Algae deals with the important system of classification of the plant kingdom, an account of thallophytes, life histories of Rhodomelaceae: Polysiphonia 27.

Plant Kingdom – Notes. Algae Algae are simple, thalloid, chlorophyll-bearing organisms found in fresh and marine water, moist stones, soils and wood. Algae can be unicellular, colonial or filamentous. Based on the type of pigment and the type of stored food we can classify algae into Chlorophyceae, Phaeophyceae and Rhodophyceae.

Polysiphonia species Polysiphonia elongata Name Synonyms Boryna elongata (Hudson) Bory, 1829 Ceramium brachygonium Lyngb., 1819 Ceramium elongatum (Hudson) Roth Ceramium elongatum var. denudatum (C.Agardh) Örsted, 1844 One of the many cyanotypes (or "sunprints") that make up Photographs of British Algae: Cyanotype Impressions (1843) by Anna Atkins, an English botanist and, some argue, the very first female photographer, most noted for using photography in her books on various plants. Sexual reproduction is oogamous. • e.g., Polysiphonia, Porphyra, Gracilaria and Gelidium 11. BRYOPHYTES (Amphibians of the plant kingdom) Bryophytes are also called amphibians of the plant kingdom because these plants can live in soil but are dependent on water for sexual reproduction. The life cycle of many red algae like Polysiphonia has an alternation of haploid and diploid multicellular generations. Economic Importance of Red Algae: The red algae like Porphyra (Laver) and Chondrus (Irish Moss) are cultivated in different countries as a food crop for human consumption.

Polysiphonia kingdom

Commonly they are found in littoral and sublittoral zones. In India they are found in western and southern coasts. …red algae, as exemplified by Polysiphonia, have some of the most complex life cycles known for living organisms. Following meiosis, four haploid tetraspores are produced, which germinate to produce either a male or a female gametophyte.

Topic: Plant kingdom. Structure of Polysiphonia: Size: It may be upto a few metres long. Constituent parts: Its body can be differentiated into following three pans:

Rhizaria- unicellular amoeboids 4 Excavates - unicellular flagellates “Algae” 2 4. Excavates 5.

Kingdom. Plantae. Phylum. Rhodophyta. Class. Florideophyceae. Order. Ceramiales As Polysiphonia stricta (Mertens ex Dillwyn) Greville, 1824 · Dyntaxa.

Polysiphonia atlantica. Algae.

3 –Plant kingdom 6Ch B RYOPHYTES (Amphibians of the plant kingdom) Bryophytes include the various mosses and liverworts that are found commonly growing in moist shaded areas in the hills.
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3. Which are the most primitive group of algae. 4. Iodine is obtained from.

Question 2. Polysiphonia stricta and P. delicata share most morphological characters, but P . stricta thalli are usually longer (up to 25 cm) and axes are thicker (50-300 µm).
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Polysiphonia fibrillosa Greville Species: Polysiphonia flaccidissima Species: Polysiphonia flexicaulis Harvey Species: Polysiphonia hancocki Species: Polysiphonia harveyi Bailey Species: Polysiphonia havanensis Species: Polysiphonia hendryi Species: Polysiphonia homoia Species: Polysiphonia howei Hollenberg Species: Polysiphonia indigena

is a red alga belonging to the family Rhodomelaceae within the order Ceramiales (Rhodophyta).

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In India they are found in western and southern coasts. …red algae, as exemplified by Polysiphonia, have some of the most complex life cycles known for living organisms. Following meiosis, four haploid tetraspores are produced, which germinate to produce either a male or a female gametophyte. Polysiphonia is a large genus with about 200 species. The genus is represented in India by about 16 species found is southern and western coasts of India. Some common Indian species are P. ferulacea, P. urceolata and P. variegata. Most of the species are lithophytes i.e., found growing on rocks.

In the 2000s, the demand has increased in line with av L Bergström · Citerat av 1 — Polysiphonia fucoides. Gaffeltång. Furcellaria lumbricalis. Grovsläke. Ceramium United Kingdom 64(2): 485-493. Steneck, R. S. (2006).