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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. Affect the type of vegetation that can be supported






2. Animals that consume green plants (herbivores)






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






4. Have adaptations enabling them to survive in very cod water - with high pressures - and in complete darkness






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






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






7. 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






8. Deer - fox - woodchuck - and squirrel






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






10. Evolve toward a balance in which the predator is a regulatory influence on th prey but not a threat to its survival






11. Conserve water actively






12. Determines the nature of plant and animal life in the soil






13. Food chain is not a simple linear chain but an intricate web






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






15. The vegetation that becomes dominant and stable after years of evolutiionary development






16. One or both organisms can't survive without the other






17. The metabolically produced CO2 is released to the air. The rest of the orgnaic carbon remains locked whthin an organism until its death (except for wastes given off) - at which time decay processes by bacteria return the CO2 to the air






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






19. 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






20. Monkeys - lizards - snakes - and birds - floor is inhabited by saprophytes






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






22. Community in an ecological succession is identified by a dominant species






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






24. Plants growing on other plants - trees grow closely together; sunlight hardly reaches the forest floor






25. Consumer organisms that are higher in hte food chain are usually larger and heavier than those further down






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






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






28. 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






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






30. 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






31. 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






32. Include saprophytic organisms and organisms of decay






33. Animals that eat both plants and animals






34. Determined by the same decisive factors-temperatures and rainfall






35. First to resettle a virgin area






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






37. Rivers - lakes - ponds - and marshes






38. Links between oceans and land






39. Forest floors contain moss and lichens






40. Rhododendrons and pines are more suited for growth in acid oil






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






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






43. The ultimate source of energy for all organisms






44. Distinct community in a geographic region






45. 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






46. Lichens and moss






47. Any group of similar organisms that are capable of reproducing






48. 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






49. One that exerts control over the other species that are present






50. The major component of the internal environment of all living things







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