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. Adaptations for maintaining their internal osmolarity and conserving water






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






3. Animals that consume primary consumers (carnivores)






4. 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






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






6. 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






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






8. Animals that consume dead animals






9. Links between oceans and land






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






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






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






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






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






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






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






17. The study of interactions between organisms and their environment






18. 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






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






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






21. Include reproduction and protection from predators and destructive weather






22. Crawling and sessile organsms






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






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






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






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






27. Cold - dry - and inhabited by fir - pine - and spruce trees -much vegetation has evolved adaptations for water conservation such as needle-shaped leaves -Extreme Northern Part of the US and in Southern Canada






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






29. Elemental nitrogen is chemically inert and cannot be used by most organisms. Lightning and nitrogen-fixing bacteria in the roots of legumes change the nitrogen into the usable - soluble nitrates






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






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






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






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






35. Freshwater Biomes vs. Saltwater 1: Freshwater is _______________ which results in the passage of water into the cell. Freshwater organisms have homeostatic mechanisms to maintain water balance by the regular removal of the excess water. these include






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






37. Rock and soil surface






38. Animals that consume only plants or plant foods






39. 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






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






41. The oceans






42. Vegetation such as vines and eppiphytes






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






44. Nutrients - water - and sunlight limitations aid in maintaining populations at relatively constant levels






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






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






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






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






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






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







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