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Who among the following scientists discovered free living cells in pond water for the first time?
Robert Hooke
Robert Brown
Anton Van Leeuwenhoek
Franz Bauer
Anton Van Leeuwenhoek
Anton Van Leeuwenhoek is credited with the discovery of free-living cells in pond water in 1674. He observed these tiny organisms, which he called 'animalcules', using his self-designed high-quality single-lens microscopes.
Anton Van Leeuwenhoek is credited with the discovery of free-living cells in pond water in 1674. He observed these tiny organisms, which he called 'animalcules', using his self-designed high-quality single-lens microscopes.
Think of it like looking through a magnifying glass at a clear glass of water and suddenly realizing it is actually a 'busy city' full of tiny moving creatures that were invisible to the naked eye.
L-L (Leeuwenhoek = Living cells)
M=fDтАЛ тАФ where M is magnification, D is the least distance of distinct vision, and f is the focal length of the simple lens.
Leeuwenhoek improved the grinding and polishing of small glass lenses to achieve magnifications up to 270 times. By placing water samples on the stage of his simple microscope, he was able to resolve bacteria, protozoa, and spermatozoa for the first time in human history, marking the birth of microbiology.
Robert Hooke coined the term 'cell' while observing cork slices (dead cells).
Anton Van Leeuwenhoek is known as the 'Father of Microbiology'.
Leeuwenhoek was the first to document microscopic life in pond water, teeth scrapings, and semen.
Cell theory was formally proposed later by Schleiden and Schwann.
Revolutionized biological sciences by revealing the existence of unicellular life.
His findings were initially met with skepticism by the Royal Society until they were verified by other scientists.
Foundation of modern microbiology and clinical diagnostics.
Development of lens grinding technology.
Robert Hooke (Option A) observed dead plant cell walls in 1665.
Robert Brown (Option B) discovered the nucleus in the cell.
Franz Bauer (Option D) was a botanical illustrator known for microscopic studies of orchids.
C is correct тАФ Anton Van Leeuwenhoek used his superior single-lens microscope to first identify free-living microorganisms in pond water samples.
Remember: Robert Hooke = Dead cells (Cork), Leeuwenhoek = Living cells (Pond water), Robert Brown = Nucleus, and Purkinje = Protoplasm.
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