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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. Recycle water - oxygen - and phosphorus






2. 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






3. Animals that consume primary consumers (carnivores)






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






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






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






7. The stable - living part of the ecosystem in whicih populations exist in balance with each other and with the environment






8. Animals eat the plants and synthesize specific animal proteins form the plant proteins. both plants and animals give off wastes and eventually die






9. Deer - fox - woodchuck - and squirrel






10. Integrated system of species that are dependent upon one another for survival






11. Crawling and sessile organsms






12. When a parasite benefits at the expense of the host






13. Autotrophic green plants and chemosynthetic bacteria that use the energy of the sun and simple raw materials to manufacture carbohydrates - proteins - and lipids






14. Symbiotic relationship from which both organisms derive some benefit






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






16. One species may be competitively superior to the other and drive the second to extinction






17. Links between oceans and land






18. Forest floors contain moss and lichens






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






20. 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






21. Animals that eat both plants and animals






22. 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






23. Organisms that manufacture their own food






24. 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






25. Composed of populations that are able to exist under the new conditions






26. Ammonia (NH3) is broken down to release free nitrogen - which returns to the beginning of the denitrifying






27. Free-living organisms that feed on other living organisms






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






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






30. 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






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






32. Include reproduction and protection from predators and destructive weather






33. 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






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






35. Animals that consume green plants (herbivores)






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






37. Rivers - lakes - ponds - and marshes






38. Animals that feed on secondary consumer






39. Consists of populations of different plants and animal species interacting with each other in a given environment






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






41. Material is cycled and recycled betweenn organisms and their environments - passing from inorganic forms to organic forms and then back to the inorganic forms






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






43. Chief animal inhabitant is the moose; however - the black bear - wolf - and some birds






44. The study of interactions between organisms and their environment






45. Nitrates are absorbed by plants are used to syntheisze nucleic acids and plant proteins






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






47. Affect the type of vegetation that can be supported






48. The oceans






49. Include saprophytic organisms and organisms of decay






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