Biology Chapter 12-3

Biology Chapter 12-3 - 1 Chapter 12 Section 3 Seed Plants...

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Section 3 Seed Plants Two types of vascular plants that produce seeds are: gymnosperms angiosperms Gymnosperms are trees and shrubs that do not have flowers or fruit. Angiosperms have flowers and seeds that are produced by fruit. Characteristics of Seed Plants Seed plants produce seeds. Seeds nourish and protect young sporophytes. Gametophytes of seed plants are tiny Gametophytes form within the reproductive structures of the sporophyte. Sperm of seed plants form inside pollen. Pollen is transported by wind or animals. Structure of Seeds A seed forms after fertilization. Fertilization occurs when sperm and egg are joined. A seed is made of 3 parts: young plant called the sporophyte embryo stored food in cotyledon seed coat that surrounds and protects seed. Advantage of Seed Plants Over Seedless stored food in seed spread easily by animals Gymnosperms Seed plants that do not have flowers or fruit. Seeds usually protected by a cone.
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This note was uploaded on 12/15/2011 for the course BIO BSC1010 taught by Professor Gwenhauner during the Fall '10 term at Broward College.

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Biology Chapter 12-3 - 1 Chapter 12 Section 3 Seed Plants...

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