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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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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. Any group of similar organisms that are capable of reproducing
Tundra Plants
Carnivores
Primary Consumers
Species
2. Organisms that manufacture their own food
Rootlike holdfasts
Aphotic Zone
Autotrophs
Competition Same Niche
3. Nitrates are absorbed by plants are used to syntheisze nucleic acids and plant proteins
Competition Same Niche 2
Rootlike holdfasts
Nitrogen Cycle 2
Pelagic Zone
4. 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
Temperate Coniferous Forest Biome
Nitrogen Cycle 4
Nitrogen Cycle 5
Predators
5. Ammonia (NH3) is broken down to release free nitrogen - which returns to the beginning of the denitrifying
Tropical Rain Forest Plants
Competition Same Niche 2
Dentrified
Carnivores
6. The major component of the internal environment of all living things
Substratum-Humus
Environmental Factors
Aphotic Zone
Physical Environment- Water
7. Nekton and benthos - scavengers - and predators (fiercely competitive)
Photic Zone
Aphotic Zone animals
Intertidal Zone Population
Predator-Prey relationship
8. 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
Nitrified
Carbon Cycle 1
Photic Zone
9. Animals that consume primary consumers (carnivores)
Secondary Consumers
Tundra Biome
Decomposer
Desert Biome
10. One species may be competitively superior to the other and drive the second to extinction
Tropical Rain Forest Plants
Substratum-pH
Competition Same Niche
Intraspecific Interactions
11. In the ocean - the top layer thorugh which light can penetrate - is where all aquatic photosynthetic activity takes place
Tundra Biome
Marine Biomes
Organism
Photic Zone
12. An essential component of amino acids and nucleic acids - which are the building blocks of all living things
Nitrogen
Primary Consumers
Aphotic Zone
Nature of Biomes
13. Body temperature is very close to that of their surroundings -as temperature rises - these organisms become more active
Cohesive Force
Poikilothermic (Cold Blooded)
Physical Environment-Temperature
Predators
14. Distinct community in a geographic region
Biome
Intertidal Zone Population
Poikilothermic (Cold Blooded)
Polar Region
15. Used to include only the population and not their physical environment
Conditions for stability in an Ecosystem
Pyramid of Numbers
Temperate Coniferous Plants
Biotic Community
16. Consists of populations of different plants and animal species interacting with each other in a given environment
Environment
Nitrogen Cycle 4
Carbon Cycle 1
Communities
17. Includes the community and the environment and usually all five kingdoms
Herbivores
Pyramid of Numbers
Competition Same Niche 3
Ecosystem
18. Region on the continental shelf that contains ocean area with depths up to 600 feet and extends several hundred miles from the shores
Poikilothermic (Cold Blooded)
Carbon Cycle 3
Temperate Coniferous Forest Biome
Littoral Zone
19. One or both organisms can't survive without the other
Competition
Temperate Deciduous Forest Biome
Niche
Obligatory
20. Animals that consume only plants or plant foods
Conditions for stability in an Ecosystem
Nitrified
Tropical Rain Forest Animals
Herbivores
21. The study of interactions between organisms and their environment
Marshes
Grassland Animals
Pyramid of Energy
Ecology
22. Include reproduction and protection from predators and destructive weather
Benthos
Cohesive Force
Other Cycles
Substratum-Minerals
23. Rhododendrons and pines are more suited for growth in acid oil
Cohesive Force
Substratum-pH
Biome
Nitrogen Cycle 5
24. Vegetation has evolved adaptations for water conservation such as needle shaped leaves
Taiga Biome
Freshwater Biomes
Coimax Vegetatioin
Temperate Coniferous Plants
25. Algae - sponges - clams - snails - sea urchins - starfish - and crabs
Obligatory
Intertidal Zone Population
Tropical Rain Forest Biome
Littoral Zone Populations
26. Energy is transferred from the original sources in green plants through a series o organisms with repeated stages of consumption and finally decomposition
Nitrogen cycle 1
Physical Environment-Temperature
Food Chain
Conditions for stability in an Ecosystem
27. Nutrients - water - and sunlight limitations aid in maintaining populations at relatively constant levels
Secondary Consumers
Scavengers
Environmental Factors
Nitrogen
28. 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
Taiga Animals
Population
Producers
29. Algae - crabs - crustacea - and many different species of fish
Competition Same Niche
Littoral Zone Populations
Competition Same Niche 2
Temperate Coniferous Forest Biome
30. 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
Saprophytes
Carnivores
Pelagic Zone
Aquatic Biomes
31. 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
Competition
Benthos
Predator-Prey relationship
Nitrogen cycle 1
32. Animals that consume dead animals
Nature of Biomes
Scavengers
Poikilothermic (Cold Blooded)
Hemeothermic (Warm Blooded)
33. Evolved physical mechanisms that allow them to make Use of the heat produced as a consequence of respiratiion
Hemeothermic (Warm Blooded)
Parasitism
Symbionts
Successive Communities
34. Determines water holding capacity
Desert Biome
Substratum-texture
Pyramid of Energy
Freshwater Biomes
35. The ultimate source of energy for all organisms
Food Pyramids
Biotic Community
Physical Environment-Sunlight
Abiotic (Physical) Environment
36. Deer - fox - woodchuck - and squirrel
Competition
Temperate Deciduous Forest Animals
Photic Zone animals
Polar Region
37. 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
Desert Biome
Substratum-texture
Substratum-Minerals
38. Evolve toward a balance in which the predator is a regulatory influence on th prey but not a threat to its survival
Desert Biome
Other Cycles
Biome
Predator-Prey relationship
39. Consumer organisms that are higher in hte food chain are usually larger and heavier than those further down
Nitrogen
Freshwater Biomes
Pyramid of Numbers
Tertiary Consumers
40. Live in burrows had few birds and mammals are found except those which have developed adaptations for maintaining constant body temperatures
Saprophytes
Predators
Desert animals
Nitrogen
41. Live together in an intimate - often permanent association - which may or may not be beneficial to both participants
Symbionts
Temperate Deciduous Forest Animals
Poikilothermic (Cold Blooded)
Photic Zone animals
42. Active swimmers such as fish - sharks - or whales that feed on plankton and smaller fish
Nekton
Deep-sea Organisms
Polar Region
Aquatic Biomes
43. 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
Symbionts
Environment
Dentrified
Pyramid of Energy
44. Polar bears - musk oxen - and arctic hens
Thundra Animals
Substratum-texture
Intraspecific Interactions
Tropical Rain Forest Biome
45. Lichens and moss
Other Cycles
Temperate Coniferous Forest Biome
Aphotic Zone
Tundra Plants
46. Vegetation such as vines and eppiphytes
Predators
Tropical Rain Forest Plants
Herbivores
Marshes
47. First to resettle a virgin area
Pioneer Organism
Epiphytes
Competition
Parasitism
48. Food chain is not a simple linear chain but an intricate web
Food Web
Intertidal Zone
Thundra Animals
Coimax Vegetatioin
49. Monkeys - lizards - snakes - and birds - floor is inhabited by saprophytes
Tropical Rain Forest Animals
Tropical Rain Forest Biome
Sere
Organism
50. Encompasses all that is external to the organism and is necessary for its existence
Physical Environment- Water
Tropical Rain Forest Plants
Environment
Ecology
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