Chapter 3 "Plant Kingdom" is a continuation of the previous chapter in detail. Previously, we had learned about the wide classification of the living organisms in the form of Five Kingdoms Classification, namely Monera, Fungi, Protista, Plantae, and Animalia, which was put forward by Whittaker (1969).
In this chapter, the students will explore in-depth the further classification in the plant kingdom or the 'Kingdom Plantae.' The meaning and concepts on Algae, Pteridophytes, Angiosperms, Bryophytes, Gymnosperms, Alternation of Generations, and Plant Life Cycles are few other topics discussed here. The topics introduced under the chapter Plant Kingdom are as follows:
All the species named above are a part of the plant kingdom, and each of them has been explained extensively under chapter 3, providing information about their life cycle, habitat, etc. The proper meaning of algae and how it is classified into different types have been explained generously. The concept of reductional division has also been discussed, explaining its involvement and importance in the life cycle of moss, liverwort, angiosperms, ferns, and gymnosperms.
The above sub-topics also throw light on the significance of the different uses of algae and gymnosperms for the survival of humanity. The three groups of plants that bear archegonia have been talked about, and they are Bryophytes, Gymnosperms, and Pteridophytes. Descriptions on a series of cells, different types of cell divisions, heterospory, and its importance have also been given under this chapter.
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