Bprovideahomeforsymbioticbacteria

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Unformatted text preview: true? A) Sexual reproduction creates an individual that is a genetic copy of one parent. B) Populations of organisms that reproduce through sexual reproduction generally have more difficulty adapting to changing environments. C) Sexual reproduction allows animals to expand their populations faster than asexual reproduction. D) Sexual reproductiongenerates greater genetic variation than asexual reproduction. 47. A decrease in ________ is followed by the gradual degradation of the corpus luteum. A) progesterone C) estrogen B) FSH D) LH 48. Which of the following options correctly represents the sequence in which most animals develop? A) zygote, cleavage, gastrula, blastula, organ formation B) cleavage, zygote, gastrula, blastula, organ formation C) zygote, cleavage, blastula, gastrula, organ formation D) zygote, cleavage, organ formation, blastula, gastrula 49. The brain of humans is strongly oriented toward the interpretation of A) smell. C) hearing. B) vision. D) touch. 50. Where is the organ of Corti? A) in the pinna C) in the middle ear B) in the Eustachian tube D) in the inner ear 3 4 BIO102 - FINAL EXAM 51. The chief function of root hairs is to A) decrease the anchoring power of roots. B) provide a home for symbiotic bacteria. C) provide a direct passageway from soil to cylinder. D) enlarge surface area for water and minerals absorption. 52. How does the sperm of an angiosperm reach egg? A) via the pollen tube that grows from the ovule to reach the pollen grain on the stigma B) via the pollen tube that grows from the pollen grain through the carpel tissues to the ovule C) usually via an insect, which places sperm in ovary D) by actively swimming down through the style to the egg 53. How do mineral ions get into the xylem cells of a plant root by way of the intracellular route? A) They percolate between root cells to the xylem and then enter a xylem vessel. B) They are actively taken in to the xylem of root hairs. C) They are taken up by root hair cells and transferred from cell to cell via plasmodesmata. D) They move in solution through cell walls of endodermis. 54. Legumes, such as beans or peas, A) fix N2 from the atmosphere in their leaves. B) form mycorrhizal associations to increase nitrogen C) form parasitic relationships with other photosynthetic plants. D) form mutualistic associations with nitrogen‐fixing bacteria. 55. One of the experiments in phototropism involved cutting off the tips of grass seedlings before exposing them to light from one side. The decapitated seedlings did not bend toward light. A valid conclusion from this experiment would be that A) plants cannot engage in photosynthesis without the tip of the plant. B) hormones are produced in all parts of the plant. C) a foil cover over the tip of the see...
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This document was uploaded on 03/30/2014.

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