Question

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

Answer 1

Hint: There are many types of plants existing in our world. Some are seedless, while some have seeds. Some have flowers but some are flowerless. Presence of the vascular system is also a feature of some plants.

Complete solution:
We have diverse species of animals, plants and microorganisms . Some are known to us while some are still unknown.

Let us learn some of the histories of the classification of kingdoms.
Carl Linnaeus was the first to give the nomenclature codes as he divided the kingdoms into Living and Nonliving.

Then, Ernst Haeckel proposed the three kingdoms introducing the protists. Now we had kingdoms Animalia, Plantae and protists.

Kingdom Monera was then introduced by Herbert F. Copeland which included all the prokaryotes. Now we could classify kingdoms based on prokaryotes (monera) and eukaryotes (Animalia, Plantae and protists).

Today we follow the Five kingdom classification given by Robert Whittacker stated as prokaryotes will include monera and eukaryotes will include kingdom animalia, plantae, protists and fungi.

Now coming to the divisions of the Plantae kingdom, it is divided into 5 groups:
1. Thallophytes
2. Bryophytes
3. Pteridophytes
4. Gymnosperms
5. Angiosperms
Each group has its own unique and special feature which will make them belong to that particular group.

Now we will get to the other part of the question – the basis of division of Plantae kingdom:-
1. Differentiated or undifferentiated body
2. Seedless or seed plants.
3. Seeds produced are naked or enclosed.
4. Presence or absence of specialized tissues for water and food transport.

Note: Thallophytes are simple autotrophic nonvascular plants.
Bryophytes are called the amphibians of the plant kingdom.
Pteridophytes are the plants with ferns without seed or flowers.
Gymnosperms do not produce flowers. They have exposed seeds
Angiosperms are flowering plants. They can be monocots or dicots.