Recently, there is an outbreak of human cases of avian influenza virus (H9N2) and clusters of respiratory illness in children in northern China. H9N2 is a subtype of the influenza A virus which causes human influenza as well as bird flu. This virus is found worldwide in wild birds and is endemic in poultry in many areas. Symptoms: Infections ranging from mild, flu-like symptoms or eye inflammation to severe, acute respiratory disease or death
Spirogyra reproduces primarily through which process?
In roots, the protoxylem lies towards the periphery and the metaxylem towards the center. This arrangement of primary xylem is called ____________.
Which gland regulates the activity of other endocrine glands in the body?
Extra number of which chromosome is responsible for Down’s syndrome (Mongoloid Idiot) in man.
Respiration occurs in which part of the cell?
________carries/carry hereditary material.
Which of the following is NOT a sexually transmitted disease?
Amphibians and many reptiles typically have which type of heart?
For the process of photosynthesis, which of the following gases is required during the day?
Prothrombin, which is responsible for blood clotting, is released by:
