Question

In Bryophyte the male sex organ (antheridium) consists of

• A. Somewhat elongated, swollen sac borne on a more or less slender stalk
• B. Flask shaped structure, the swollen basal portion of which is termed the venter and the upper portion the neck
• C. Single microspore mother cell
• D. An annulus

Answer 1

The correct option is A Somewhat elongated, swollen sac borne on a more or less slender stalk

Tiny, typically stalked, club-shaped structures are called antheridia. Each antheridium is surrounded by a single layer of protective sterile jacket cells. Within the jacket there are antherozoid mother cells or androcytes. Each androycyte metamorphoses into a motile biflagellate antherozoid. Hence the correct option is A.