D they contain proteins that function in pollen

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d. They contain proteins that function in pollen development. e. They exude from the open end of ovules. 16. Phylum Coniferophyta; p. 441; difficult; ans: a Which of the following statements about the embryogeny of pine is FALSE? a. Three types of polyembryony occur in most species. b. Four tiers of embryonic cells form at the lower end of the archegonium. c. Suspensor cells force the embryos through the wall of the archegonium. d. An embryo begins to develop from each of the four cells farthest from the micropyle. e. The integument develops into a seed coat. 17. Phylum Coniferophyta; p. 441; moderate; ans: b
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In a conifer seed, the three different generations are represented by the: a. integument, nucellus, and egg. b. seed coat, embryo, and food supply. c. seed coat, archegonium, and food supply. d. integument, ovule, and embryo. e. integument, megasporangium, and archegonium 18. Other Living Gymnosperm Phyla: Cycadophyta, Ginkgophyta, and Gnetophyta; p. 449; easy; ans: a Palmlike gymnosperms belong to the phylum: a. Cycadophyta. b. Coniferophyta. c. Ginkgophyta. d. Progymnospermophyta. e. Gnetophyta. 19. Other Living Gymnosperm Phyla: Cycadophyta, Ginkgophyta, and Gnetophyta; p. 449; easy; ans: d Which phylum is characterized by having coralloid roots? a. Progymnospermophyta b. Gnetophyta c. Ginkgophyta d. Cycadophyta e. Coniferophyta
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