Life Cycles Today we will observe life cycles through a flower dissection…our goal is to see how...
-
Upload
augustus-paul -
Category
Documents
-
view
215 -
download
1
Transcript of Life Cycles Today we will observe life cycles through a flower dissection…our goal is to see how...
Life CyclesToday we will observe life cycles through a
flower dissection…our goal is to see how the structure of the flower aids in the function of
reproduction!
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.QuickTime™ and a
TIFF (Uncompressed) decompressorare needed to see this picture.
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Basic Life Cycle of A Sexual Organism
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Plants have sex too!
• Flower--Reproductive organ
• Perfect flowers have male and female parts
• Anther and Filament--Male
• Stigma and ovary--female
• What are the petals for?
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Do plants reproduce asexually too?
• Potatoes
• Why did this lead to the potato famine?
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
When is sex important?
• In times of stress• Mixes up genes and
comes up with new (maybe better) combinations!
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
What are we going to figure out today?
• What mechanisms plants have to ensure cross-pollination?– Timing
– Structure of reproductive parts
• We will do this by– Looking at old and new
flowers
– Compare lengths of male and female parts
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.