Arrange the stages of non-flowering plant reproduction in order:

Sporophyte Gametes Gametophyte Zygote Spores

Spores - Sporophyte - Gametophyte - Gametes - Zygote

The correct order of stages of non-flowering plant reproduction is as follows:

1. Sporophyte
2. Spores
3. Gametophyte
4. Gametes
5. Zygote

To arrange the stages of non-flowering plant reproduction in order, follow these steps:

1. Spores: The first stage is the production of spores. Spores are tiny, single-celled structures that are typically produced by the sporophyte generation of non-flowering plants.

2. Sporophyte: After the spores are produced, they germinate and grow into the sporophyte stage. The sporophyte is the diploid (having two sets of chromosomes) stage of the plant's life cycle. It is responsible for producing spores through a process called sporogenesis.

3. Gametophyte: Next, the spores undergo mitosis and develop into the gametophyte stage. Gametophytes are haploid (having one set of chromosomes) and produce gametes, which are specialized cells involved in sexual reproduction.

4. Gametes: The gametes are the sex cells required for sexual reproduction. In non-flowering plants, the male gametes are produced by male gametophytes (antheridia), and the female gametes are produced by female gametophytes (archegonia).

5. Zygote: Once the male and female gametes unite during fertilization, a zygote is formed. The zygote is the result of the fusion of the genetic material from the male and female gametes and represents the starting point of the sporophyte generation.

To recap the order: Spores → Sporophyte → Gametophyte → Gametes → Zygote