Study Material Page 9 of 16 | Archegoniate | CUET (Common University Entrance Test) PG Botany (SCQP07) | Covers Complete Syllabus
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Hepaticopsida – Liver Worts
- All the bryophytes included in this class have shape like liver (eg. Marchantia) or flat (eg. Riccia) so they are known as liverworts.
- Plant body of this group is thallus like and dorsiventral. They may be thalloid (thallose) or differentiated into leaves and stem (foliose). Rhizoids and scales are present on thallus. Rhizoids are unicellular and unbranched. Scales are multicellular.
- The leafy members (eg Porella) have tiny leaf like appendages in two rows on …
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Anthocerotopsida – Hornworts
- The plant body of this group is also thallus like. Scales are absent but rhizoids are present on thallus. Rhizoids are unicellular and unbranched.
- Air chambers or air pores are absent.
- The sporophyte of Hornworts is divided into foot and capsule.
- Sex organs are embedded in the thallus.
- Antheridia develop either singly or in groups in closed cavities called antheridial chambers.
- The sporophyte is differentiated into foot, an intermediate zone or meristematic zone …
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Bryopsida or Musci – Mosses
- All the Mosses are included in this class. The plant body of mosses is made up of stem, leaves and rhizoids. The Rhizoids present in the plants of this class are multicellular and branched. These rhizoids have oblique septa.
- The gametophytic plant body consists of the stem, spirally arranged leaves and the sex organs (antheridia and archegonia).
- The sex organs develop from the superficial cells of the gametophore.
- The sporophyte is differentiated into foot, set…
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