Ascariasis is caused by an endo parasite of human $...A...$ commonly called $...B...$ Here $A$ and $B$ refers to
$A$ - Ascaris suum; $B$ -tapeworm
$A$ -Ascaris; $B$ -roundworm
$A$ -Ascaris worm; $B$ -flatworm
$A$ -Ascaris; $B$ -liver worm
Secondary metabolites such as nicotine, strychnine and caffelne are produced by plants for their :
Erythrocytic cycle of Plasmodium occurs in
Antibodies in our body are complex
It is not a symptom of pneumonia