Test your basic knowledge |

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. First to resettle a virgin area






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






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






4. Without a constant input of energy from the sun - an ecosystem would soon run down - as food is transferred from one level of the food chain to the next - a transfer of energy occurs






5. Rock and soil surface






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






7. Region typical of the open seas and can be divided into photic and aphotic zones






8. The oceans






9. Recycle water - oxygen - and phosphorus






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






11. The ultimate source of energy for all organisms






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






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






14. 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






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






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






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






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






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






20. Include saprophytic organisms and organisms of decay






21. 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






22. Individual unit of an ecological system - but the organism itself is composed of smaller units -organs >tissues >cells >molecules >atoms > subatomic particles






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






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






25. Two fates await the ammonia (NH3). some are nitrified or dentrified






26. The study of interactions between organisms and their environment






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






28. Vegetation such as vines and eppiphytes






29. Determines water holding capacity






30. 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






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






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






34. Animals that consume only plants or plant foods






35. Active swimmers such as fish - sharks - or whales that feed on plankton and smaller fish






36. Include reproduction and protection from predators and destructive weather






37. Animals that feed on secondary consumer






38. 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






39. Algae - crabs - crustacea - and many different species of fish






40. Polar bears - musk oxen - and arctic hens






41. 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






42. Includes the community and the environment and usually all five kingdoms






43. When one organism is benefited by the association and the other is not affected






44. Crawling and sessile organsms






45. 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






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






47. Developed long legs and many are hoofed






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






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






50. Encompasses all that is external to the organism and is necessary for its existence