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
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
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?
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? __________________