cotyledon

Seed's first leaf

A cotyledon is the first leaf or one of the first pair of leaves that emerges from a germinating seed.

These embryonic leaves are often simpler and fleshier than the plant's later foliage, storing nutrients for early growth.

Flowering plants are classified by cotyledon count: monocots have one, dicots have two.

The bean's cotyledons pushed through the soil.

seedleaf

plumule

Embryonic plant shoot

monocotyledon · dicotyledon · seed leaves · food storage · protective covering

germination

sprouting

Seeds beginning growth

stratification · hypogeal · viability · seedling · swelling · establishment

botany

angiosperm

Plant producing flowers, fruits

flowering plant · embryology · plant anatomy · taxonomy · classification · morphology

anatomy

epidermis

Outermost tissue layer

chloroplast · stomata · cuticle · petiole · venation · protective layer

nutrition

photosynthesis

Light-to-sugar conversion in plants

Categories
Opposites
leaf developmental stage

cotyledontrue leaf

Mature photosynthetic organ

plant life stage structures

cotyledonflower

Plant's reproductive organ

fruit · seed · inflorescence

plant structural category

cotyledonroot

Underground absorbing structure

radicle · taproot

Family

cotyledons

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Used worldwide · Timeless · Concrete · Rated G