A) collaterial gland
B) mushroom gland
C) conglobate gland
D) prothoraic gland
Correct Answer: A
Solution :
In cockroach, the fertilization is internal i.e, it take place within the body. Right collaterial gland secretes a watery dihydroxy phenol and left collaterial gland secretes a soluble milk protein, both these combine and form a scleroprotein which take part in the formation of egg case, called ootheca. Ootheca is a purse like, 8 mm long structure which contains two rows of eggs, each row contain 8 fertilized eggs.
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