Transcript OMM Lesson 9 Sexual Reproduction in Flowering Plants

OMM Lesson 9
Sexual Reproduction
in Flowering Plants
Question:
What purpose do flowers serve?
Hypothesis:
“I believe flowers serve
as…because….”
Procedure:
 pages 108-110
Data - Inquiry 9.1
 Trace and label the picture on page
108
 Drawing #1 – “XXX – A Perfect Flower”
 Drawing #2 – “Male Reproductive
Structure – The Stamen”
 Drawing #3 – 3 Pollen Grains
 Drawing #4 – “XXX – Ovule”
Data Analysis:
 Why do you think some flowers have
so many pollen grains and ovules?
 Using “The Wonder of Flowering
Plants”, create a timeline of the events
that happen starting with pollination
and ending with fruit/seed production.
(hint: there are about 6 steps)
Conclusion:
 Go back and answer our
original question.
Inquiry 9.2 Pollination
 Procedure on p 111
 Pollinate your set of Wisconsin Fast
Plants by moving pollen from the anthers
to the stigma.
 Keep the “pollinator”
 Repeat the pollinating process for about
one week
Lesson 9 Word Wall
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Runners
Budding
Bulbs
Cuttings
Asexual reproduction
Sexual reproduction
Anther
Cross-pollinate
Diploid
Stigma
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Fertilization
Haploid
Perfect Flower
Imperfect Flower
Meiosis
Ovary
Ovule
Pollen
Pollination
Self-pollinate
Anther
Meiosis
Asexual reproduction Ovary
Budding
Ovule
Bulbs
Perfect Flower
Cross-pollinate
Pollen
Cuttings
Diploid
Pollination
Runners
Fertilization
Self-pollinate
Haploid
Sexual reproduction
Imperfect Flower
Stigma
Lesson 9 Word Wall
 Runners – Asexual reproduction found in
strawberries
 Budding – Asexual reproduction found in Hydra
and yeast
 Bulbs – Asexual reproduction found in tulips.
Bulbs can be split and replanted
 Cuttings – Asexual reproduction which grows a
new plant from a twig or limb placed in soil or
water
 Asexual reproduction – formation of new
individuals from 1 parent, without the union of
male and female sex cells
 Sexual reproduction – new organisms
are formed by the union of both male
and female sex cells
 Anther – male – produces the pollen
 Cross-pollinate – pollen moves from
one plant to another plant
 Diploid – cells contain the full set of
chromosomes (body cells = 46 in
humans)
 Stigma – female – sticky top of the pistil
 Fertilization – the union of the male sperm
(pollen in plants) and the female egg (ovule
in plants)
 Haploid – a cell that contains only half the
normal number of chromosomes (sex cells –
sperm/egg = 23 in humans)
 Perfect Flower – a flower that has both the
male and female reproductive structures
(pistil and stamen)
 Imperfect Flower – a flower that only has the
male or female reproductive structure
 Meiosis – the process responsible for sex
cell creation. It turns 1 diploid cell into 4
haploid cells.
 Ovary – female – produces the eggs
(ovules)
 Ovule – female - eggs
 Pollen – male - sperm
 Pollination – pollen from an anther comes
in contact with the sticky stigma of a pistil
 Self-pollinate – when pollen is transferred
to the stigma of a flower on the same plant