Although herbaceous stems all have the same basic tissues, the arrangement of tissues varies considerably. a. Herbaceous dicot stems have vascular bundles arranged in a circle (ring) in x-section, and have a distinct cortex and pith. b. Herbaceous monocot stems have scattered vascular bundles and ground tissue instead of a distinct cortex and pith.
Acute pharyngitis remains contagious till the fever and other symptoms are not cured, it may take 48 to 72 hours to get relief from pain and fever when a person is on antibiotics therapy in streptococcus infection.
They are often the same viruses that cause the common cold, flu, a sinus infection (sinusitis), or other upper respiratory tract infections. Throat infections with bacteria can also cause pharyngitis. Strep throat is the most common bacterial throat infection. It is caused by group A streptococcus bacteria. (For more information on whether this condition is contagious, click Pharyngitis and Sore Throat Causes. These articles also discuss various causes of this throat condition, as well as information on how to prevent spreading the infection.)