Question

Study of rudimentary organ is
A. Dermatology
B. Dysteleology
C. Chirology
D. Etiology

Answer 1

Rudimentary organs are those organs who lost their function and significance in the process of evolution. These organs are normally developed in ancestors but in the present and future generations, their functions are severely lost.

Complete step by step answer:
Option A: Dermatology is a branch of medical science. It is a study of skin.
Option B: it deals with the principle of purposeless. The absence of purpose in nature like non-functional or rudimentary organs. Dysteleology is a study of rudimentary organs
Option C: Chirology is a study of palm or in other words palm reading. It is also known as palmistry. By reading palm they will tell the future or fortune-telling.
Option D: Etiology is the study of the cause or manner of origin of the diseases.
Therefore the correct answer is option B, that is dysteleology.

Note: Charles Darwin gave the number of vestigial organs in humans which he terms as rudimentary in the book "The descent of man" in 1871 He believes that the presence of the rudimentary organs proved that the human evolved from the animals. Some common examples of rudimentary or vestigial organs are fibula in birds, pelvic bone in some whales. In humans a wisdom tooth, inside a corner of the eyes, appendix, tailbone, ear muscles, etc.