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 unicellular, colonial or multicellular. It can multiply vegetatively and [...]
In this article we will discuss about:- 1. Characteristics of Gymnosperms 2. Types of Living Gymnosperms 3. Economic Importance. Characteristics of Gymnosperms: Gymnosperms are, those seed plants in which the seeds remain exposed over the surface of the megasporophylls because the latter are not folded to form pistils. 1. Gymnosperms are a small group of seed plants which are represented [...]
The below mentioned article provides biology notes on Fern. Adiantum (Maiden Hair Fern) and Dryopteris (Male Shield Fern) are the two common ferns that are found in moist shady places in tropical, subtropical and temperate areas. Adiantum is also observed to occur under bridges, water courses and walls of old well. Plant body is a perennial independently living evergreen sporophyte [...]