Inventors and Scientific Discoveries

The airplane was invented by Orville and Wilbur Wright, known as the Wright Brothers. They made the first successful powered, controlled flight on December 17, 1903, at Kitty Hawk, North Carolina. Their Wright Flyer covered 120 feet in 12 seconds, proving that heavier-than-air flight was possible. Galileo was an astronomer, and the other names listed are not associated with airplane invention.

 The word ecology was coined in 1866 by the German scientist Ernst Haeckel (1834–1919).

Climax Pattern Theory was proposed by Whittaker (1953). This theory recognizes a variety of climaxes governed by responses of species populations to biotic and abiotic conditions.

Hugo de Vries coined the term 'mutation' based on his observations of sudden changes in evening primrose plants. Darwin proposed natural selection, while Morgan and Sinnott worked later in genetics.

Hugo de Vries discovered mutation in Oenothera lamarckiana (evening primrose). His work on mutation theory was based on observations of sudden, inheritable changes in evening primrose plants, leading to the mutation theory of evolution.

T.H. Morgan conducted groundbreaking experiments on Drosophila melanogaster (fruit flies) and established the chromosome theory of inheritance. His work on sex-linked inheritance was foundational to genetics.

Hugo de Vries, along with Correns and Tschermak, was one of three scientists who independently rediscovered Mendel's work around 1900, decades after Mendel's original publication. While Correns and Tschermak also deserve credit, the question specifically asks about 'The Holland scientist' (Dutch scientist), which points to Hugo de Vries from the Netherlands. Darwin's work on evolution was separate from Mendel's genetics.

Gregor Mendel performed the first systematic experiments in plant hybridization using pea plants in the 1850s-60s, establishing the fundamental principles of inheritance. Hugo de Vries was one of the scientists who rediscovered Mendel's work decades later, not the first to perform hybridization experiments. Darwin's work focused on evolution and natural selection, not experimental hybridization.

Erich von Tschermak (along with Hugo de Vries and Carl Correns) independently rediscovered Mendel's work in 1900. While Tschermak is the correct answer among the options, all three scientists rediscovered Mendel's laws simultaneously.

X-rays was discovered by Rontgen. That is why X-rays are also called as Rontgen radiation, after the name of scientist Wilhelm Conrad Rontgen, who is usually credited as its discoverer, and who had named it X-radiation to signify an unknown type of radiation.

In 1909, Richard Richter developed the first intrauterine device made from silkworm gut.

Malphigi discovered capillaries in 1661, Harvey could not detect them as there were no microscopes at that time.

Gibberellin was first isolated in 1935 in crystal form by Teijiro Yabuta and Sumuki, from fungal strains (Gibberella fujikuroi) provided by Kurosawa.