Characteristics of riccia
Answers
Explanation:
The main function of rhizoids is to anchor the thallus on the substratum and to absorb water and mineral nutrients from the soil. In Riccia fluitans, the only aquatic species, thallus is long, narrow, ribbon-like and dichotomously branched. Rhizoids and scales are absent
Answer:
Characteristics of riccia
Explanation:
External Features of Riccia:
Study dorsal and ventral floor of the thallus; separate scales and mount in glycerine; additionally separate rhizoids from the ventral floor, stain in safranin, mount in glycerine and study:
1. Gametophytic plant frame is thalloid, prostrate, linear or ribbon-fashioned and flattened structure.
2. It is dichotomously branched and inexperienced to mild inexperienced in shade.
Riccia
3. Thallus is thick withinside the center and turns into skinny closer to the margins.
4. An apical notch is gift at the terminal part of thallus. Gametophytic plant frame has surfaces, dorsal and ventral.
(a) Dorsal Surface:
5. A median longitudinal furrow or despair is gift at the dorsal floor
6. Sex organs also are gift in this floor.
Dorsal Surface of the Thallus
(b) Ventral Surface:
Scales and rhizoids are gift.
Ventral Surface of the Thallus
Scales:
1. These are typically presenton the margins in a single row, or close to the developing points.
2. Scales are multicellular however one-celled thick structures
Riccia
3. The shade of the scales is violet.
4. Function of scales is to shield the younger developing points.
Describe riccia.
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Riccia identification in points
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