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.
In biology, a spore is a unit of sexual or asexual reproduction that may be adapted for dispersal and for survival, often for extended periods of time, in unfavourable conditions. Spores form part of the life cycles of many plants, algae, fungi and protozoa. Bacterial spores are not part of a sexual cycle but are resistant structures used for survival under unfavourable conditions. Myxozoan spores release amoebulae into their hosts for parasitic infection, but also reproduce within the hosts thr