BOTANY

Detailed explanation-1: -Most land plants that cover Earth are seedless plants. Seed plants include flowerless seed plants and haploid seed plants. Haploid sperm and haploid eggs join during fertilization. Pollen grains form from tissue in the male reproductive structure of seed plants.

Detailed explanation-2: -[ sēd′lĭs ] A plant that does not produce seeds. Ferns, horsetails, and all the bryophytes are seedless plants.

Detailed explanation-3: -Besides ferns, seedless vascular plants include ground pines, spike mosses, and horsetails. About 1, 000 species of ground pines, spike mosses, and horsetails are known to exist. Ferns are more abundant, with at least 12, 000 known species. Many species of seedless vascular plants are known only from fossils.

Detailed explanation-4: -The difference between seed plants and seedless plants is that seedless plants do not bear seeds for propagation, whereas seed plants bear seeds for multiplication. The plant kingdom is traditionally divided into four main divisions, i.e Thallophyta, Bryophyta, Pteridophyta and Spermatophyta.