Midterm Test - Life Science

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LIFE SCIENCE MIDTERM TEST Part 1: Choose the best answer 1. How many trophic levels does an omnivore feed on within an ecosystem? a. Omnivores feed at all trophic levels. b. 2 c. None, because the various trophic levels do not apply to omnivores. d. 3 2. What can an herbivore be categorized as? a. An autotroph b. A primary consumer c. A detritivore d. A producer 3. What is a decomposer? a. An organism that breaks down organic material b. An organism that feeds off of a living host c. An organism that treats bacterial infections d. None are correct e. An organism that uses newly recycled nutrients to grow 4. An association between two different species where the symbiont benefits and the host is harmed is known as: a. Symbiosis b. Parasitism c. Pathogenic d. Commensalism e. Amensalism

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5. When a bee gathers nectar from a certain type of flower to make honey and in the process pollinates the flower, what kind of relationship exists between the bee and the flower? a. Mutualistic b. Amensalistic c. Commensalistic d. Parasitic e. Serendipitous 6. What is the largest pool of carbon on the planet? a. Atmospheric carbon dioxide b. Biomass that makes up all living matter c. Sediments in the deep ocean d. Carbon dioxide dissolved in the oceans e. Fossil Fuels 7. What is the term used to describe the first species to colonize an area after a disturbance, and how do these species help recovery of the area? a. First species: They create favorable conditions for larger and less adaptable species. b. First arrivals: They create favorable conditions for larger and less adaptable species. c. Pioneer species: They create favorable conditions for larger and adaptable species. d. Pioneer species: They create unfavorable conditions for larger and more adaptable species. e. Pioneer species: They create favorable conditions for larger and less adaptable species. 8. After a glacier recedes, the moss and lichens that grow on the newly exposed rock surfaces are called what? a. A climax community b. A pioneer community c. A succession community d. Glacier followers e. A transitional community

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9. What is a taiga biome? a. A biome characterized by open grassland and a temperate climate. b. A biome characterized by vast marshes. c. A biome characterized by extremely cold temperatures and a complete absence of plant growth. d. A biome characterized by forests composed of evergreen conifers. e. A biome characterized by extremely cold environments with very short growing seasons that can barely support small plant growth. 10. In which of the following biomes would you expect to find a complete absence of plant life. a. extreme desert b. desert c. chaparral d. tundra e. taiga 11. On a total net basis, which biome is the most productive? a. Coral Reefs b. Savanna c. Open Ocean d. Estuaries e. Tropical Rainforests 12. What types of animals can be found in freshwater biomes? a. Fish b. Land animals c. Amphibians d. All of these answers are correct. e. Birds

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13. On the following diagram, which number indicates where DNA is located? a. 3 b. 1 c. 2 d. 4 e. 5 14. Which of the following is true about chlorophyll? a. Exists in the stroma b. Absorbs specific light wavelengths c. Is broken down into a food source d. It is a protein 15. What color of visible light does chlorophyll reflect? a. Red b. Green c. Violet d. Blue

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16. Which of the following is a reactant of photosynthesis and a product of cellular respiration? a. glucose b. oxygen c. light energy d. carbon dioxide 17. Looking through a microscope at a drop of pond water, you see a unicellular organism with a nucleus and chloroplasts. It is most likely a(n): a. Protophyta b. Protozoa c. Archaebacteria d. Fungus-like protist e. Bacteria 18. Which of the following is not a characteristic of all three types of protists? a. Mostly unicellular b. Eukaryotic c. Mostly aquatic d. Contain a nucleus e. Heterotrophic 19. When evaluating both algae and plants, which characteristics are distinguishable between the two? a. Plants grow on land, while algae only grows in the ocean. b. Plants perform photosynthesis, while algae do not. c. Plant cells differentiate into tissues, while algae cells do not. d. Plants are eukaryotic, while algae are prokaryotic. e. Plant cells have a nucleus, while algae cells do not.

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20. Algal blooms are dangerous to humans because _____. a. fish eat the algae and grow too large to catch. b. they are thick mats that boats cannot drive through. c. they die and sink to the bottom, filling in natural waterways. d. they block the light, preventing photosynthesis. e. they can release large amounts of toxins into drinking water. 21. Which of the following is NOT a main group of protozoa? a. Paramecium b. Amoebas c. Flagellates d. Sporozoans 22. Which of the following describes fungi? a. Eukaryotic phototrophs with no cell walls b. Prokaryotic nonphototrophs with rigid cell walls c. Prokaryotic phototrophs with no cell walls d. Eukaryotic nonphototrophs with rigid cell walls e. Eukaryotic phototrophs with rigid cell walls 23. Which best describes yeast? a. A rapidly growing fungus that produces spores asexually b. A single-celled fungus that reproduces sexually c. A fungus that is in symbiosis with plant roots d. A fungus that is in symbiosis with algae e. A single-celled fungus that reproduces asexually

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24. Which of the following is not a characteristic of all animals? a. Heterotrophic b. Multicellular c. Ability to move d. Eukaryotic cells e. Cell wall 25. Which of the following correctly pairs the classification of back bone with the animal given? a. Invertebrate: Whale b. Invertebrate: Butterfly c. Vertebrate: Starfish d. Invertebrate: Shark e. Vertebrate: Snail 26. Humans are animals which are best classified as: a. Mobile b. Reptiles c. Invertebrates d. Amphibians e. Mammals 27. Mollusks are _____, which means they don't have backbones. a. vertebrates b. mammals c. invertebrates d. hermaphrodites

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28. Which of the following is a segmented worm? a. flatworm b. earthworm c. planaria worm d. round worm 29. This type of arthropod is found in the water and includes shrimp, crabs and lobster. a. Arachnida b. Crustaceans c. Mollusks d. Cephalopods 30. The bodies of all arthropods are _____. a. solid b. supported by a spine c. flat d. segmented

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Part 2: For the food web, label each organism: (Some may have more than one label) P = producer | 1 = Primary Consumer | 2= Secondary Consumer | 3 = Tertiary Consumer | | 4 Quartenary Consumer

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Part 3: Fill in the sheet The Six Kingdoms Graphic Organizer Kingdom: Archaea Eubacteria Protists Fungi Plants Animals Domain: Archaea Bacteria Eukarya Eukarya Eukarya Eukarya Cell Wall? Cell wall w/o Cell wall w/ Cell wall Cell wall Some, made NO cell Made of? peptidoglyca peptidoglyca made of made of of cellulose wall n n chitin cellulose Food: Heterotroph All All Heterotroph, All three (41) s and heterotroph (42) heterotroph autotroph, or autotrophs s s chemotroph? Reproduction Asexual- Asexual- : Sexual, Mostly using binary using binary Both Both (43) asexual, or sexual fission fission both? Complexity: Most are All Unicellular, All (44) Both multicellula multicellula (45) multicellular unicellular r r or both? Nucleus? Prokaryote or Prokaryote Prokaryote (46) Eukaryote Eukaryote Eukaryote Eukaryote?