Matthias Schleiden was a German botanist who, along with Theodor Schwann, is best known for founding the cell theory. He initially practiced law in Hamburg before fully focusing his attention on his hobby, botany.Know More
Schleiden didn't care for the emphasis other botanists placed upon plant classification and preferred to study plant structure instead. While teaching at the University of Jena in 1838, he wrote ?Contributions to Phytogenesis,? where he claimed that different parts of plants are composed of cells. He also discovered and documented the importance of the cell nucleus in the cell division process.
He was born on April 5, 1804, and died on June 23, 1881.Learn More
Robert Brown contributed to cell theory by showing the radical motion of molecules within a cell under the light of a microscope. The Brownian method was named after Brown's discovery of the way that the molecules moved.Full Answer >
Cell theory was developed in the early 19th century by three German scientists, Theodor Schwann, Matthias Jacob Schleiden and Rudolf Virchow. While all three scientists contributed to the generally accepted classical cell theory, each hypothesized different sections of it and had parts of their theory refuted and replaced.Full Answer >
According to the Encyclopaedia Britannica, gametophytes are the haploid phase and sporophytes are the diploid phase of plants and algae that undergo the alternation of generations. Gametophytes are similar to gametes in other life forms, but rather than being a single cell that must then form a zygote, gametophytes are living organisms that reproduce themselves asexually.Full Answer >
Osmosis occurs in plants to keep them from wilting. Plant cells have rigid but fully permeable cell walls, and osmosis creates enough pressure against the cell wall to keep the cell turgid. Thus, plant cells can absorb water via osmosis without danger of bursting. Because plants do not have a skeletal system, the pressure created by osmosis is the only way the plant can maintain structure.Full Answer >