Famous Personalities and Discoveries

Paul Ehrlich is regarded as the father of chemotherapy for his pioneering work in developing chemical compounds to treat specific diseases, most notably Salvarsan for syphilis. He established the principle of selective toxicity.

Indians developed the decimal system with place value notation and the concept of zero, which was later transmitted to the Arab world and then to Europe. This revolutionary mathematical system made calculations significantly easier compared to Roman numerals.

Binet is the father of intelligence test.

Father of Non-Directive Counselling is Carl Rogers.

Sir Isaac Newton formulated the Law of Universal Gravitation in 1687, published in his work Principia Mathematica. This law explains the gravitational attraction between two masses and is foundational to classical physics.

 Gregor Mendel, known as the "father of modern genetics", was born in Austria in 1822.

Mother Teresa passed away in 1997 and was buried at the Calcutta headquarters of the Missionaries of Charity (MoC). She was beatified, the first stage in becoming a saint, in 2002 by Pope John Paul II. Mother Teresa's beatification has now paved the way for her canonisation. She will be called Saint Teresa after canonisation.

This is the correct option as Marie Francois Xavier is considered as the 'father of histology'.

Rameshwar Nath Kao, the founding father of India's external intelligence agency (RAW), was born in 1918. He served as the first Secretary of RAW and was instrumental in building India's intelligence capabilities during critical periods. The other years (1920, 1916, 1928) are incorrect.

Correct option is (1).

Anton van Leeuwenhoek is known as the Father of Microscopy for his pioneering work in making high-quality single-lens microscopes and being the first to observe and document microorganisms like bacteria and protozoa in the 1670s.

The rings of saturn are the most extensive planetary ring system of any planet in the solar system. They consist of countless small particles ranging in size from micrometres to metres that orbit about saturn. In 1610, Galileo Galilei first turned a telescope to the sky, he became the very first person to observe Saturn's rings, though he could not see them well enough to discern their true nature.

Francis Huber is universally regarded as the father of modern bee science and his Nouvelles Observations sur Les Abeilles (or New Observations on Bees) revealed all the basic scientific truths for the biology and ecology of honeybees.

Aristotle defined mathematics as “the science of quantity.

Karl Ernst von Baer (1792-1876), commonly referred to as K.V. Baer, is widely regarded as the father of modern embryology. He discovered the mammalian ovum (egg cell) and established the germ layer theory, showing that early embryos of different vertebrates are remarkably similar (von Baer's laws). Theophrastus studied botany, while Darwin and Lamarck are known for evolutionary theory, not embryology.