Question

What are the major divisions in the Plantae? What is the basis for these divisions?

Answer 1

Kingdom Plantae:

1. It comprises the plants, which vary in size, that is, from giant trees to tiny mosses.
2. They are multicellular, eukaryotic, and autotrophic organisms.

The kingdom Plantae is differentiated into five prime divisions:

1. Thallophyta: The species in this division exhibit a simple body design, with no stem, roots, and leaves. For example, algae, fungi, and lichens.
2. Bryophyta: In this division, the body of the plants are differentiated into crude stem and leaf-like compositions, with no vascular system. For example, hornworts, mosses, and liverworts.
3. Pteridophyta: In this division, the body of the plants is differentiated into root, stem, and leaves, and a vascular system is present. For example, horsetails, ferns, and lycophytes.
4. Gymnosperms: They are flowerless plants, which generate naked seeds and cones. Examples are ginkgo, sago palm, etc.
5. Angiosperms: They are the flowering plants, which possess vascular bundles with phloem and xylem tissues, and the seeds are covered. Examples are rose, hemp, orchids, etc.

The basis for the divisions in the kingdom Plantae are:

1. Undifferentiated and differentiated plant body.
2. Existence and non-existence of vascular tissues.
3. Presence or absence of seeds.
4. Presence of naked or covered seeds.