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PCAT Biology Ecology

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. Includes climate - temperature - availability of light and water - and the local topology






2. Deer - fox - woodchuck - and squirrel






3. Developed long legs and many are hoofed






4. Group of organisms of the same species living together in a given location






5. The oceans






6. Energy is transferred from the original sources in green plants through a series o organisms with repeated stages of consumption and finally decomposition






7. Used to include only the population and not their physical environment






8. Conserve water actively






9. Animals that feed on secondary consumer






10. Contains plankton - passively drifting masses of microscopic photosynthetic and heterotrophic organisms - and nekton - and algae






11. Regiong beneatht he photic zone that receives no light






12. Determines water holding capacity






13. 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






14. Must be maintained at an optimal level -organisms have adaptations necessary for protection against extremes






15. Algae - sponges - clams - snails - sea urchins - starfish - and crabs






16. Every energy transfer involves a loss of energy and each level of the food chain uses some of the energy it obtains from the food for its own metabolism and loses some additional energy in the form of heat






17. Made into nitrites by chemosynthetic bacteria and then to usable nitrates by nitrifying bacteria






18. Body temperature is very close to that of their surroundings -as temperature rises - these organisms become more active






19. Forest floors contain moss and lichens






20. (living) includes all living things that directly or indirectly influence the life of the organism including the relationships that exist between organisms






21. Crawling and sessile organsms






22. Sunlit layer of the open sea extending to a depth of 250-600ft






23. Animals that consume only plants or plant foods






24. Vegetation such as vines and eppiphytes






25. An essential component of amino acids and nucleic acids - which are the building blocks of all living things






26. Recycle water - oxygen - and phosphorus






27. 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






28. More than 70% of earth -plants have little controlling influence in communities -most stable ecosystems; the conditions affecting temperature - amount of available oxygen and cabon dioxide - and amount of suspended or dissolve materials are very stab






29. Live in burrows had few birds and mammals are found except those which have developed adaptations for maintaining constant body temperatures






30. Include reproduction and protection from predators and destructive weather






31. 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






32. Needs constant energy source and cycling of materials between the living system






33. Jungles characterized by high temperatures and torrential rains -found in Central Africa - Central America - the Amazon basic - and Southeast Asia






34. Evolved physical mechanisms that allow them to make Use of the heat produced as a consequence of respiratiion






35. 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






36. Have cold winters - warm summers - and moderate rainfall -found in the Northeast and Central-Eastern United States and Central Europe






37. Rivers - lakes - ponds - and marshes






38. Determine by the amount of decaying plant and animal life in the soil






39. Includes all portions of the planet that support life -the atmosphere - the lithosphere - and the hydrosphere






40. The orderly process by which one biotic community replaces or succeeds another until a climax community is established






41. Trees such as beech - maple - oaks - and willows shed their leaves during cold winters months






42. 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






43. Oceans connect to form one continuous body of water - which controls the earth's temperature by absorbing solar heat






44. Vegetation has evolved adaptations for water conservation such as needle shaped leaves






45. Lichens and moss






46. 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






47. Live together in an intimate - often permanent association - which may or may not be beneficial to both participants






48. Region on the continental shelf that contains ocean area with depths up to 600 feet and extends several hundred miles from the shores






49. 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






50. Frozen area with no vegetation and terrestrial animals -animals that do inhabit polar regions generally live near the polar oceans