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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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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. Have cold winters - warm summers - and moderate rainfall -found in the Northeast and Central-Eastern United States and Central Europe
Desert animals
Hydrosphere
Nature of Biomes
Temperate Deciduous Forest Biome
2. 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
Lithosphere
Biotic Environment
Rootlike holdfasts
Tundra Plants
3. Ammonia (NH3) is broken down to release free nitrogen - which returns to the beginning of the denitrifying
Secondary Consumers
Tropical Rain Forest Biome
Nitrogen Cycle 4
Dentrified
4. Plants growing on other plants - trees grow closely together; sunlight hardly reaches the forest floor
Epiphytes
Temperate Deciduous Forest Plants
Aphotic Zone
Pelagic Zone
5. Region on the continental shelf that contains ocean area with depths up to 600 feet and extends several hundred miles from the shores
Carbon Cycle 3
Littoral Zone
Nitrogen Cycle 4
Mutualims
6. Algae - sponges - clams - snails - sea urchins - starfish - and crabs
Marine Biomes
Nitrogen
Intertidal Zone Population
Polar Region
7. 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
Decomposer
Carbon Cycle 2
Freshwater Biomes
Deep-sea Organisms
8. Includes climate - temperature - availability of light and water - and the local topology
Intertidal Zone
Osmoregulation
Abiotic (Physical) Environment
Substratum-Humus
9. Algae - crabs - crustacea - and many different species of fish
Grassland Animals
Substratum-pH
Littoral Zone Populations
Substratum (soil/rock)
10. Sunlit layer of the open sea extending to a depth of 250-600ft
Photic zone
Heterotrophs
Aphotic Zone animals
Environmental Factors
11. 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
Photic zone
Aphotic Zone
Taiga Biome
12. Composed of populations that are able to exist under the new conditions
Population
Saprophytes
Successive Communities
Desert animals
13. 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
Species
Physical Environment-Sunlight
Obligatory
Hypotonic
14. Used to include only the population and not their physical environment
Coimax Vegetatioin
Biotic Community
Food Web
Temperate Deciduous Forest Animals
15. Animals that feed on secondary consumer
Hydrosphere
Cohesive Force
Producers
Tertiary Consumers
16. Animals that consume only plants or plant foods
Herbivores
Biotic Environment
Taiga Animals
Aphotic Zone
17. First to resettle a virgin area
Ecological Succession
Carbon Cycle 1
Pioneer Organism
Obligatory
18. Two fates await the ammonia (NH3). some are nitrified or dentrified
Nitrogen Cycle 5
Parasitism
Poikilothermic (Cold Blooded)
Marine Biomes
19. Encompasses all that is external to the organism and is necessary for its existence
Marshes
Rootlike holdfasts
Pyramid of Energy
Environment
20. Integrated system of species that are dependent upon one another for survival
Population
Community
Desert Biome
Substratum-Minerals
21. 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
Mutualims
Grassland Biome
Nature of Biomes
Poikilothermic (Cold Blooded)
22. 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
Photic zone
Substratum-pH
Competition Same Niche 2
Autotrophs
23. Treeless - frozen plain found between the taiga lands and the northern ice sheets - very short summer and thus a very short growing season during which time the ground becomes wet and marshy
Herbivores
Carbon Cycle 2
Tundra Biome
Pyramid of Energy
24. 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
Nitrogen cycle 1
Population
Nitrogen Cycle 5
Carbon Cycle 1
25. Monkeys - lizards - snakes - and birds - floor is inhabited by saprophytes
Temperate Coniferous Plants
Temperate Deciduous Forest Animals
Nitrogen Cycle 5
Tropical Rain Forest Animals
26. Determine by the amount of decaying plant and animal life in the soil
Pyramid of Numbers
Material Cycles
Obligatory
Substratum-Humus
27. 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
Tundra Biome
Community
Carbon Cycle 3
Desert Biome
28. Region typical of the open seas and can be divided into photic and aphotic zones
Physical Environment-Sunlight
Nitrogen Cycle 2
Pelagic Zone
Substratum-Minerals
29. Animals that consume green plants (herbivores)
Temperate Deciduous Forest Plants
Biosphere
Photic Zone
Primary Consumers
30. Nitrates are absorbed by plants are used to syntheisze nucleic acids and plant proteins
Saprophytes
Nitrogen Cycle 2
Temperate Deciduous Forest Biome
Pelagic Zone
31. Vegetation has evolved adaptations for water conservation such as needle shaped leaves
Marine Biomes
Food Chain
Temperate Coniferous Plants
Littoral Zone
32. Made into nitrites by chemosynthetic bacteria and then to usable nitrates by nitrifying bacteria
Grassland Animals
Nitrogen Cycle 2
Nitrified
Nitrogen Cycle 4
33. Deer - fox - woodchuck - and squirrel
Temperate Deciduous Forest Animals
Food Chain
Hydrosphere
Epiphytes
34. Recycle water - oxygen - and phosphorus
Taiga Biome
Population
Intertidal Zone Population
Other Cycles
35. Individual unit of an ecological system - but the organism itself is composed of smaller units -organs >tissues >cells >molecules >atoms > subatomic particles
Organism
Carbon Cycle 2
Hypotonic
Photic Zone
36. Vegetation such as vines and eppiphytes
Niche
Successive Communities
Tropical Rain Forest Plants
Physical Environment-Temperature
37. Determined by the same decisive factors-temperatures and rainfall
Nature of Biomes
Herbivores
Substratum-pH
Food Pyramids
38. Includes all portions of the planet that support life -the atmosphere - the lithosphere - and the hydrosphere
Other Cycles
Temperate Coniferous Plants
Dentrified
Biosphere
39. The stable - living part of the ecosystem in whicih populations exist in balance with each other and with the environment
Sere
Primary Consumers
Climax Community
Substratum-Minerals
40. The major component of the internal environment of all living things
Freshwater Biomes
Autotrophs
Biotic Community
Physical Environment- Water
41. 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
Substratum-texture
Tundra Plants
Littoral Zone
Carnivores
42. When a parasite benefits at the expense of the host
Competition Same Niche 3
Nitrogen cycle 1
Parasitism
Biome
43. Free-living organisms that feed on other living organisms
Tertiary Consumers
Predators
Substratum-texture
Polar Region
44. Rivers - lakes - ponds - and marshes
Temperate Coniferous Plants
Carbon Cycle 3
Marshes
Freshwater Biomes
45. Material is cycled and recycled betweenn organisms and their environments - passing from inorganic forms to organic forms and then back to the inorganic forms
Aquatic Biomes
Nitrogen Cycle 5
Material Cycles
Autotrophs
46. 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
Taiga Biome
Temperate Deciduous Forest Animals
Tropical Rain Forest Animals
47. Needs constant energy source and cycling of materials between the living system
Conditions for stability in an Ecosystem
Competition Same Niche 2
Nitrogen Cycle 3
Biosphere
48. Distinct community in a geographic region
Temperate Deciduous Forest Plants
Desert Plants
Biome
Population
49. 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
Omnivores
Aquatic Biomes
Scavengers
50. Consumer organisms that are higher in hte food chain are usually larger and heavier than those further down
Environment
Ecological Succession
Competition Same Niche
Pyramid of Numbers
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