BY 124 SI 09/02/15 Raylan’s Session 2 has a comprehensive list of possible questions on Chapter 29, so go check it out. Also, her session 3 is the same, just on Chapter 30. With all those questions and information from my worksheets, that should be a lot of good practice. Memorize and understand Figure 30.2. Know all of the vocab and figures shown in class. Gymnosperm = “naked” seed. What are the characteristics and benefits of seed plants? Don’t get confused with the introduction of heterospores. Like before, spores will still develop into the gametophyte; however, these seed plants have two types of spores: micro and megaspores. Microspores give rise to the male gametophyte (which is enclosed in a pollen grain). Megaspores give rise to the female gametophyte (which is enclosed in an ovule). What is the opening of the ovule called? What are the advantages of seeds? Discuss pine life cycle (Figure 30.4). Know all terms and steps on the figure. Key thing to note: megasporangium usually only make 4 megaspores, and ONE of megaspores will survive to develop into the female gametophyte; whereas, microsporangium will make many, many microspores (which is why there’s so much pollen). In the figure, pollination occurs before the megasporocyte undergoes meiosis, and fertilization occurs after everything has developed. This can explain why the gymnosperm life cycle is so long (she said it’s 3 years long in class). What food supply does embryos in the gymnosperm seeds use? What is a fruit? Know vocab: stamen, filament, anther, carpel, stigma, style, ovary, petals, and sepals. What’s distinct about flower plants (angiosperms)? Discuss angiosperm life cycle (Figure 30.12). Note that the pollen grain consists of a generative cell and a tube cell. The generative cell will divide into 2 sperm cells (one will fertilize the egg and one will fertilize the central cell polar nuclei). Know that the seed consists of the embryo (2n), the endosperm (3n), and the seed coat (2n). What’s the food source of the embryo? What are the 3 basic plant organs? What are the 2 organ systems? Know the vocab for these organs: apical bud, node, internode, blade, petiole, axillary bud, taproot, and lateral roots. What are adventitious roots? Know some common modifications of stems, leaves, and roots. What are the 3 tissues that will make up the organs?