leaf

Table of Contents

References & Edit History Related Topics

Images & Videos

How leaves are adapted to their environments

fishhook cactus

Slender pitcher plant

Why do some trees lose their leaves in autumn?

fern leaf anatomy and morphology

trees, deciduous and coniferous

leaf development

eudicotyledonous plant

Observe the opening of beech leaf buds

Explore the anatomy of a plant's mesophyll to understand how chlorophyll generates a green appearance

The video thumbnail image shows a green leaf with a rainbow graphic arcing towards it.

Learn how the layered arrangement of chlorophyll molecules within a leaf increases its photosynthetic output.

Understand how plants are infected by diseases through rainwater droplet splashing from leaf to leaf

Meet the tulip tree: More than just beautiful blooms

For Students

leaf: Related Content

Written and fact-checked by The Information Architects of Encyclopaedia Britannica

Last Updated: Jun 19, 2025

News •

New, Entry-Level EV Is Finally Coming to America • June 17, 2025, 3:47 AM ET (Newsweek)

Hundreds of farmers to open gates for Open Farm Sunday • June 7, 2025, 8:05 AM ET (BBC)

Photos and Videos

fishhook cactus

Slender pitcher plant

How leaves are adapted to their environments

Why do some trees lose their leaves in autumn?

Observe the opening of beech leaf buds

Explore the anatomy of a plant's mesophyll to understand how chlorophyll generates a green appearance

The video thumbnail image shows a green leaf with a rainbow graphic arcing towards it.

See All Videos and Images →

Topics

air space pinnate leaf compound leaf simple leaf neoformer preformer abscission layer lamina leaf base petiole stem

Dig Deeper: More Articles That Discuss This Topic