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

Answer 1

The correct option is A 4 neck canal cells, 1 venter canal cell and one oosphere

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.