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CHAPTER 3 PLANTS Daily Vocabulary Scaffolding transpiration (3.1) (3.3) the movement of water vapor out of a plant and into the air tiny multicellular grains that contain the undeveloped sperm cells of a plant vascular system gymnosperm (3.1) (3.3) long tubelike tissues in plants through which water and nutrients move from one part of the plant to another a plant that produces seeds that are not enclosed in flowers or fruit seed angiosperm (3.3) (3.4) a plant embryo that is enclosed in a protective coating and has its own source of nutrients a plant that has flowers and produces seeds enclosed in fruit embryo flower (3.3) (3.4) a multicellular organism, plant or animal, in its earliest stages of development the reproductive structure of an angiosperm, containing male and female parts germination fruit (3.3) the beginning of growth of a new plant from a spore or a seed Copyright © by McDougal Littell, a division of Houghton Mifflin Company pollen (3.4) the ripened ovary of a flowering plant that contains the seeds