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Question

According to apical cell theory, there is a single apical cell with three cutting faces in the shoot apex. This theory is applicable only some higher algae, bryophytes and pteridophytes and is not applicable to gymnosperms and angiosperms This theory was given by

A
C. Nageli
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B
Hanstein
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C
Schmidt
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D
Clowes
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Solution

The correct option is A C. Nageli
Apical cell theory by Nageli in 1858, stated that in large number of cryptogams single solitary cell has been found to form the growing point and it was supposed that similar condition exists in higher plants too. The presence of complex growing apices in higher plants cannot be explained by this theory.
Thus, the correct answer is option A.

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