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.
Answer 1 : A simple, though possibly simplistic, explanation is that these organisms use antibiotics to protect their food supply. Soil bacteria and fungi live by digesting and recycling dead plant material such as leaves and seed cases.Obviously it is impossible for the bacteria to carry away their prized food supply and therefore it is argued that they lace surrounding food with compounds that are toxic to those of other species.o perhaps we are seeing a form of clever bacterial bulimia: faced with a situation in which the bacteria literally swim in a soup of fat-producing carbon compounds, the bacteria turn these compounds not into fatty lipids but into their structurally close relations, the antibiotics.