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the underside of the gametophyte

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Structure that holds antheridia and archegonia in ferns?

The structure that holds antheridia and archegonia in ferns is called the gametophyte. It is a small, heart-shaped structure that develops on the underside of the fern frond. Antheridia produce sperm cells, while archegonia produce egg cells for sexual reproduction in ferns.


What plants have a prothallus that forms archegonia and antheridia and has a dominant sporophyte?

Ferns are plants that have a prothallus with archegonia and antheridia. In ferns, the sporophyte generation is dominant, meaning it is the more visible and long-lived stage of the plant's life cycle compared to the gametophyte stage.


Are archegonia haploid or diploid?

Archegonia are haploid structures found in plants. They are part of the female reproductive structure and are responsible for producing the egg cells.


What is the difference between antheridia and archegonia?

Antheridia are male reproductive structures that produce sperm cells, while archegonia are female reproductive structures that house egg cells. Antheridia are typically smaller and simpler in structure compared to archegonia. Both structures are commonly found in plants like mosses and ferns.


Why is it advantageous for the antheridia and archegonia to be located on the underside of the prothallus?

Having antheridia and archegonia on the underside of the prothallus protects them from desiccation and mechanical damage, as they are closer to the substrate. This positioning also aids in the dispersal of sperm towards the eggs when water is present, as water carries the sperm to the archegonia.


Which of the following plants has a prothallus that forms archegonia and antheridia and has a dominant sporophyte?

Flowering Plants.


Do vascular plants produce antheridia and archegonia on the same gametophyte?

Only in those cases where spores are not differentiated into micro- & megaspores for developing the gametophytes. Thus homosporous vascular plants produce archegonia and antheridia on same gametophyte.


How does reproduction in ferns differ from that in mosses?

Ferns reproduce through spores, which are produced in sporangia located on the underside of fronds. Mosses reproduce through spores as well, but they also have a gametophyte stage where male and female gametes are produced in separate structures called antheridia and archegonia. Ferns do not have a distinct gametophyte stage like mosses do.


Why don't archegonia and antheridia mature at the same time on a prothallus?

Archegonia and antheridia do not mature at the same time on a prothallus to prevent self-fertilization and promote genetic diversity. By producing mature reproductive structures at different times, the prothallus increases the chances of cross-fertilization with gametes from other individuals.


Where do you Find antheridium?

Antheridia are found in non-flowering plants, particularly in bryophytes (like mosses and liverworts) and certain ferns. They are typically located on the male gametophyte, where they produce sperm cells. Antheridia can be found in moist environments, as they require water for sperm motility during reproduction.


What are the gametes produced in nonvascular plants?

These two other answers are straight cap. The correct answer is Antheridium for A+ people.


What is a structure in seedless plants that produces sperm?

Antheridia are structures in seedless plants that produce sperm. They are typically found on the gametophyte generation of plants like ferns and mosses. Within the antheridia, sperm cells are produced through a process of spermatogenesis.

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