In bryophytes, sex organs are produced in the

1. Analyze the question The question asks which structure in bryophytes (mosses and liverworts) produces the sex organs, namely the antheridia (male) and archegonia (female).

2. Explain the concept Bryophytes show alternation of generations, with two distinct phases:

• Gametophyte (haploid, n): This is the dominant, leafy green plant you see. It produces gametes in its sex organs.
• Sporophyte (diploid, 2n): This is the capsule on a stalk (seta). It grows on the gametophyte and produces spores by meiosis.

3. Step-by-step solution

• Protonema: This is the thread-like early growth that develops from a germinating spore. It grows into the leafy gametophyte and does not bear sex organs itself, so A is wrong.
• Sporophyte: This produces spores in the capsule, not sex organs, so B is wrong.
• Gametophyte: The leafy plant bears antheridia, which produce sperm, and archegonia, which produce eggs. These are usually at the tips of the shoots. This is correct.
• Rhizoid: This is a root-like structure for anchorage and absorption, so D is wrong.

4. Answer The sex organs of bryophytes are produced in the gametophyte, which is option C.

5. Exam tip Remember: "Gametophyte = Gametes." The name itself tells you it produces gametes and sex organs. The sporophyte produces spores. If you can match each generation to what it produces, you can answer most alternation-of-generations questions in JAMB, WASSCE and NECO.