Biology : PU-CET (U.G) 2017 Panjab University Entrance Exam With Answers

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51.

The Number Of Neck Canal Cells In Selaginella Is :

A: 1

B: 2

C: 3

D: 4

The answer is: A

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Explanation

Correct option is A)

The archegonium which develops from a single superficial cell of prothallus is the archegonial initial found just back of the apical meristem. The archegonia are sessile and embedded. The archegonial initially divides to give 4+4 cells which make up the neck. The neck has a single neck canal cell.