The amino group at C-2 bears a fatty acid in amide linkage.

The fatty acid is usually saturated or monounsaturated, with 16, 18, 22, or 24 carbon atoms.

Ceramide is the parent compound for this group.

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#XL - T Zoology

The amino group at C-2 bears a fatty acid in amide linkage.

The fatty acid is usually saturated or monounsaturated, with 16, 18, 22, or 24 carbon atoms.

Ceramide is the parent compound for this group.

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#XL - R Botany

When gametophytes are retained within original spore case “Endosporic”

eg:  Selaginella, Isoetes, Marsilea

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When gametophytes grow upon the soil and form independent plants “Exosporic”

eg: Psilotum, Pteris, Lycopodium

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Classification of peteridophytes

PSILOPHYΤΑ (WISK FERNS)

Eg: Psilotum

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Classification of peteridophytes

II.LYCOPODOΡΗΥΤΑ (CLUB MOSSES)

Eg: Lycopodium, Selaginella

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Classification of peteridophytes

III.EQUISETOPHYTA (HORSE TAILS)

 Eg: Equisetum

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Classification of peteridophytes

IV.  Filicophyta(Ferns)