Genetics and Ecosystems Review

1. Review Test 5-1

2. 1. Which of these human traits is least likely inherited from patents? • height(short or tall) • Quality of diet (good or poor) • Gender(male or female) • Hair color(light or dark)

3. B. Quality of diet (good or poor)

4. 2. White fur is a recessive trait in a particular mammal. If two of the white mammals mate, their offspring will most likely be- • 50% black and 50% white • 100% gray • 100% white • 100% black

5. c. 100% white

6. KeyHair color: B= brown b= blondeEye color: B= brown b= blueHair type : C= curly c= straight 3. What are the chances that these two parents will produce an offspring with blue eyes? • 25 % • 50 % • 75 % • 100 %

7. B. 50 %

8. KeyHair color: B= brown b= blondeEye color: B= brown b= blueHair type : C= curly c= straight 4. Which of these describes the physical traits of the mother? • Blonde hair; blue eyes; straight hair • Brown hair; brown eyes; curly hair • Brown hair; blue eyes; straight hair • Blonde hair; brown eyes; straight hair

9. D. Blonde hair; brown eyes; straight hair

10. 5. If the grass is removed from the food web, which of these will be first to change in population? • Fox • Rabbit • All of the above • None of the above

11. B. Rabbit

12. 6. Bacteria in a food web is important to the ecosystem because they- • Provide energy for the producers to make food. • Help recycle the materials that make up the other organisms. • Provide energy for the consumers to survive. • Help the water cycle to keep working.

13. B. Help recycle the materials that make up the other organisms.

14. 7. A student makes several observations while studying cows. Which of the following observed characteristics is controlled by the genetic coed found in the DNA of the cows? • Cow birds eat bugs near the cows. • All of the cows avoided poison oak. • All of the cows have four legs. • The cows move toward the barn as the sun goes down.

15. C. All of the cows have four legs.

16. 8. Which of the following produces most of the carbon dioxide gas in the aquarium system? • Fish • Plants • Water • rocks

17. A. Fish

18. 9.The carrying capacity of an ecosystem is least dependent on the amount of available- • Rocks and minerals • Energy • Food and water • nutrients

19. A. Rocks and minerals

20. 10. The best example of carrying capacity is- A. The maximum weight a person can carry B. Storing food for winter C. The maximum number of a population that a habitat can support D. Lifting food and carrying it to another habitat.

21. C. The maximum number of a population that a habitat can support.

22. 11. A likely reason for an increase in a deer population is- • The development of a housing subdivision in the deer habitat. • Several years of drought. • Competition with other animals that eat grass and shrubs. • A decrease in the number of natural predators of the deer.

23. D. A decrease in the number of natural predators of the deer.

24. 12. Which process below uses carbon dioxide and the sun’s radiant energy to produce chemical energy? • Evaporation • Photosynthesis • Respiration • Decomposition

25. B. Photosynthesis

26. 13.

27. C. Glucose

28. 14. Which cell is only found in animal cells and used during cell division? • Cytoplasm • Centrioles • Vacuoles • Cell wall

29. B. Centrioles

30. 15. What cell component stores chlorophyll ? • Chloroplast • Cytoplasm • Nucleus • Ribosome

31. A. Chloroplast