Question Detail
Question
_________ & _________ concluded that all plants & all animals were made of cells respectively
Correct Answer
Option A is the correct answer.
Detailed Explanation
In 1838-39, Matthias Schleiden (a botanist) concluded that all plants are composed of cells. Theodor Schwann (a zoologist) extended this idea to animals, concluding that all animal tissues are also composed of cells. Together, they formally proposed the cell theory.
Hint
The botanist (plant studier) came first in the pair, then the zoologist (animal studier).