24.1 Reproduction in Flowering Plants

Q: What are flowers? A: Flowers are reproductive organs that are composed of four different kinds of specialized leaves: sepals, petals, stamen, & carpels

Sepal-encloses the bud before opening. Petal-attract insects. Found inside the sepal.

The Structure of Flowers Male Parts Stamen-contains anther & filament Anther-structure on which pollen grains are produced.

Female Parts Carpel-Innermost part of a flower that produces & shelters the female gametophytes. Contains: Stigma-Sticky part at the top of style; specialized to capture pollen. Pistil-Single carpel or several fused carpels; contains the ovary, style, & stigma. Ovules-Future seeds

Q: How does fertilization in angiosperms differ from fertilization in other plants? A: The process of fertilization in angiosperms is distinct from that found in other plants. Two fertilization events take place --one produces the zygote and the other a tissue, called endosperm within the seed.

Development of: Male Gametophytes Female Gametophytes

Pollination mostly by wind &animals Fertilization-zygote & endosperm.

Pollination & Fertilization Pollen from the male anther, sticks to the female stigma and goes down to the ovule. Fertilization occurs on the seed. http://www.natgeoeducationvideo.com/film/1133/reproduction-of-flowering-plants

WB pgs 379-380. Skip #21-24.