Question

Theory of ontogeny recapitulates phylogeny was proposed by
A. Mendel
B. Haeckel
C. Erasmus Darwin
D. Weisman

Answer 1

Hint: The study in the field of sciences is never-ending. In every field, various theories are proposed by different scientists in order to understand the various aspects of growth and evolution. Charles Darwin is the father of evolutionary studies. Most of the work is based on phylogenetics.

Step by step answer:Theory of ontogeny recapitulates phylogeny states about the stages of the development of the animal embryo. Ontogeny means growth and development. Phylogeny is the study of evolutionary relationships and history. It is also called the Recapitulation theory. It tells us about the development of an embryo from fertilization to gestation is the same as that of successive adult stages in the evolution of animal ancestors. This theory was considered as wrong after some time due to the fact that embryos evolve in different ways.
Option A: Mendel: Gregor John Mendel gave the fundamental laws of inheritance which are very important in the study of genetics.
Option B: Haeckel: Ernst Haeckel was the one who stated the Theory of ontogeny recapitulates phylogeny.
Option C: Erasmus Darwin: He is known to have contributed to the field of phylogenetics as he proposed the Laws of organic life. He was the grandfather of Charles Darwin.
Option D: Weisman: The Weismann theory stated that the multicellular organisms have germ cells that transmit heritable information, while the somatic cells will carry out bodily functions.
Hence, the answer is option B: Haeckel

Note: Ernst Haeckel was born on 16 February 1834 and died at the age of 85. He was a german scientist. He studies the flora and fauna in his major works. He was famous for his ontogeny studies. He was awarded the Linnean Medal.