Gymnosperms are a vascular plant that do have fruit or flowers. Bellringer Gymnosperms are a vascular plant that do have fruit or flowers. True or False

Seed Plants Chapter 4 Section 3

Characteristics of Seed Plants Two Stage Life Cycle Produce seeds They nourish and protect young sporophyte. Gametophytes do not live independently Form in sporophyte Sperm found in pollen Sperm do not need water to swim in to reach the eggs Can live almost anywhere

The Structure of Seeds Made of Three Parts Young plant Stored Food Sporophyte Stored Food Found in cotyledon (seed leaves) Seed Coat Protects the young plant

Gymnosperms Do not have flowers of fruit Seeds are protected by cone Four groups Conifers Ginkgoes Cycads Gnetophytes

Gymnosperms The Importance of Gymnosperms Economically important Resin Wood for building Resin Makes soap, turpentine, paint and ink Anticancer drug Anti-allergy drug

Gymnosperms Gymnosperm Life Cycle 1. Seed contains young sporophyte. Grows into an adult sporophyte 2. Spores are produced. Grow into gametophytes. 3. Sex cells are produced in cones. 4. Wind carries pollen to egg; sperm fertilizes egg 5. Fertilized egg develops into young sporophyte with seed

Angiosperms Produce flowers and fruit 235,000 species Found almost anywhere

Angiosperms Angiosperm Reproduction Flowers help with reproduction Pollination: Wind Animals Eat and dispose Carry burrs with fur

Angiosperms Two Kinds of Angiosperms 1. Monocot 2. Dicot Leaves with parallel veins Flower parts in threes Scattered vascular tissue One cotyledon Examples: grasses, orchids, lilies, palms 2. Dicot Leaves with branching veins Flower in parts of fours or fives Ring of vascular tissue Two cotyledons Examples: roses, cactuses, sunflowers, peanuts, peas

Angiosperms Importance of Angiosperms Food to animals Food crops Corn, wheat, rice Building material Oak trees Clothing and rope Cotton, flax Medicines Rubber Perfume/oils