Ulothrix , genus of filamentous amateur algae family Ulotrichaceae found in marine and fresh waters. Each cell contains a distinct heart , a central vacuole Seldom encountered, and a large thin chloroplast with at least one pyrenoid. The specialized cell for addition is called the holdfast, and the filaments are typically unbranched. In most species, all the cells can form reproductive bodies. Ulothrix reproduces vegetatively by fragmentation, asexually by nonmotile resting spores aplanospores and motile quadriflagellate spores zoospores , and sexually next to biflagellate gametes.
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Ulothrix: Occurrence, Features and Reproduction
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How do you meet good guys these days?Other than Euglena, which of the following organism divides by longitudinal division? In Which plant stem is used for vegetative propagation of the plant?. This type of reproduction generally occurs in Amoeba, Euglena, Paramecium etc. Vegetative propagation: The reproduction, which generally occurs only in..
04 Fragmentation and Regeneration
Regeneration in PLANARIA and HYDRA (A method of Asexual Reproduction)
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In biology , regeneration is the modify of renewal, restoration, and growth that makes genomes Custom, cells , organisms , and ecosystems resilient to typical fluctuations or events that cause disorder or damage. Upstairs the genetic frank, regeneration is fundamentally regulated by asexual cellular processes. In requital for example, hydra carry on regeneration but imitate by the method of budding.
The hydra and the planarian flatworm maintain long served as model organisms in regard to their highly adaptive regenerative capabilities. Echinoderms such as the sea star Precise, crayfish, many reptiles, and amphibians flaunt remarkable examples of tissue regeneration. The case of autotomy , for pattern, serves as a defensive function as the animal detaches a limb or tail to stay out capture.
After the limb or appendage has been autotomized, cells move into action and the tissues will regenerate. The whole limb of a salamander or a triton will grow repeatedly and again after amputation. In reptiles, chelonians, crocodilians and snakes are impotent to regenerate wasted parts, but multiplied not all kinds of lizards, geckos and iguanas gain regeneration capacity in a high almost imperceptibly a rather.
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- REPRODUCTION IN ALGAE: 3 MODES
- REPRODUCTION IS BIOLOGICAL PROCESS IN WHICH ORGANISM GIVE RISE TO OFFSPRING SIMILAR TO ITSELF.
- OTHER THAN EUGLENA, WHICH OF THE FOLLOWING ORGANISM DIVIDES BY LONGITUDINAL DIVISION? IN WHICH PLANT STEM IS USED...
Asexual Reproduction in Animals: Characteristics,...
The cells may be quadrangular e. Urodele amphibians, such as salamanders and newts, display the highest regenerative ability among tetrapods. Oidia give rise to new hyphae. At the bottom of the article, feel free to list any sources that support your changes, so that we can fully understand their context.
Famous failures of most successful personalities [Motivational] June 9, Another example of reparative regeneration in humans is fingertip regeneration, which occurs after phalange amputation distal to the nail bed especially in children   and rib regeneration, which occurs following osteotomy for scoliosis treatment though usually regeneration is only partial and may take up to 1 year.
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The following points highlight the three modes of reproduction in algae. In that type, any vegetative part of the thallus develops into new individual. It does not encompass any spore array and there is no alternation of generations. It is the most vulgar method of proliferation in algae.
It is the simplest method of spawning. The unicellular forms of algae commonly reproduce by that simple process, oft called binary fission as found in Chlamydomonas, Synechococcus Fig.
In this method, the multicellular filamentous thallus breaks into many-celled fragments, each of which gives rise to a new individual.
The fragmentation may be accidental or at near the formation of separation discs or by some other mechanical force or injury. This method of vegetative clone is found in blue-green algae. Adventitious branches are formed in different enormous thalloid algae, which, when detached from the plant main part, develop into uncharted individuals e.
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