A) nucleus
B) chromosomes only
C) cell organelles
D) all of these
Correct Answer: D
Solution :
Cell theory was proposed by two scientists "Schleiden and Schwann" in 1839. According to this theory all the living organisms are made up of cells however after a slight modification this theory is established now i.e. living organisms consists of cells and cell products.You need to login to perform this action.
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