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






2. Animals that consume primary consumers (carnivores)






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






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






5. 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






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






7. Animals that eat both plants and animals






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






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






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






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






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






13. 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






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






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






16. Rock and soil surface






17. Symbiotic relationship from which both organisms derive some benefit






18. 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






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






20. Lichens and moss






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






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






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






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






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






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






27. Affect the type of vegetation that can be supported






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






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






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






31. Conserve water actively






32. The chief disruptive force






33. Animals that consume dead animals






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






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






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






37. Developed long legs and many are hoofed






38. Adaptations for maintaining their internal osmolarity and conserving water






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






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






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






42. 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






43. In the ocean - the top layer thorugh which light can penetrate - is where all aquatic photosynthetic activity takes place






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






45. 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






46. Only animal life and other heterotrophic life exists






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






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






49. Nekton and benthos - scavengers - and predators (fiercely competitive)






50. 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







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


Let me suggest you:

Browse all subjects

Browse all tests

Most popular tests



Major Subjects

Tests & Exams


AP
CLEP
DSST
GRE
SAT
GMAT

Browse all subjects

Browse all tests

Most popular tests