129
Question
Cells in the neck of archegonium of Dryopteris are in how many longitudinal or vertical rows?
Cells in the neck of archegonium of Dryopteris are in how many longitudinal or vertical rows?
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Solution
The correct option is B 4
Each archegonium is a flask shaped structure. It consists of a swollen venter and a slender neck. It lacks venter wall but contains the naked egg with a small venter canal above it. The neck consists of a wall or jacket layer of 4 vertical rows of sterile neck cells. The neck cells encloses a central neck canal.
Each archegonium is a flask shaped structure. It consists of a swollen venter and a slender neck. It lacks venter wall but contains the naked egg with a small venter canal above it. The neck consists of a wall or jacket layer of 4 vertical rows of sterile neck cells. The neck cells encloses a central neck canal.
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