EVERYDAY SCIENCE

Detailed explanation-1: -Note: Tracheophytes are classified into three groups: ferns, gymnosperms, and angiosperms.

Detailed explanation-2: -Plants can be divided into two groups: flowering plants, for example, sunflowers, orchids, and most types of tree. The other group is nonflowering plants, which includes mosses and ferns. All plants make their own food, taking energy from sunlight.

Detailed explanation-3: -Tracheophytes can be broken down into three classes: ferns, gymnosperms, and angiosperms. Ferns are the least evolved of the tracheophytes; they have vascular systems, and specialized leaf and root structures, but are still dependent on moist environments for reproduction.

Detailed explanation-4: -Classification of Plant kingdom-The Plant kingdom is divided into two groups based on their ability to produce seeds. These groups are-Cryptogams (seedless plants) and Phanerogams (seed-bearing plants). Cryptogams include-Thallophyta, Bryophyta, and Pteridophyta. Phanerogams consist of Gymnosperms and Angiosperms.

Detailed explanation-5: -Tracheophytes are a clade of plants that possess vascular tissue (i.e. xylem / phloem). This group includes all vascular plants, such as clubmosses, ferns, conifers, and flowering plants, but also ancestral and extinct groups such as the rhyniophytes.