Inventors and Scientific Discoveries

Robert Whittaker proposed the five-kingdom classification system in 1969, which includes Monera, Protista, Fungi, Plantae, and Animalia. This system was an improvement over earlier two-kingdom and three-kingdom systems by better representing microbial life and fungal distinctiveness. Linnaeus proposed two kingdoms, John Ray worked on species classification, and Lamarck proposed evolutionary theories.

Conservation biology is the scientific study of the nature and status of Earth's biodiversity with the aim of protecting species, their habitats and ecosystems from excessive rates of extinction and the erosion of biotic interactions. The term conservation biology was introduced as the title of a conference held at the University of California, San Diego in La Jolla, California in 1978 organised by biologists Bruce Wilcox and Michael E. Soulé.

Thomas Alva Edison co-founded the General Electric Company (GE) in 1892 through the merger of his Edison General Electric Company with Thomson-Houston Electric Company. GE became one of the largest conglomerates in history. Philips is a Dutch company founded by Gerard Philips, IBM was founded by Charles Flint, and Dell by Michael Dell.

Antoni Van Leeuwen Hoek, a Dutch lens maker was the first to observe some tiny organisms in a drop of water with the help of a simple microscope.

Peroxisomes were identified as organelles by the Belgian cytologist Christian de Duve in 1967.

Correct answer. The concept of stele was developed in the late 19th century by French botanists P. E. L. van Tieghem and H. Doultion as a model for understanding the relationship between shoot and root, and for discussing the evolution of vascular plant morphology.

Correct answer. Leeuwenhoek first saw and described a living cell. Mitochondria was first observed by Kolliker in 1850 as granular structure in striated muscles. Endoplasmic reticulum was discovered by Porter and Thompson in 1945 and was named in 1953 by Porter. Robinson and Brown discovered ribosomes in 1953 in plant cells and Palade in animal cells (1955).

Virchow said, “All cells arise from pre-existing cells”. He is known as 'the father of modern pathology'.

Edgar Altenburg demonstrated the mutational effect of UV radiation in 1928.

This option is correct because G. J. Mendel is the father of genetics and the father of human genetics is Archibald Garrod.

This option is correct because Southern blot is a method used to check for the presence of a DNA sequence in a DNA sample. The method is named after its inventor, the British biologist Edwin Southern.

Nitrogen was discovered by Daniel Rutherford.

This is the correct matching. Robert Brown discovered the nucleus in the cell. Robert Hooke discovered cell in a cork slice with the help of a self-designed microscope. Leuwehoek observed free cells like bacteria for the first time. J. E. Purkinje gave the term protoplasm.

This is the correct answer. James Chadwick discovered neutrons.

Alexander Graham Bell was a Scottish teacher who use to teach deaf people. In 1876 he invented a mean of communication and called his assistant from another room and said" Please come Mr.Watson-I want You". This is the right answer.