The adult human skeletal system consists of 206 bones, as well as a network of tendons, ligaments and cartilage that connects them. Teeth are made of dentin and enamel and are part of the skeletal system but are not counted as bones.
Advantages-Spores are covered by a hard protective coat which enables them to survive under unfavourable conditions like lack of water and extreme temperatures.But when the conditions are favourable, the spores grow to produce new plants. This help them to run their species at any type adverse condition or environment.Thus the advantage is that despite of unfavourable environment, their species will not be demolished. Disadvantages-spore formation process is quite primitive.ach spore can survive for a long time since it is covered by a hard protective coat to withstand unfavorable conditions such as high temperature and low humidity. A spore germinates under favorable conditions and develops into a new individual. For example, Plants such as moss and ferns reproduce by means of spores.
Introduction to different types of spores: Definition of spores: Spore is a single celled reproductive body that grows into a new organism. it is produced by bacteria,fungi,seedless plants and some protozoanâs.Flowerless plants such as ferns and mosses also produce spores.Single spores develop into new organisms.ungi: Most fungi develop spores. They produce diploid spores, in organs known as sporangia. Fungal spores are light and are carried away by wind and water to a greater distance. Liverworts and mosses also produce diploid spores.