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Name_____________________________________Date______________Hour______ Bio 134 Ch. 21 Introduction to Plants p. 604-621 21.1 Plant Evolutions and Adaptations Main idea Plant Evolution What evidence is there that present-day plants and present-day green algae have common ancestry? Plant Adaptations to Land Environments 1. Cuticle 2. Stomata 3. Vascular tissues Vascular plants Nonvascular plants Name 2 functions of vascular tissues: 1 2 Reproductive strategies What is the limiting factor in the reproduction of plants? seed Draw a sketch of a seed and label the following parts: Embryo Seed coat nutrients Alteration of Generations What is an alteration of generations? Plant Classification How many plant divisions are there? 21.2 Nonvascular Plants Main idea What must be present in order for all nonvascular plants to reproduce? Diversity of Nonvascular Plants Name 2 characteristics of nonvascular plants: 1 2 3 Division bryophyta Name 2 characteristics of these: 1 2 example Division Anthocerophyta What can be found in the spaces around the chloroplasts? example Division Hepaticophyta How are these classified? example 21.3 Seedless Vascular Plants main idea Diversity of Seedless Vascular Plants Strobilus Division Lycophyta Example: Epiphyte Division Pterophyta Example: Rhizome sporangium Sorus 21.4 Vascular Seed Plants main idea Diverstiy of Seed Plants Cotyledons Name four adaptations for dispersal of seeds by seed plants: 1 2 3 4 Division Cycadophyta Cones What is the natural habitat for cycad plants? Division Gnetophyta How long can members of this division live? Division Ginkgophyta Describe the leaves of the Ginkgo biloba. Division Coniferophyta What are the reproductive structures of conifers? Name 2 adaptations seen in conifers: 1 2 Division Anthophyta How are anhophytes (flowering plants) classified? Annual Biennial perennial