AGENDA Take out notebooks and outline from yesterday! Bell-Ringer: Plant Structures Plant Reproduction Notes/Video Complete Study Guide/Fix journals -Journals are due on FRIDAY Homework: Bring a leaf to class tomorrow! Exam/Journals due on FRIDAY!

Bellringer What vascular tissue is shown in the picture below? 2.How do you know this?

PLANTS SIMPLE TO COMPLEX MOSSFLOWERING PLANT

NON-VASCULAR PLANTS INCLUDES: MOSS LIVERWORTS HORNWORTS (first land plants) THEY LACK VASCULAR TISSUE THEY REPRODUCE BY SPORES (asexual structures, they do not make seeds) HAVE TO LIVE IN MOIST / WATERY AREAS

VASCULAR, SEEDLESS PLANTS INCLUDES: FERNS CLUB MOSS HORSETAILS THEY HAVE XYLEM AND PHLOEM THEY REPRODUCE BY SPORES These require water for reproduction Sorus- bundles of spores on the fern’s leaves

VASCULAR, SEED PLANTS There are two groups of vascular seed plants: Neither of these require water for reproduction GYMNOSPERMS “CONIFERS” ANGIOSPERMS “FLOWERING” Produce seeds that are not protected by an ovary Do NOT produce flowers or fruit Produce Cones Produce protected seeds ALL produce flowers and fruit Fruit is a ripened ovary with seeds in it

ANGIOSPERM A flower’s structure is genetically determined and usually made up of four kinds of organs: sepals, petals, stamens, and pistils. Petals Petals are usually the colorful structures at the top of a flower stem.

ANGIOSPERM Sepals are usually leaf-like and circle the below the petals.

ANGIOSPERM : The Male Reproductive Parts The male reproductive part of the flower includes the filament (tube) and anther (where the pollen is. Filament The entire male part is called the stamen. Anther Stamen

Section 24.2 Summary – pages Pistil ANGIOSPERM : The Female Reproductive Parts The pistil is the female organ of the flower. The bottom portion of the pistil is the ovary, a structure that contains ovules (eggs). Ovary Style Stigma

FERTILIZATION Pollen grain Stigma Style Ovary Egg cells As the seeds develop, the surrounding ovary enlarges and becomes the fruit.

Seeds have different ways of dispersing into the environment. How do the following disperse? Wind Water Consumption On fur

A Complete Flower Has Both Male and Female Parts Sepal Petal Ovary Style Stigma PistilPistil Anther Filament StamenStamen Encloses and Protects Bud Attracts pollinator Male part Female part Produces egg Produces pollen

Mature Pollen Grain Pollination and Fertilization in a Flower Tube Cell Nucleus Sperm Cells 1.pollen grains land on stigma Stigma Style Ovary 2.pollen tubes grow down stigma to ovary Sperm Egg 3A: Fusion of sperm + egg 3B: Fusion of 2 nd sperm + two polar nuclei 3.double fertilization Polar nuclei Ovule

Applying Your Knowledge A.Which one develops from the ovary wall? B.Which one produces pollen? C.Which one develops from a fertilized ovule? D.What is the name of the female part of the flower? 1.Seed 2.Fruit 3.Pistil 4.Anther 5.Pollen