The haploid spores in plants that have alternation of generations are made by the sporophyte.

Here's why:

* Alternation of Generations: This refers to the life cycle of plants where a diploid sporophyte generation alternates with a haploid gametophyte generation.

* Sporophyte: This is the diploid phase of the plant life cycle. It produces spores through meiosis, a process that reduces the chromosome number by half.

* Spores: These are haploid cells that can develop into a new gametophyte.

* Gametophyte: This is the haploid phase of the plant life cycle. It produces gametes (sperm and egg) through mitosis.

So, the sporophyte is responsible for creating the haploid spores, which then grow into the gametophyte generation.