In a moss the sporophyte

Options

A. (a) arises from a spore produced from the gametophyte
B. (b) manufactures food for itself, as well as for the gametophyte
C. (c) is partially parasitic on the gametophyte
D. (d) Produces gametes that give rise to the gametophyte

Answer

**Step-by-Step Solution:**

1. **Understanding the Structure of the Sporophyte**: The sporophyte in moss consists of two main parts: a stalk (also known as a seta) and a capsule (sporangium). The capsule is where spores are produced.

2. **Attachment to the Gametophyte**: The sporophyte remains attached to the gametophyte, which is the dominant phase in the life cycle of mosses. This attachment is crucial as the sporophyte depends on the gametophyte for nutrition and support.

3. **Origin of the Sporophyte**: The sporophyte arises from the fertilization of gametes, which occurs when male and female gametes (produced by the gametophyte) fuse together. This fusion results in the formation of a diploid zygote, which develops into the sporophyte.

4. **Diploid Stage and Meiosis**: The sporophyte represents the diploid stage of the moss life cycle. Within the sporophyte, meiosis occurs, leading to the production of haploid spores. These spores are then released and can germinate to form new gametophytes, continuing the life cycle.

5. **Conclusion**: Based on the information gathered, the correct statement regarding the sporophyte in moss is that it produces gametes that give rise to the gametophyte. Therefore, the correct answer is option D.