Answer:

1.)They are usually located on the backs of the fern leaf which is called a frond. The spore cases (sori) are arranged in dots or lines. Each sorus has several to hundreds of spore cases and each spore case produces 64 spores or more in the most primitive groups of ferns

2.)one egg,

At maturity, archegonia each contain one egg, and antheridia produce many sperm cells

3.)ferns,

Some plants don't produce flowers and seeds. Plants such as ferns and mosses are called nonflowering plants and produce spores instead of seeds. There is also another group called the Fungi, that include mushrooms, and these also reproduce by spores.

4.)Fern Sori. Sori (singular: sorus) are groups of sporangia (singular: sporangium), which contain spores. Sori are usually found on the underside of the blade. Young sori are commonly covered by flaps of protective tissue called indusia (singular: indusium).

5.)In ferns, sporangia are typically found on the abaxial surface (underside) of the leaf and are densely aggregated into clusters called sori. Sori may be covered by a structure called an indusium. ... Lycophytes, in contrast, bear their sporangia on the adaxial surface (the upper side) of leaves or laterally on stems.

Explanation:

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