AP BIOLOGY

Detailed explanation-1: -A fern’s spores don’t grow into leafy sporophyte. They aren’t like seeds of flowering plants. Instead, they produce a haploid generation. In a haploid plant, each cell contains one set of chromosomes or half the genetic complement (like a human sperm or egg cell).

Detailed explanation-2: -An antheridium or antherida is a haploid structure or organ producing and containing male gametes, called as antherozoids. It is present in the gametophyte phase of ferns. Antherozoids are motile male gametes or mature sexual reproductive cells, having a single set of unpaired chromosomes.

Detailed explanation-3: -Reproduction by Spores Ferns and horsetails have two free-living generations: a diploid sporophyte generation (spore-producing plant) and. a haploid gametophyte generation (gamete-producing plant).

Detailed explanation-4: -On the underside of the fronds are sporangia. Within the sporangia are spore producing cells called sporogenous cells. These cells undergo meiosis to form haploid spores. The spores on most ferns are the same size and perform the same function.

Detailed explanation-5: -The sporangia is the structure which produces spores. In ferns, the sporangia are usually aggregated into particular bigger structures.