When the mouth parts of a cockroach are observed, it appears that they are placed in a typical downward arrangement with a smaller upper lip (labrum) and a larger lower lip (labium).This sort of arrangement is called______________________ condition.

When the mouth parts of a cockroach are observed, it appears that they

1.	When the mouth parts of a cockroach are observed, it appears that they are placed in a typical downward arrangement with a smaller upper lip (labrum) and a larger lower lip (labium).This sort of arrangement is called______________________ condition.
Answer» When the mouth parts of a cockroach are observed, it appears that they are placed in a typical downward arrangement with a smaller upper lip (labrum) and a larger lower lip (labium).This sort of arrangement is called______________________ condition.