
Nitrogen Cycle 2
Poikilothermic (Cold Blooded)
Biotic Environment
49. Contains plankton - passively drifting masses of microscopic photosynthetic and heterotrophic organisms - and nekton - and algae
Tertiary Consumers
Desert animals
Marine Biomes
Photic Zone animals
50. Each member of a food chain uses some of the energy it obtains from its food for its own metabolism and loses some additional energy in the form of heat
Biotic Community
Food Web
Saprophytes
Pyramid of Energy