1. Pit Seed Coat Endosperm Is this a fruit?
No, part of the ovary wall is missing
Is this a nut?
No, this is the pit of a drupe
Cocos nucifera - coconut
Pit
Seed
Coat
Endosperm

2. Xanthium: cocklebur
George de Mestral
velvet
crozier
Victor Kiam

3. The maple fruit is both a samara and a schizocarp.
Ovary wall develops a wing
Ovary splits for dispersal

4. http://www. tropicamente

5. ethylene
The hormone______________ initiates the ripening response:
H2C=CH2
Unripe Fruit
Ripe Fruit
chemical cause
DNA
RNA
physical condition
chemical cause
Enzyme Produced
physical condition
green
hard
sour
mealy
odorless
chlorophyll
hydrolase
anthocyanin
red
pectin
pectinase
less pectin
soft
acid
kinase
neutral
neutral
starch
amylase
sugar
sweet + juicy
large orgs
hydrolases
small orgs
odor

6. This same process initiated by ethylene…
…occurring in a…
…causes…
…layer in a pedicel
…fruit abscission
…leaf blade
…leaf senescence
…layer in a petiole
…leaf abscission
Since a carpel (ovary) is really a leaf…these parallel developmental events make a lot of common sense.

7. …of an Embryo The Three Fundamental Parts… …of a Seed Leaf Seed Coat
Stem
Root
Seed Coat
Embryo
Storage Tissue

8. …occur in this part of the embryo
These functions….
…occur in this part of the embryo
Growth of the shoot
Shoot apex
Photosynthesis and Storage
Cotyledon (leaf)
Lifting the shoot above the soil
Hypocotyl (stem)
Producing lateral roots
Radicle (root)
Penetrating the soil
Root apex