Lesson 4 Page

 What are the stages of a Plant Life Cycle?  How do plants Reproduce?

 Two Parts to Life Cycle 1. Sporophyte –spores or seeds are produced and grow into a gametophyte 2. Gametophyte- the plant produces two sex cells (sperm and egg)

Plant Reproduction Plant Life Cycle All plants go through two stages in their life cycle. Which are the sporophyte and gametophyte stages?

 Annuals  Complete life cycle in one growing season  Marigolds  Petunias  Biennials  Complete life cycle in two years  Parsley, Celery  Perennial  Live more than two years  Flower every year  Roses, azaleas, Hydrangea

 Plants do undergo sexual reproduction called fertilization  Fertilization- the process of male and female sex cells uniting.  Zygote – the fertilized cell

 Describe annuals, Perennials and biennials.

 Sexual  Parent produces a new seed pollen can be from multiple sources  Requires  Flowering Parts  Pollen  Seeds  Asexual  1 parent produces offspring identical to parent  New plants growing from roots or stems  Beneficial to scientist  Scientist can breed identical specimens

 Link Link  A technique use to copy plant with favorable characteristics fast  Read Apply it on page 113

HW: Read Section 4 pages

 Plants  Mosses, ferns, liverworts, hornworts, ferns and club moss  Steps of Reproduction  1. Plants release spores  2. Spores landing on moist ground grow into gametophytes  3.Gametophytes produce sperm and egg cells  4. The sperm must use moisture to swim to egg cell  link link

 Why is grafting important is it asexual or sexual reproduction?

 Link Link

Gymnosperm Reproduction Cycle Explain the steps of pollination and fertilization in the cycle. Plant Reproduction

 Pollination- When pollen from anther falls into stigma  By wind or animals  Why animals?  _____________________  Fertilization  Pollen joins with egg  Similar plans can fertilizes each other  Seed Dispersal  Fruits how?  __________________

 Use time to complete worksheet and turn in

Plant Reproduction Angiosperm Reproduction Reproduction in angiosperms begins with flowers.

Plant Reproduction Flower to Fruit What is the correct order of progression of flower to fruit?