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Principles of Life Sciences Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

Page 1

Question 1 1. What part of the root system protects the root apex?

Question 2 2. Which of the following organisms is a primary consumer of a prickly pear cactus?

Question 3 3. An allele is _____.

Question 4 4. ___ is the process of converting sunlight into chemical energy.

Question 5 5. What is the female part of the plant?

Page 2

Question 6 6.

Which of the following is an example of a homologous structure or trait?

I. Arm bones of a human and wings of a bird

II. Wing of a penguin and wing of a mosquito

III. Beak of a penguin and beak of a duck

Question 7 7. Which of these best describes a biological community?

Question 8 8. An organism's habitat is also called its

Question 9 9. What is the main function of the circulatory system?

Question 10 10. Which of the following is an example of convergent evolution?

Page 3

Question 11 11.

Which of the following statements is true?

I. The one thousandth base pair on chromosome one of an organism is an example of a locus.

II. Changing the DNA in a gene by one base pair could create a new allele.

III. Cells in a diploid organism possess two copies of each homolog (except gametes).

Question 12 12. Which statement correctly describes what photosynthesis accomplishes?

Question 13 13. What do flowers do?

Question 14 14. About how much of Earth's surface is covered with water?

Question 15 15.

Which of the following is an example of analogous structures or traits?

I. Leg bones of a human and leg bones of a penguin

II. Wing of a penguin and wing of a mosquito

III. Beak of a penguin and beak of a duck

Page 4

Question 16 16. Which of the following is a biotic feature of an ecosystem?

Question 17 17. What is the role of the pigment molecules in photosynthesis?

Question 18 18. What are the main parts of the immune system?

Question 19 19. Which of the following is true about air?

Question 20 20. How does the respiratory system relate to the circulatory system?

Page 5

Question 21 21. A new mutation allows a cheetah to run faster and hunt down more prey than its slower counterparts. This mutation increased the _____ of the cheetah.

Question 22 22. Which of the following is NOT an example of a phenotype?

Question 23 23. Which of the following is the correct equation for photosynthesis?

Question 24 24. How many trophic levels does an omnivore feed on within an ecosystem?

Question 25 25. In a polar ecosystem, which of these are most likely to compete for food?

Page 6

Question 26 26. Asexual reproduction

Question 27 27. Which is the largest terrestrial ecosystem found on Earth?

Question 28 28. What are the two main classifications of ecosystems?

Question 29 29. In a typical ecosystem, what percentage of the energy produced by the autotrophs then consumed by the primary consumers will be passed along to the secondary consumers?

Question 30 30. What can an herbivore be categorized as?

Principles of Life Sciences Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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