Leaf

Leaf

A leaf is an organ of a vascular plant and is the principal lateral appendage of the stem.<ref>,

 Anatomy of seed plants, 
  
 Wiley, 
  
  
  
 ISBN 978-0-471-24520-9,</ref> The leaves and stem together form the shoot.<ref>, 
  
 Plant anatomy, 
  
 Pergamon, 
  
  
  
 ISBN 978-0-08-036983-8,</ref> Leaves are collectively referred to as foliage, as in "autumn foliage".<ref>

Foliage(link). {{{website}}}. Merriam-Webster Dictionary.

Accessed 2018-04-18.

</ref>

Structure

A typical leaf or phyllode has a broad expanded blade (also called the lamina), which is attached to the plant stem by a petiole.<ref>,

 Anatomy of seed plants, 
  
 Wiley, 
  
  
  
 ISBN 978-0-471-24520-9,</ref>

Function

Leaves are the site where most photosynthesis takes place in plants.<ref>,

 Plant Physiology and Development, 
  
 Sinauer, 
  
  
  
 ISBN 978-1-60535-255-8,</ref>

Types of leaves

There are many different types of leaves. They can be classified in many different ways, including by their shape, their edge, their pattern of venation, and by their arrangement on the stem.<ref>,

 The Cambridge Illustrated Glossary of Botanical Terms, 
  
 Cambridge University Press, 
  
  
  
 ISBN 978-0-521-79401-5,</ref>

See also

• Photosynthesis
• Plant stem
• Vascular plant
• Foliage

References

<references />

External links

• Britannica Leaf

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