Caryopsis a one seeded dry fruit o embryo leaves

Caryopsis: a one-seeded, dry fruit
o Embryo - leaves
 Cotyledon – seed leaf
 Monocot has one (aka scutellum)
 Scutellum – one seed leaf
 It remains where the seed is placed
 Coleoptile: protective leaf; it emerges
from soil (Coleo means protect)
o Embryo – stem
 Epicotyl – portion of stem above the
cotyledon
 No stem tissue below the cotyledonary
node (node marks division between stem
and root)

03-130, Plant Science Seed Anatomy Lab page 3
o Embryo – root
 Radicle: embryonic root, Forms the
primary root upon germination
 Coleorhiza: sheath protecting tip of
primary root
 Rhiza –root
o Stored Food
 Endosperm serves as nutrient source for
developing seedling
 Aleurone: outermost layer of the
endosperm

03-130, Plant Science Seed Anatomy Lab page 4
o Protective Covering
 Fruit wall has fused to the seed coat in a
caryopsis
 Pericarp: ovary (fruit) wall
 Clear coat
 Hypogeal Emergence (Monocot)
o Cotyledon – stays in the same spot; underground
 Epigeal emergence (dicot)
o Cotyledon rises with plant
o Hypocotal arch brings the cotyledon up out of
ground
 Key Seed Anatomy terms for Exam 1

03-130, Plant Science Seed Anatomy Lab page 5
 Embryo
o Cotyledon
o Cotyledonary node
o Plumule
o Epicotyl
o Hypocotyul
 Food storage
o Cotyledon
o Endoperm
 Covering
o Seed coat
o Pericarp
 Emergence
o Epigeal
o hypogeal