SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
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. Determined by the same decisive factors-temperatures and rainfall
Nature of Biomes
Thundra Animals
Food Pyramids
Competition Same Niche
2. 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
Osmoregulation
Species
Taiga Biome
Biotic Environment
3. Body temperature is very close to that of their surroundings -as temperature rises - these organisms become more active
Tropical Rain Forest Animals
Species
Primary Consumers
Poikilothermic (Cold Blooded)
4. Only animal life and other heterotrophic life exists
Niche
Lithosphere
Nature of Biomes
Aphotic Zone
5. Crawling and sessile organsms
Hydrosphere
Taiga Biome
Benthos
Population
6. Determines water holding capacity
Nitrogen Cycle 5
Competition Same Niche
Intraspecific Interactions
Substratum-texture
7. Rhododendrons and pines are more suited for growth in acid oil
Epiphytes
Substratum-pH
Abiotic (Physical) Environment
Hemeothermic (Warm Blooded)
8. First to resettle a virgin area
Substratum-texture
Intraspecific Interactions
Pioneer Organism
Physical Environment- Water
9. 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
Littoral Zone Populations
Intertidal Zone
Species
Carbon Cycle 2
10. Affect the type of vegetation that can be supported
Competition
Marine Biomes
Food Web
Substratum-Minerals
11. The major component of the internal environment of all living things
Sere
Physical Environment- Water
Desert Plants
Grassland Biome
12. 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
Symbionts
Saprophytes
Substratum-Minerals
Nitrogen cycle 1
13. Conserve water actively
Aquatic Biomes
Tertiary Consumers
Sere
Desert Plants
14. Animals that feed on secondary consumer
Substratum-texture
Tertiary Consumers
Temperate Coniferous Plants
Aphotic Zone animals
15. 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
Saprophytes
Substratum-Humus
Intraspecific Interactions
Carnivores
16. Contains plankton - passively drifting masses of microscopic photosynthetic and heterotrophic organisms - and nekton - and algae
Intertidal Zone
Photic Zone animals
Marshes
Temperate Deciduous Forest Biome
17. Rivers - lakes - ponds - and marshes
Marine Biomes
Epiphytes
Freshwater Biomes
Autotrophs
18. Integrated system of species that are dependent upon one another for survival
Dominant Species
Littoral Zone
Community
Secondary Consumers
19. The oceans
Aquatic Biomes
Hydrosphere
Obligatory
Nitrogen Cycle 4
20. Live together in an intimate - often permanent association - which may or may not be beneficial to both participants
Freshwater Biomes
Symbionts
Environment
Tropical Rain Forest Plants
21. Group of organisms of the same species living together in a given location
Population
Hypotonic
Pyramid of Numbers
Substratum-pH
22. Nutrients - water - and sunlight limitations aid in maintaining populations at relatively constant levels
Environmental Factors
Mutualims
Pyramid of Mass
Rootlike holdfasts
23. 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
Nitrogen
Predators
Rootlike holdfasts
Biotic Environment
24. Distinct community in a geographic region
Taiga Biome
Hydrosphere
Littoral Zone
Biome
25. Autotrophic green plants and chemosynthetic bacteria that use the energy of the sun and simple raw materials to manufacture carbohydrates - proteins - and lipids
Desert Biome
Autotrophs
Producers
Substratum-texture
26. Material is cycled and recycled betweenn organisms and their environments - passing from inorganic forms to organic forms and then back to the inorganic forms
Nekton
Grassland Animals
Material Cycles
Pyramid of Energy
27. Lichens and moss
Competition Same Niche 2
Tundra Plants
Physical Environment- Water
Food Pyramids
28. Animals eat the plants and synthesize specific animal proteins form the plant proteins. both plants and animals give off wastes and eventually die
Nitrogen Cycle 3
Tundra Plants
Climate and weather
Substratum (soil/rock)
29. 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
Scavengers
Environmental Factors
Climate and weather
Tropical Rain Forest Animals
30. Free-living organisms that feed on other living organisms
Desert Biome
Predators
Communities
Secondary Consumers
31. Organisms that manufacture their own food
Pyramid of Mass
Autotrophs
Mutualims
Aquatic Biomes
32. Regiong beneatht he photic zone that receives no light
Ecological Succession
Aphotic Zone
Abiotic (Physical) Environment
Pyramid of Mass
33. Forest floors contain moss and lichens
Pioneer Organism
Food Chain
Second Law of Thermodynamics
Taiga Plants
34. Animals that consume only plants or plant foods
Substratum-texture
Tundra Plants
Biome
Herbivores
35. Includes the community and the environment and usually all five kingdoms
Substratum-Humus
Hypotonic
Ecosystem
Symbionts
36. Evolved physical mechanisms that allow them to make Use of the heat produced as a consequence of respiratiion
Hemeothermic (Warm Blooded)
Nitrogen cycle 1
Symbionts
Taiga Animals
37. 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
Taiga Animals
Carbon Cycle 2
Nitrogen Cycle 4
Nitrogen Cycle 5
38. Rock and soil surface
Saprophytes
Biotic Environment
Lithosphere
Biotic Community
39. Sunlit layer of the open sea extending to a depth of 250-600ft
Photic zone
Substratum-pH
Nitrogen Cycle 5
Mutualims
40. 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
Scavengers
Hypotonic
Competition
Tropical Rain Forest Biome
41. Food chain is not a simple linear chain but an intricate web
Species
Food Web
Herbivores
Physical Environment-Temperature
42. 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
Decomposer
Benthos
Mutualims
Competition Same Niche 2
43. Nitrates are absorbed by plants are used to syntheisze nucleic acids and plant proteins
Hypotonic
Aphotic Zone
Tundra Plants
Nitrogen Cycle 2
44. 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
Biotic Environment
Dominant Species
Niche
Temperate Deciduous Forest Biome
45. Vegetation such as vines and eppiphytes
Second Law of Thermodynamics
Biotic Environment
Nature of Biomes
Tropical Rain Forest Plants
46. Determine by the amount of decaying plant and animal life in the soil
Primary Consumers
Substratum-Humus
Carbon Cycle 3
Carbon Cycle 1
47. Chief animal inhabitant is the moose; however - the black bear - wolf - and some birds
Taiga Animals
Mutualims
Tertiary Consumers
Decomposer
48. Algae - sponges - clams - snails - sea urchins - starfish - and crabs
Intertidal Zone Population
Herbivores
Osmoregulation
Community
49. Used to include only the population and not their physical environment
Pyramid of Numbers
Biotic Community
Tropical Rain Forest Biome
Pyramid of Mass
50. Without a constant input of energy from the sun - an ecosystem would soon run down - as food is transferred from one level of the food chain to the next - a transfer of energy occurs
Food Pyramids
Competition Same Niche 3
Polar Region
Herbivores
Can you answer 50 questions in 15 minutes?
Let me suggest you:
Browse all subjects
Browse all tests
Most popular tests
Major Subjects
Tests & Exams
AP
CLEP
DSST
GRE
SAT
GMAT
Certifications
CISSP go to https://www.isc2.org/
PMP
ITIL
RHCE
MCTS
More...
IT Skills
Android Programming
Data Modeling
Objective C Programming
Basic Python Programming
Adobe Illustrator
More...
Business Skills
Advertising Techniques
Business Accounting Basics
Business Strategy
Human Resource Management
Marketing Basics
More...
Soft Skills
Body Language
People Skills
Public Speaking
Persuasion
Job Hunting And Resumes
More...
Vocabulary
GRE Vocab
SAT Vocab
TOEFL Essential Vocab
Basic English Words For All
Global Words You Should Know
Business English
More...
Languages
AP German Vocab
AP Latin Vocab
SAT Subject Test: French
Italian Survival
Norwegian Survival
More...
Engineering
Audio Engineering
Computer Science Engineering
Aerospace Engineering
Chemical Engineering
Structural Engineering
More...
Health Sciences
Basic Nursing Skills
Health Science Language Fundamentals
Veterinary Technology Medical Language
Cardiology
Clinical Surgery
More...
English
Grammar Fundamentals
Literary And Rhetorical Vocab
Elements Of Style Vocab
Introduction To English Major
Complete Advanced Sentences
Literature
Homonyms
More...
Math
Algebra Formulas
Basic Arithmetic: Measurements
Metric Conversions
Geometric Properties
Important Math Facts
Number Sense Vocab
Business Math
More...
Other Major Subjects
Science
Economics
History
Law
Performing-arts
Cooking
Logic & Reasoning
Trivia
Browse all subjects
Browse all tests
Most popular tests