Falls are the most common cause of traumatic brain injury, and falling poses an especially serious risk for older adults. When a senior sustains a traumatic brain injury in a fall, direct effects of the injury may result in long-term cognitive changes, reduced ability to function and changes in emotional health.
Asexual reproduction is by means of spores produced in sporangia borne on the hyphae. Zygomycota get their name from the production of thick-walled sexual structures called zygosporangia, which can remain dormant for long periods.
Certain bacteria produce endospores. Bacillus and Clostridium are endospore producing bacteria. Process of forming a spore is known as sporulation. Spores produced inside the bacterial cell are known as endogenous spores.Spores are differentiated cells. Endospores may survive for millions of years.f the plant has two types of spores, male and female spores, it is known as heterospory. Male spores are called microspores and female spores are called megaspores. Micro spores are also called pollen grains. In flowering plants, microspores are found inside the pollen sac or the microsporangium.