Justification of the rhizomatous parts of rhynia represent the gametophyte?
Answers
Answer:
Rhynia, one of the most common forms, was about 18 cm (about 7 inches) tall and possessed water-conducting cells called tracheids in its stem, much like those of most living plants. Underground runners connected its aboveground stems; these stems were photosynthetic, branched evenly many times,
Rhynia is a single-species genus of Devonian vascular plants. Rhynia gwynne-vaughanii was the sporophyte[2] generation of a vascular, axial, free-sporing diplohaplontic embryophytic land plant of the Lower Devonian that had anatomical features more advanced than those of the bryophytes. Rhynia gwynne-vaughanii was a member of a sister group to all other eutracheophytes, including modern vascular plants.
Explanation:
- Rhynia's crops are herbaceous. An unexpectedly turned upright photosynthetic aerial shoots differentiated the plant body into a subterranean rhizome.
- Roots are missing, but tufts of unicellular rhizoids were produced at sites of the rhizome. The aerial shoots with a tapering dichotomically branched network are cylindrical and leafless.
- Many adventitious branches of Gwynne-Vaughan were present both on aerial shoots and on the rhizome. These branches may help in the propagation of vegetation.
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