The following points highlight the three types of life cycle of plant groups. The types are: 1. Haplontic 2. Diplontic 3. Haplodiplontic. Type # 1. Haplontic (Fig. 3.24): There is a single vegetative individual or somatic phase. It is haploid and is often called gametophyte. The haploid plant body may be unicelluÂlar, colonial or multicellular. It can multiply vegetatively and [...]
In this article we will discuss about:- 1. Characters of Vascular Plants 2. Reasons for Dominance and Success of Vascular Plants. Characters of Vascular Plants: 1. They are those plants which possess conducting or vascular tissues, xylem and phloem. Xylem transports water and minerals while phloem conducts organic food. 2. Vascular plants comprise more than 275,000 living species. 3. They [...]
In this article we will discuss about the Characters and Economic Importance of Pteridophytes. Characters of Pteridophytes: They are characterised by the following features: 1. Plant body is a sporophyte (2n) and differentiated into true stem, leaves and roots. 2. Leaves can be microphyllous (small without forming leaf gaps in vascular supply of stem, e.g., Selaginella) or macrophyllous (megaphyllous or [...]