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Epidermis strip with resin duct in a pine needle


3  sclerenchym
resin duct
5  chlorenchym
2  epidermis

English name: Pine
Scientific name: Pinus sp.
Familia: Pinaceae
Classis: Coniferopsida
Phylum: Gymnospermae
Regnum: Plantae

Needles of pine have small epidermis cells. However, these have a thick wall and a very thick cuticle that contains cutin. The needle contains resin ducts that are surrounded by sclerenchyma. The resin serves as protection against predators.

last modified: 5 Jun 2014