Ratna Bahadur Khadka

 In mushroom, the inner part of pilus contains lamellated gills. The gills of mature mushroom bears their layers, trauma, sub hymenium and hymenium. The outermost layer is hymenium. this layer contains two types of cells, basidium and paraphysis. Paraphysis is sterile. In basidium, there are two hypoid nucleus, one male and other female. One diploid nucleus is formed by the fusion of two hypoid nuclei. This nucleus divides meiotically, forming four hyploid nuclei. Of which, two are plus and rest two are minus strain. After that, four finger  like structures are developed at the tip 0f basidium. There known as steringmata. One haploid nucleus is nucleus is migrated in each sterigma where one basidiosphere is formed.

 nvironment Day is an important global event celebrated annually on June 5th to raise awareness about environmental issues and encourage action for the protection and sustainability of our planet. Here are some key reasons why World Environment Day is significant: Awareness: It serves as a reminder to individuals, communities, and governments worldwide about the critical importance of environmental conservation and sustainable development. Education: World Environment Day provides an opportunity to educate people about various environmental challenges such as climate change, pollution, deforestation, loss of biodiversity, and their impacts on ecosystems and human well-being. Action: It inspires individuals and communities to take positive actions to protect the environment, whether through personal lifestyle changes, community initiatives, or advocacy for policy changes. Global Unity: The event brings people from different countries, cultures, and backgrounds together under a c...