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.
Plant Reproductive Structures. Plant sexual reproduction relies on stamens, which are the male parts, and pistils, which are the female parts. Stamens contribute the male genetic material in the form of pollen, which is produced from anthers that are on the terminal ends of stalks called filaments. Pistils form ovaries at their bases and stigmas, which are sticky pollen receptors, on the terminal ends of stalks called styles.