Question

In cockroach, conglobate gland occurs in
A. Females
B. Males
C. Nymph
D. Both A and B.

Answer 1

Hint: Cockroach are a group of nocturnal (i.e., more active at night), omnivorous and cursorial (running by legs) insects that are included in Class-Insect of Phylum Arthropoda of Kingdom Animalia. They are found in places where warmth, dampness and plenty of organic food is found.

Complete answer:
conglobate gland: these are also known as phallic gland. It is a large club shaped gland present below the ejaculatory duct and reaching anteriorly up to 5th abdominal segment. Its narrow duct opens into the genital pouch by the side of male genital pore. Phallic gland secretes the outer layer of spermatophore.
Now let us match this with given options:-
> Females :- they have collateral gland and not conglobate gland. They secrete hard egg cases or ootheca around fertilised eggs . Thus this option is not correct.
> Males :- conglobate glands are present in the 5th abdominal segment in males. They secrete the outer layer of spermatophore. Hence this option is correct.
> Nymph :- prothoracic gland is present in nymphs . These glands secrete ecdysone to control ecdysis of the nymph. Thus this option is not correct.
> Both A and B :- as option a is not correct. This option can not be correct.

Our required answer is b that is males.

Note: Mushroom gland is also a unique property of males of cockroach. The junction of two vasa deferential and ejaculatory ducts is surrounded by an elaborate mushroom gland in 6th to 7th abdominal segments which consist of numerous compact, finger-like blind tubules. Their secretion nourishes the sperms.