naked seeds
Xylem tracheiods - spindle shaped - creating soft woods (ex: pine spruce fir)
Male Pine Cone- Staminate (slide 20)
One year life cycle (pollen produced in May and June)
Female Pine Cone- Pistalle (slide 21)
Two Year Cycle
Female Pine Gametophyte - Seed (slide 23)
Pine Gamete (slide 22)
Examples in class:
pine pollen (in Jar) yellow pollen (powder)
Male staminate Strobili (in jar)
First Year Femaile cones (smaller) (in dishes) Second Year Female cone (larger) (in dishes)
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Examples :
plant Cycas revoluta
Male cones (Zamia)---------- Female cones (Zamia)
Examples in lab
Ginko Leaves
Ginko Seeds
Ephedra (in ricker mount)