Life Science Practice SR Questions

1. Life Science Practice SR Questions

2. Look at the food chain below to answer the following questions. grass grasshopper frog snake hawk 1. Use the food chain above to answer the following question. Which of the following is the prey of the snake? a. grasshopper b. frog c. fox d. hawk

3. Look at the food chain below to answer the following questions. grass grasshopper frog snake hawk 2. Using the food chain above, answer the following question. Which of the following animal is the predator of the snake? a. fly b. frog c. fox d. hawk

4. 3. Populations will increase or decrease depending upon changes in the environment. Which of the following situations would increase the deer population? • a. A drought, decreasing the food supply • A housing development being built • near the home range of the deer • A wet warm spring, increasing the • food supply • d. A longer deer hunting season

5. The balance of nature is very important. When a population either increases or decreases, it has an effect on other animals in the habitat. 4. If the population of insects greatly decreased in a pond habitat, what would be the effect on a frog population? a. The frog population would increase. b. The frog population would decrease. c. The frog population would stay the same. d. The frog population would become extinct.

6. 5. Food is the source of materials that all living things need to grow and survive. Which of the following does not happen to food in plants and animals? a. contributes to growth b. provides knowledge c. provides energy d. is stored for future use

7. 6. The sun is the source of energy for all living things. With this fact in mind, which list below best shows how energy moves in a food chain? a. grass cows humans sun b. sun grass cows humans c. sun humans cows grass d. cows grass sun humans

8. 7. Identify the role of a crab in the Chesapeake Bay. a. producer b. decomposer c. consumer d. scavenger

9. What is the role of a producer in a • food chain? • a. preys on animals • b. decays dead plants and animal • c. makes food • d. they have no role

10. 9. What is the role of a decomposer in a food chain? a. preys on animals b. decays dead plants and animal c. makes food d. they have no role

11. Chipmunk Population over a span of 4 years. 10. What is a possible change in the chipmunk’s habitat that had a harmful effect on the chipmunk population from year 1 to year 2? a. The amount of food increased. b. The amount of food decreased. c. The chipmunks had ample supply of water. d. The chipmunks had ample hiding places.

12. Chipmunk Population over a span of 4 years. 11. What is a possible change in the chipmunk’s habitat that had a beneficial effect on the chipmunk population from year 3 to year 4? a. A drought caused a shortage in their water supply. b. A forest fire destroyed trees in their habitat. c. The number of predators increased. d. The number of predators decreased.

13. A mother bluebird builds a nest and lays an egg. When the egg hatches, a baby bluebird is born. The baby bluebird looks just like its mother. In a few months the bluebird gets bigger and begins to sing like her. 12. Which of the following likenesses between the parent and offspring is learned? a. body shape b. beak shape c. feather color d. song singing

14. 13. Which of the following likenesses between the parent and offspring is the best example of an inherited trait? a. song singing b. food finding c. feather color d. escaping from predators

15. 14. A green tree frog lives in a forest. How does the frog's green color help it to survive? • a. By helping the frog find other frogs • b. By keeping the frog cool • By making the frog harder to see • when sitting on leaves • By allowing the frog to make its own • food

16. 15. Which is not a way that seeds are dispersed? a. sun b. animals c. water d. wind

17. 16. Look at the list of animals cows, deer, rabbits, grasshoppers, butterflies Which statement is true? a. They are producers. b. They are consumers. c. They are decomposers. d. They are scavengers.

18. A mother blacksnake has 6 offspring. 5 are born with the characteristic of black color and 1 has the characteristic of being an albino (all white). 17. The coloring of the black snakes gives them advantages that help them to survive and reproduce better than the albino snake. All of the following are advantages for the black snakes except - a. They can sneak-up on their prey better. b. They can see predators coming better. c. They can hide from predators more easily. d. They are more difficult to see in dim light.

19. 18. The primary source of energy for all living organisms is a. water b. sunlight c. plants d. air

20. 19. Which of the following food chains is correct? a. fox acorn mountain lion squirrel b. acorn fox squirrel mountain lion c. acorn squirrel fox mountain lion d. mountain lion fox squirrel acorn

21. 20. Sometimes changes in an organism’s habitat are beneficial and sometimes they are harmful. Three of the following are beneficial interactions that oysters in the Chesapeake Bay have with their environment. Which of the following is a harmful interaction for the oysters in the Chesapeake Bay? • a. making millions of eggs • b. being prey for starfish • c. filtering the water • providing shelter on their shells for other • animals

22. 21.Blue crabs live in the Chesapeake Bay. Which of the following best identifies their role within a food chain? a. scavengers b. producers c. consumers d. decomposers

23. 22. Which of the following are essential for all plants to grow and survive? a. light, nutrients, water b. water, fertilizer, humans c. roots, leaves, flowers

24. 23. In order to survive, all animals need a. roots, leaves, stems b. eyes, nose, ears c. light, soil, nutrients d. food, water, air

25. Producer Consumer Scavenger duck weed striped bass blue crab marsh grass duck algae 24. Which organism is placed in the wrong group? a. algae b. duck c. blue crab d. striped bass

26. 25. In certain environments some animals survive well, some less well, and some not at all. Which of the following organisms would not survive in the water of the Chesapeake bay? a. rock fish b. crab c. oyster d. rainbow trout

27. 26. Which bird beak would be most helpful for a bird that eats insects in the bark of trees to survive? a. A b. B c. C d. D

28. 27. Which of the following is the best example of an inherited likeness between parent and offspring? a. eye color b. language c. hunting ability d. using tools

29. 28. Certain organisms called decomposers are an important part of the natural world. They • create piles of waste as they clean • the environment. • b. allow oxygen to escape into the air. • c. enable nutrients to reenter the soil. • d. provide homes for other organisms.

30. 29. In the picture above, identify the primary source of energy. a. grass b. deer c. sun d. water

31. 30. Identify the role of the turtle in the ecosystem pictured above. a. producer b. consumer c. decomposer d. scavenger

32. 31. What is needed for all organisms to grow and survive? a. camouflage b. habitat c. parents d. source of energy

33. Honeybees In the Catoctin Mountains of Frederick County, Maryland, there are many apple orchards. In the spring, bees travel from apple blossom to apple blossom in search of nectar. They transfer pollen from one tree to another. This transfer of pollen fertilizes the plants and helps them to produce fruit. 32. The relationship between the honeybees and the apple trees is a. considered a harmful interaction. b. an observable behavior of a single-celled organism. c. considered a beneficial interaction. d. a learned behavior.

34. 33. Which of the following would be a beneficial change to the honeybees’ habitat? • a. new apple trees being planted. • b. honey bee population increasing. • increase in use of pesticides in apple • orchard. • d. introduction of a honeybee virus.

35. Cells All organisms are made of cells. A cell is the smallest living part of an organism. Some kinds of organisms, such as bacteria, are made of only one cell. That single cell is the organism’s entire body. Many other kinds of organisms, including elephants, trees, and people, are made of trillions of cells. The body of a many-celled organism is made of different kinds of cells. For example, many animals have bone cells, nerve cells, muscle cells, and blood cells. Plants have leaf cells and root cells. Each kind of cell in an organism performs a different function. • 34. From the information above, identify the statement that supports the need for specialized cells in multicellular organisms. • a. All organisms are made of cells. • Each kind of cell in an organism performs a different • function. • The body of a many-celled organism is made of different • kinds of cells. • d. A cell is the smallest living part of an organism.

36. 35. What structure is only found in a plant cell? a. vacuole b. cytoplasm c. cell membrane d. cell wall

37. Trait Inherited Learned Red Hair X Riding a Scooter X Blowing a Bubble X Brown Eyes X Reading a Book X 36. As you can see from the chart above, humans have some traits that are inherited from their parents and others that are learned. Animals also have some traits that are inherited and some that are learned. Which trait below would be learned for a horse? a. eye color b. hair color c. carrying a rider d. size

38. 37. A bird that dies eventually benefits a tree by providing it with a. carbohydrates b. minerals c. oxygen d. water

39. 38. Grasshoppers are eating a farmer’s crop. According to the food web, what might happen if the field were sprayed with insecticide (chemical used to kill insects) to kill the grasshoppers? There would be a. more food for frogs. b. more snakes. c. fewer crops. d. less food for hawks.

40. 39. Which of these organisms is a producer in the field habitat? A bird B butterfly C grass D mouse

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46. All four of these animals belongs to a different group. 45.

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48. Get Ready for the Answers

49. B • D • C • B • B • B • D • C • B • B • D • D • C • C • A 16. B 17. B 18. B 19. C 20. B 21. A 22. A 23. D 24. A 25. D 26. A 27. A 28. C 29. C 30. B 31. D 32. C 33. A 34. B 35. D 36. C 37. B 38. D