|Small ones,|Large ones,|One |Few |male. |female. |antheridium, |archegonia, |Developed |Developed |much larger |in apex |into small |while |than the |of oval, |prothallial|still in |single |colorless, |cell, and |sporangium |prothallial |female |antherid |and |cell. |prothallium, |cell while |dependent |Antheridium |each with |in |on |with |egg. |sporangium.|sporophyte.|spermatozoids. | ---------------+-----------+-----------+---------------+------------ ------------------------------------------------------------+------- SPOROPHYTE. |Begin- (Largest part of the plant. The fern plant. Independent | ning of, and more hardy than, the gametophyte. | of Usually perennial.) |Gameto- | phyte. ------------+-----------+-----------------+-----------------+------- | Beginning | | | | of |Vegetative Part. | Fruiting Part. | |Sporophyte.| | | ------------+-----------+-----------------+-----------------+------- Ferns. |Fertilized |Root, stem, leaf.|Sporangia on | (Polypod- |egg. | |leaf. All of one | iaceæ.)|(Develops | |kind. Sporangium | |into | | contains ....|Spores. |fern | | | |plant.) | | | ------------+-----------+-----------------+-----------------+------- Equisetum. |Fertilized |Root, stem, leaf.|Sporangia on | |egg. | |sporophylls. All | |(Develops | |of one kind. | |into | |Sporangium | |equisetum | | contains ....|Spores. |plant.) | | | ------------+-----------+-----------------+-----------------+------- Isoetes. |Fertilized |Root, stem, leaf.|Sporangia of | |egg. |Stem very short. |two kinds. Small | |(Develops |Leaves bear |ones contain ....|Micro- |into |sporangia in | |spores. |isoetes |cavities at base;|Large ones | |plant.) |outer leaves | contain ....|Macro- | |usually bear | |spores.