Multiple choice Which of the following glands' secretion form ootheca in cockroach? Colleterial glands Mushroom glands Phallic glands Spermatheca Reveal answer Fill a bubble to check yourself A Correct answer Explanation Colleterial glands in female cockroaches secrete proteins that form the ootheca - the protective egg case. The ootheca hardens to protect the developing eggs and is deposited in sheltered locations.