who proposed Protoplasm theory???
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Answers
Answer:
In 1880, term protoplast was proposed by Hanstein (1880) for the entire cell, excluding the cell wall, and some authors like Julius von Sachs (1882) preferred that name instead of cell.
Explanation:
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Answer:
Protoplasm (/prəʊtə(ʊ)ˌplaz(ə)m/,[1] plural protoplasms[2]) is the living part of a cell that is surrounded by a plasma membrane.
In some definitions, it is a general term for the cytoplasm (e.g., Mohl, 1846),[3] but for others, it also includes the nucleoplasm (e.g., Strasburger, 1882). For Sharp (1921), "According to the older usage the extra-nuclear portion of the protoplast [the entire cell, excluding the cell wall] was called "protoplasm," but the nucleus also is composed of protoplasm, or living substance in its broader sense. The current consensus is to avoid this ambiguity by employing Strasburger's [(1882)] terms cytoplasm [coined by Kölliker (1863), originally as synonym for protoplasm] and nucleoplasm ([term coined by van Beneden (1875), or] karyoplasm, [used by] Flemming [(1878)])".[4][5][6][7][8] The cytoplasm definition of Strasburger excluded the plastids (Chromatoplasm).
Like the nucleus, whether to include the vacuole in the protoplasm concept is controversial.[9]
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