Question

According to modern colloidal theory, the protoplasm is a Polyphasic colloidal system. This was first suggested by
A. Purkinje
B. Max Schultz
C. R. A fisher
D. E strasburger.

Answer 1

Protoplasm is a living component of a cell which consists of different kinds of biomolecules and this is covered by cell membrane. Protoplasm term first used by J.E Purkinje for the animal embryo material, and protoplasm theory proposed by Max Schultz.

Complete answer:
R. A fisher and Hardy in 1899 suggested the protoplasm is a polyphasic colloidal system theory, according to this theory protoplasm is fluid which consist of some solid and some non-solid particles, and the fluid matrix of protoplasm is liquid phase consist of water, solid, semisolid particle which are mainly carbohydrates lipids and protein.
In eukaryotes protoplasm is surround the nucleus of the cell is called as cytoplasm and inside the nucleoplasm is present, but in Prokaryotes the material present inside the bacterial cell is called bacterial cytoplasm, in Gram-ve bacteria the periplasm is also present in between outer membrane and plasma membrane.
Max Schultz is the German biologist and doctor, in 1861 proposed the protoplasm theory which states the cell is an accumulation of living substance which possesses a nucleus and all things are enveloped by an outer layer called plasma membrane.
J. E. Purkinje was the physiologist and anatomist, in 1839 he gave the term protoplasm for the fluid substance of the cell which is fluid and semisolid in nature.
E Strasburger:- he was the German botanist and described the mitosis in plants in 1875. He also provide perfect description of embryo sac in gymnosperm and demonstrate the double fertilization in angiosperm plants called flower bearing plants

Therefore, the correct answer is option C.

Note: Purkinje was the first one who coined the term protoplasm, Max Schultz proposed protoplasm theory but R. A fisher and Hardy in 1899 suggested the protoplasm is a polyphasic colloidal system theory.