The above algal points provide with some short introductory features of each algae. In the adult cells chloroplast disintegrates into polygonal parts, which differ in size. iv. The shape and branch length priors were exponential. and rounded sides bearing irregular rows of short blunt spines. Considering this, which type of chloroplast is found in Oedogonium? The hairs may be in the form of single elon­gated cell or rows of fine and elongated cells. 2006; Brouard et al. iii. 4, 6), it is seen that the star is of some thickness with convex upper and lower faces, The life-cycle of Stigeoclonium amoenum Kiitz. The life-cycle of Stigeoclonium amoenum Kiitz. 2002; Bélanger et al. Stigeoclonium: other spp. The cells contain a parietal chloroplast with many pyrenoids. division, the chloroplast of Chlorella is often divided into several parts and such cells resemble Muriella species. 297 and rounded sides bearing irregular rows of short blunt spines. It also changes its shape as the cell ages. Within a few hours the characteristic shape, to a casual glance that of a star, has been developed. Each cylindrical cell of the filament, with the exception of the basal cell that serves as a rootlike holdfast, contains a netlike chloroplast and a large central vacuole. vi. Oedogonium filaments are typically unbranched and only one cell thick. When the zygote is turned on its side (Textfigs. Shape of chloroplast in higher plant is. In accordance with the description, the chloroplast of young cells of Muriella is band-shaped or pot-shaped, later it forms a hollow sphere. In the other media amended with antialgal chemicals, generally there is reduction in length of the cells except Answer. All four completely sequenced chlorophycean chloroplast genomes, except that of Stigeoclonium, have maintained the widespread quadripartite structure consisting of a large inverted repeat (IR) and two single copies regions (Maul et al. The chloroplasts and eyespots of the fused gametes remain distinct inside the zygote for less than a day; before they are completely mature only a single irregular chloroplast is to be seen and the eyespots have disappeared. Some members have setae (Coleochaete) or hairs (Stigeoclonium) of different types. This (S. farctum) also appears to have concentric rings in the basal disc, due to the chloroplasts in adjacent filaments being aligned. A. Discoid. v. Erect system bears reproductive structures. Chloroplast is single, parietal and band-shaped and contains one to many pyrenoids. The chloroplast is a discoid plastid which contains chlorophyll (green pigment) within the thylakoid membranes of the organelle. D. Cup-shaped. Antialgal chemicals in Stigeoclonium tenue growth 369 ceils. have a less well-developed basal system than the one illustrated. Stigeoclonium basal cells dominate the sparse periphyton in highly shaded forest streams in east Tennessee (Steinman, 1992; Hill et al., 1995). Two simultaneous runs were performed, each with 16 chains, for 2500000 generations on the SCENZ‐Grid cluster at Landcare Research, Palmerston North, New Zealand. 2006; de Cambiaire et al. B. Girdle-shaped. Stigeoclonium → Draparnaldia → Drapaenaldiopsis → Chara (11-14) ... but those of primary and secondary projecting systems have a curved plate shaped or parietal chloroplasts with many pyrenoids. This organelle is present in the green parts of plants where photosynthesis takes place. C. Reticulate.
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