AP BIOLOGY

Detailed explanation-1: -The sporophyte is the main plant body of pteridophyte because it is a diploid multicellular stage that differentiates into true root, stem, and leaves. The sporophyte develops from the zygote which is formed by the fusion of haploid male gamete with the haploid female gamete.

Detailed explanation-2: -The main plant body in Bryophyte is a haploid gametophyte.

Detailed explanation-3: -In the sporophyte phase a diploid (having two sets of chromosomes) plant body grows and eventually produces spores through meiosis. These spores divide mitotically to produce haploid (having a single set of chromosomes) gamete-producing bodies called gametophytes.

Detailed explanation-4: -The main plant body of the bryophyte is haploid. It produces gametes, hence is called a gametophyte.

Detailed explanation-5: -Sporophyte: It is the main plant body of pteridophytes. It is created by the fusion of haploid sperm and haploid ovum.