SCIENCE
CELL BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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that organisms were the basic unit of life
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that both cells and organisms were basic units of life
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that the questions of the basic unit of life were too abstract to answer
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none of the above
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Detailed explanation-1: -Schleiden and Schwann believed that cells are the basic unit of organisms including plants and animals. They don’t believed that organisms are the basic unit of life nor the cells and organisms are.
Detailed explanation-2: -By the late 1830s, botanist Matthias Schleiden and zoologist Theodor Schwann were studying tissues and proposed the unified cell theory. The unified cell theory states that: all living things are composed of one or more cells; the cell is the basic unit of life; and new cells arise from existing cells.
Detailed explanation-3: -In 1838, Matthias Schleiden, a German botanist, concluded that all plant tissues are composed of cells and that an embryonic plant arose from a single cell. He declared that the cell is the basic building block of all plant matter. This statement of Schleiden was the first generalizations concerning cells.
Detailed explanation-4: -However, the cell theory was first given by Schleiden and Schwann failed to suggest how cells are formed. Therefore, later in the year 1855, a scientist named Rudolf Virchow modified this cell theory and stated that new cells are formed from the pre-existing cells i.e. Omnis cellula-e cellula.