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the underside of the gametophyte
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Are archegonia haploid or diploid?
Archegonia is diploid. Antheridia is haploid. They are found in bryophytes or ferns.
Why is it advantageous for the antheridia and archegonia to be located on the underside of the prothallus?
It is advantageous for the antheridia and archegonia to be located on the ventral aspect of the fern. This keeps the genetalia closest to the rhizomes.
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.
What is the difference between antheridia and archegonia?
Antheridium is the male part of seedless plants, like algae and fungi, and the archegonium is the female part.
Which structure primarily function in plant reproduction?
Flowering plants (Angiosperms) - The flower Flowering plants (Gymnosperms) - Male and female cones Non-flowering plants (Ferns) - Sporangia Non-flowering plants (Mosses) - archegonia (female) and antheridia (male)
Are archegonia haploid or diploid?
Archegonia is diploid. Antheridia is haploid. They are found in bryophytes or ferns.
Structure that holds antheridia and archegonia in ferns?
The antheridia and archegonia of a fern are located on the prothallus, which is heart-shaped. The prothallus is anchored to the soil by rhizoids.
What plants have a prothallus that forms archegonia and antheridia and has a dominant sporophyte?
ferns.
Why is it advantageous for the antheridia and archegonia to be located on the underside of the prothallus?
It is advantageous for the antheridia and archegonia to be located on the ventral aspect of the fern. This keeps the genetalia closest to the rhizomes.
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.
Which of the following plants has a prothallus that forms archegonia and antheridia and has a dominant sporophyte?
Flowering Plants.
What is the difference between antheridia and archegonia?
Antheridium is the male part of seedless plants, like algae and fungi, and the archegonium is the female part.
Why don't archegonia and antheridia mature at the same time on a prothallus?
To avoid self-fertilisation which decreases genetic-diversity
Is a snapdragon monoecious or dioecious?
The gametophyte of the fern is monoecious since both the male and female sexual parts (termed antheridia and archegonia) are both on the same plant. I don't think there are any extant dioecious ferns.
Which structure primarily function in plant reproduction?
Flowering plants (Angiosperms) - The flower Flowering plants (Gymnosperms) - Male and female cones Non-flowering plants (Ferns) - Sporangia Non-flowering plants (Mosses) - archegonia (female) and antheridia (male)
Do plants have reproductive organs Explain how they reproduce?
Yes, most plants have reproductive organs. In flowering plants these are the anthers which produce pollen and the ovaries which produce ovules, both of which are found in flowers. Reproduction occurs when pollen is transferred to the stigma of a flower and fertilization ensues. In ferns the corresponding parts are antheridia and archegonia which are on the undersides of the fronds. Mosses are similar, whilst conifers are more like flowering plants with the cones taking the place of flowers. By contrast, very simple plants reproduce by simple fission.
What do ferns rely on the sexual reprodution?
They both use spores!
