01 Exam 3 Key - BIO311D - Exam 3 Introductory Biology II J....

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BIO311D - Exam 3 Introductory Biology II J. Moon, Spring 2011 Name: ________________________________________ EID:_________________ Select the best answer for the following questions and fill in the corresponding bubble on the answer sheet in PENCIL. Please answer the short answer and essay questions directly on your exam in PEN (if you wish to be considered for regrade-ing). Take a deep breath – and Good Luck!! Multiple Choice (2pts each) 1. You are studying a plant from arid west Texas. Which of the following adaptations is least likely to have evolved in response to water shortages? A) closing the stomata during the hottest time of the day B) development of large leaf surfaces to absorb water C) formation of a fibrous root system spread over a large area D) a thick waxy cuticle on the epidermis 2. As we move from seedless nonvascular to seedless vascular to seeded vascular plants, what trend arises in the evolution of land plants? A) reduction of the gametophyte phase of the life cycle B) decrease in the size of the leaf C) elimination of sperm cells or sperm nuclei D) increasing reliance on water to bring sperm and egg together 3. What is the result of a double fertilization in angiosperms? A) The endosperm develops into a diploid nutrient tissue. B) A triploid zygote is formed. C) Both a diploid embryo and triploid endosperm are formed. D) Two embryos develop in every seed. E) Both A and B 4. Which structure is NOT CORRECTLY paired with its tissue system? A) palisade parenchyma-ground tissue B) guard cell-dermal tissue C) companion cell-ground tissue D) tracheid-vascular tissue 5. Imagine a plant growing in a dense forest. Which of the following would be a likely adaptation to increase exposure to sunlight? A) apical dominance B) closing of the stomata C) lateral buds D) absence of petioles 6. When you eat grapes, what part of the plant are you actually consuming? A) immature flowers B) secondary meristems C) storage roots D) ovaries 1
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BIO311D - Exam 3 Introductory Biology II J. Moon, Spring 2011 7. Plants and Bryophytes share many characteristics, except: A) multicellularity. B) specialized cells and tissues. C) lignified vascular tissue. D) a reduced, dependent sporophyte. 8. The most immediate potential benefits of introducing genetically modified crops include A) increasing the amount of land suitable for agriculture. B) overcoming genetic incompatibility. C) increasing the frequency of self-pollination. D) increasing crop yield. 9. The ________ are water-conducting cells of xylem, have thick walls, and are dead at functional maturity? A) sieve-tube elements and companion cells B) cork cambium and vascular cambium C) tracheids and vessel elements D) collenchyma cells 10. Almost all organisms on Earth have a Circadian Clock, even some bacteria! What is the greatest asset the circadian clock affords? A) it allows all developmental events to occur within 24 hours
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01 Exam 3 Key - BIO311D - Exam 3 Introductory Biology II J....

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