Write the contribution of (a) Robert hooke (b) leeuwenhoek (c) Robert brown
Answers
Answer:
Explanation:
Robert Hooke was the first scientist to observe cells,in 1665. He observed the cells in a cork slice with the help of a primitive microscope.
Leeuwenhoek, with the improved microscope, discovered the free living cells in pond water for the first time
Robert brown - discovery of the nucleus and its role helped to prove the cell theory, which states that all living organisms are composed of cells and cells come from pre-existing cells. Other discoveries and contributions of Brown include: The discovery and naming of over 2000 species of plants.
Answer:
A) Robert Hooke:-
He coined the term cell in the 1960s and discovered it in cork in 1665.
Discovered the law of elasticity known as Hook's law.
B)Leeuwenhoek
In 1976 he discovered first living cell bacteria and named it animalcules.
He is also known for the discovery of RBC, sperm and protozoa.
C)Robert Brown
He discovered the nucleus of a cell in 1931.
He is best known for his discovery of the random movement of the microscopic particle in the surrounding solution known as brownian movement.