Seed Plants

Kelsey MorganBiology 6*

March 31,2010

Reproduction Free From Water

• Adaptations that allow seed plants to reproduce without water include flowers or cones, the transfer of sperm by pollination, and the protection of embryos in seeds.

Cones and Flowers

• The gametophytes of seed plants grow and mature within sporophyte structures called cones, which are the seed-bearing structures of gymnosperms.

• Flowers which are the seed-bearing structures of angiosperms.

Pollen and Seeds

• In seed plants, the entire male gametophyte is contained in a tiny structure called a pollen grain.

• The transfer of pollen from the male gametophyte to the female gametophyte is called pollination.

• A seed is an embryo of a plant that is encased in a protective covering and surrounded by a food supply.

• Seed coat surrounds and protects the embryo and keeps the contents of the seed from drying out.

Evolution Of Seed Plants

• The ancestors of seed plants evolved a variety of new adaptations that enabled them to survive in many places in which most mosses and ferns could not-from frigid mountains to scorching desserts.The most important of these adaptations was the seed.

Bibliography• www.photobucket.com• http://photobucket.com/images/moss/• http://photobucket.com/images/flowers/