Question

An archegonium of Riccia has

A
4 neck canal cells, 1 venter canal cell and one oosphere
B
4 neck canal cells, 2 venter canal cells one oosphere
C
4 neck canal cells, one venter canal cell and two oospheres
D
6 neck canal cells, 2 venter canal cells and one oosphere
Solution
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In Riccia, a mature archegonium is a flask-shaped structure and consists of two parts, the basal swollen portion called as the venter and long, slender neck. The neck consists of a vertical row of 4 - 6 neck canal cells. The venter encloses the venter cavity filled with two cells- the lower larger egg cell, called as oosphere and the upper smaller venter canal cell. Thus, the correct answer is option A.

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