Science 7 (recovered).docx

BREAKTHROUGH CHRISTIAN ACADEMY 9006 Eagle St., Are 3, Sitio Veterans, Brgy. Bagong Silangan, Quezon City

GRADE 7 science 2nd periodic EXAMINATION NAME: ____________________________________________________ TEACHER: ____________________________________________________

SCORE: _____________ DATE: _____________

TEST I. DIRECTION: Identify the letter of the correct answer. _____ 1. The spores that fungus like protists produce: a. Grow into new organisms b. Produce slime on which the protest can move c. Break down food for the protest d. Form pseudopods _____ 2. The threadlike structures that make up the bodies of multicellular fungi are called a. Hyphae b. Nuclei c. Mold d. Cell walls _____ 3. What do fungi have in common with animals? a. They are autotrophs c. They have cell walls b. They are heterotrophs d. They use spores to reproduce _____ 4. A fungus that is a parasite might feed on: a. A person’s skin b. a dead tree c. bread

d. wet bathroom

_____ 5. What do yeast cells use as a food source in bread making and winemaking? a. Sugar b. salt c. carbon dioxide d. alcohol _____ 6. Like animals, animal-like protists are: a. Autotrophs b. heterotrophs

c. unicellular

_____ 7. Where would fungi NOT likely thrive? a. Forest floor b. wet bathroom tiles

d. prokaryotes

c. damp tree barks

d. desert

_____ 8. Which structures allow sarcodines such as amoebas to move? a. Cilia b. contractile vacuoles c. flagella d. pseudopods _____ 9. What characteristic do fungi share? a. They are all prokaryotes b. They are all eukaryotes

c. They are all autotrophs d. They are all multicellular

_____ 10. What bacteria-killing fungus did Fleming isolate in his 1928 experiment? a. Rhizopus b. corn smut c. wheat rust d. Penicillium _____ 11. How many parents are involved in budding and regeneration? a. one b. two c. three d. zero _____ 12. What kind of reproduction uses pollen? a. fission b. asexual c. sexual

d. budding

_____ 13. What kind of reproduction involves only one parent plant? a. pollination c. fertilization b. sexual d. asexual _____ 14. What is a group of living things that come from one parent and are identical to the parent? a. a clone b. a child c. a puppy d. a kitten _____ 15. What kind of reproduction forms new plants that are not identical to their parents? a. asexual b. sexual c. runners d. rhizomes

_____ 16. A scientist observes a parent organism with its offspring. The color of the offspring is different from that of the parent. How do these organisms MOST LIKELY reproduce? a. budding b. asexual reproduction

c. sexual reproduction d. propagation

_____ 17. Which of the following may happen during asexual reproduction? a. a plant produces seeds. b. an embryo develops inside an egg. c. a fruit develops around the plant’s ovary. d. a new organism begins to form on a parent organism. _____ 18. Which structure is the direct RESULT of sexual reproduction? a. cone b. flower c. seed d. spore _____ 19. Which of these is true about asexual reproduction? a. Only plants use asexual reproduction. b. All organisms use asexual reproduction. c. There are at least two parent organisms in asexual reproduction. d. There is only one parent organism in asexual reproduction _____ 20. Which of the following occurs only during sexual reproduction? a. Fertilization c. Spore production b. Fruiting bodies d. Budding _____ 21. Which of the following symbiotic relationships is considered parasitic? a. ticks feeding on a dog b. bees transporting pollen from flowers c. pilot fish swimming under sharks d. birds eating the insects from the back of a hippopotamus _____ 22. What does symbiosis mean? a. living separately, no relationship between 2 species b. living together, close relationship between 2 species c. both a and b d. neither a nor b _____ 23. Ants and acacia trees have a mutualistic relationship because a. they benefit each other. b. they are part of the same ecosystem. c. they are both adapted to a humid climate. d. the ants eat part of the acacia tree. _____ 24. Which of the following is a symbiotic relationship where one partner benefits and the other does not benefit or lose from the relationship? a. commensalism b. mutualism c. parasitism d. decomposition

_____ 25. What type of relationship is shown in the picture above? a. mutualism b. predation c. parasitism d. commensalisms _____ 26. An ecosystem possesses: a. only living components b. only non-living components c. both living and non-living components d. none of the above _____ 27. Which one of the following types of consumers could be a herbivore? a. Carnivore b. Producer c. Primary consumer d. Secondary consumer _____ 28. Which one of the following statements about food chains is false? a. The energy transfer in an ecosystem always ends with the Sun and producers b. At each step in a food chain, less energy is available to the next consumer c. Food chains show how energy and matter flow from one biotic element to another d. Food chains show how energy is transferred in an ecosystem _____ 29. Which part of a food chain absorbs the Sun's light and heat? a. Producers b. Omnivores c. Consumers Herbivores

_____ 30. Which one of the following organisms is most likely to be at the top of a food pyramid? a. Grasshopper

b. Owl

c. Rabbit

d. Wheat

TEST II. DIRECTION: Identify whether the given component is Biotic or Abiotic

_______________ 1. Worm

_______________ 6. Soil

_______________ 2. Hawk

_______________ 7. Bacteria

_______________ 3. Sunlight

_______________ 8. Water

_______________ 4. Grasshopper

_______________ 9. Minerals

_______________ 5. Air

_______________ 10. Man

TEST III: DIRECTION: Label the parts of the plant

Answer key 1. A 2. A 3. B 4. A 5. D 6. B 7. D 8. D 9. B 10. B

11. A 12. C 13. D 14. A 15. B 16. C 17. D 18. D 19. D 20 . a

21. A 22. B 23. A 24. A 25. C 26. C 27. C 28. A 29. A 30. B

1. Biotic 2. Biotic 3. Abiotic 4. Biotic 5. Abiotic 6. Abiotic 7. Biotic 8. Abiotic 9. abiotic 10. Biotic

a. ovule b. ovary c. style d. stigma e. pistil f. anther g. stamen h. filament i. sepal j. petal