Chapter 22 - Chapter 22 Early Development of the Plant Body...

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Chapter 22: Early Development of the Plant Body Multiple-Choice Questions 1. Introduction; p. 497; moderate; ans: b A plant’s body plan consists of a(n) ______ and a(n) ______ pattern. a. apical-radial; basal b. apical-basal; radial c. basal-radial; apical d. apical; basal e. radial; apical 2. Formation of the Embryo; p. 497; moderate; ans: c When the zygote first divides, the two daughter cells are the ______ cell and the ______ cell. a. micropylar; chalazal b. root; shoot c. apical; basal d. proembryo; suspensor e. axis; proembryo 3. Formation of the Embryo; p. 497; moderate; ans: e Located at the micropylar pole of the embryo is the: a. apical cell. b. embryo proper. c. proembryo. d. protoderm. e. basal cell. 4. Formation of the Embryo; pp. 497–498; difficult; ans: b Which of the following statements about the polarity of an embryo is FALSE? a. It fixes the structural axis of the body. b. It is established only after the zygote has divided. c. It is essential to the development of all higher organisms. d. It refers to the condition in which one end is different from the other end. e. It is a key component of biological pattern formation. 5. Formation of the Embryo; p. 498; difficult; ans: a Which of following lists the correct developmental sequence in eudicots, where I is the globular stage; II, the heart stage; III, the proembryo; IV, the torpedo stage; and V, the zygote? a. V, III, I, II, IV b. I, V, IV, II, III c. III, V, II, IV, I d. V, I, III, II, IV e. V, III, II, I, IV
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2 Chapter 22 Early Development of the Plant Body 6. Formation of the Embryo; p. 498; easy; ans: d Which primary meristem forms first? a. Shoot apical meristem b. Root apical meristem c. Ground meristem d. Protoderm e. Procambium 7. Formation of the Embryo; p. 498; moderate; ans: d The procambium is the precursor of the: a. epidermis. b. ground tissues. c. protoderm. d. xylem and phloem. e. primary meristems. 8. Formation of the Embryo; p. 498; moderate; ans: c In embryogenesis in monocots, globular embryos next become: a. two-lobed. b. curved. c. cylindrical. d. heart-shaped. e. spherical. 9. Formation of the Embryo; p. 498; moderate; ans: d The root and shoot apical meristems first become discernible during the transition between the ______ and ______. a. proembryo; globular stage b. torpedo stage; proembryo c. heart stage; globular stage d. globular stage; torpedo stage e. torpedo stage; embryo proper 10. Formation of the Embryo; p. 498; moderate; ans: e Where does the shoot apical meristem arise in eudicot and magnoliid embryos? a. At the tip of a sheathlike extension b. At the tip of a cotyledon c. On one side of the single cotyledon d. On one side of the two cotyledons e. Between the two cotyledons
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Chapter 22 Early Development of the Plant Body 3 11. Formation of the Embryo; p. 499; moderate; ans: d Normal development of the ______ prevents formation of extra embryos by the ______. a. embryo proper; apical meristems b. primary meristems; embryo proper c. suspensor; apical meristems d. embryo proper; suspensor e. suspensor; embryo proper 12. Formation of the Embryo; p. 499; difficult; ans: c During embryogenesis in Arabidopsis, mutants with the twn mutation: a. form no viable embryos.
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  • Fall '12
  • Fertuck
  • Plants, Embryo, adult plant

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