what is auxospore in biology?
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Auxospore. From Wikipedia, the free encyclopedia. In certain species of diatoms, auxospores are specialised cells that are produced at key stages in their cell cycle or life history. Auxospores typically play a role in growth processes, sexual reproduction or dormancy.
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Unlike fungal spores, where one fungus can make many spores, bacterial endospores are a "one cell makes one endospore" affair. Endospores exhibit no signs of life, however when the environment returns to a favorable state for bacterial growth the bacterial endospore will germinate and return to a normal state.
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Characteristics of Fungi Fungi are eukaryotic, non-vascular, non-motile and heterotrophic organisms. They may be unicellular or filamentous. They reproduce by means of spores. Fungi exhibit the phenomenon of alternation of generation.
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Ascus is a spherical, cylindrical or dub-shaped structure in which fusion of haploid nuclei occurs during sexual reproduction, followed by reduction division and formation of usually eight haploid ascospores. While ascocarp is a general term for the fruiting body of an ascomycete fungus.
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Oscillatoria annae include unicellular, colonial and filamentous forms some filamentous cyanophytes form differentiated cells called heterocyst, that are speciallized for hydrogen fixation, and resting or spore cells called aconites.
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Perfect fungi reproduce both sexually and asexually, while imperfect fungi reproduce only asexually (by mitosis). In both sexual and asexual reproduction, fungi produce spores that disperse from the parent organism by either floating on the wind or hitching a ride on an animal.
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Auxins promote stem elongation, inhibit growth of lateral buds (maintains apical dominance). They are produced in the stem, buds, and root tips. ... Auxin is a plant hormone produced in the stem tip that promotes cell elongation.
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Meiosis is a specialized form of cell division that produces reproductive cells, such as plant and fungal spores and sperm and egg cells. In general, this process involves a "parent" cell splitting into two or more "daughter" cells.
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Fern spores are the tiny genetic bases for new plants. They are found contained in a casing, called sporangia, and grouped into bunches, called sori, on the underside of the leaves. Spores look like little dots and may be harvested for fern spore propagation by the intrepid gardener.
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How is auxin used in tea plantation and hedge making? Auxin is a plant hormone produced in the stem tip that promotes cell elongation. Auxin moves to the darker side of the plant, causing the cells there to grow larger than corresponding cells on the lighter side of the plant. ... Auxin maintains this dormancy.
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WHEN LIVING CONDITION BECOME UNFAVORABLE, SOME BACTERIA FORM SPECIAL, DEHYDRATED CELLS CALLED ENDOSPORES. 2. A bacterial Endospore is a dormant structure that is produced by some Gram-positive bacterial species that are exposed to harsh environmental conditions.
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Endogenous spores are produced internally within a sac by cell division of the protoplasm. The main difference between zoospores and aplanospores is that zoospores are motile spores whereas aplanospores are nonmotile spores. Zoospores are motile asexual spores found in algae, fungi, and protozoans.
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Non-flowering plants reproduce by releasing large numbers of tiny spores. These minute organisms consist of one or a few cells inside a tough coat.
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A zygospore is a diploid reproductive stage in the life cycle of many fungi and protists. Zygospores are created by the nuclear fusion of haploid cells.
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Answer: Zygospores are found in D) Mucor. Explanation: Zygospores form the diploid reproductive stage in many fungi; it is formed by the nuclear fusion of haploid cells.
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Fungi is a eukaryotic organism that includes microorganisms such as yeasts, moulds, and mushrooms. These organisms are classified under kingdom fungi. The organisms found in Kingdom fungi contain a cell wall and are omnipresent. They are classified as heterotrophs among the living organisms.
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How is auxin used in tea plantation and hedge making? Auxin is a plant hormone produced in the stem tip that promotes cell elongation. Auxin moves to the darker side of the plant, causing the cells there to grow larger than corresponding cells on the lighter side of the plant.