Cocos nucifera - coconut

PitSeed Coat

Endosperm

No, this is the pit of a drupe Is this a fruit?Is this a nut?

No, part of the ovary wall is missing

Xanthium: cockleburGeorge de Mestral

croziervelvet

Victor Kiam

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

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

http

://w

ww

.trop

icam

ente

.it/i

mm

agin

i%20

sito

/C

AT

AL

OG

O/T

/The

obro

ma%

20ca

cao.

jpg

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

http://www.rz.uni-karlsruhe.de/~db50/FOTO_-_Archiv/Theobroma%20cacao%202.jpg

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

http

://w

ww

.myt

ho-f

leur

s.co

m/i

mag

es/f

leur

s_tr

opic

ales

/th

eobr

oma_

caca

o_fl

eurs

.JP

G

Ripe Fruit

chemical cause

The hormone______________ initiates the ripening response:ethylene

Unripe Fruit

physical condition

greenhardsour

mealyodorless

chlorophyllpectinacid

starchlarge orgs

chemical cause

redsoft

neutralsweet + juicy

odor

physical condition

anthocyaninless pectin

neutralsugar

small orgs

hydrolasepectinase

kinaseamylase

hydrolases

Enzyme Produced

H2C=CH2DNA

RNA

This same process initiated by ethylene…

…occurring in a… …causes…

…layer in a pedicel …fruit abscission

…leaf blade …leaf senescence

…leaf abscission…layer in a petiole

Since a carpel (ovary) is really a leaf…these parallel developmental events make a lot of common sense.

The Three Fundamental Parts…

…of a Seed

1. Seed Coat

2. Embryo

3. Storage Tissue

1. Leaf

2. Stem

3. Root

…of an Embryo

Growth of the shoot

Photosynthesis and Storage

Lifting the shoot above the soil

Producing lateral roots

Penetrating the soil

These functions…. …occur in this part of the embryo

Shoot apex

Cotyledon (leaf)

Hypocotyl (stem)

Radicle (root)

Root apex