In cockroach, the formation of ootheca is by the secretions of:
1. Prothoracic glands of male
2. Prothoracic glands of female
3. Colleterial glands of male
4. Colleterial glands of female
Match each item in Column I with one item in Column II regarding anatomy of cockroach and choose your answer from the codes given below :
|
Column I |
|
Column II |
I. |
Testes |
1. |
2nd to 6th |
II. |
Ovaries |
2. |
4th to 6th |
III. |
Spermatheca |
3. |
6th |
IV. |
Mushroom gland |
4. |
6th-7th |
|
I |
II |
III |
IV |
1. |
1 |
2 |
3 |
4 |
2. |
2 |
1 |
4 |
3 |
3. |
2 |
1 |
3 |
4 |
4. |
1 |
2 |
4 |
3 |
What external changes are visible after the last moult of a cockroach nymph?
1. Mandible become harder
2. Anal cerci develop
3. Both fore wings and hind wings develop
4. Labium develops
Complete the following analogy regarding reproductive system of cockroach :-
Testes : IV-VI abdominal segments : : Ovaries : ____ abdominal segments
(1) II-VI
(2) III-VI
(3) II-VIII
(4) IV-VI
Find the mismatched pair :
(1) Anal style- sexual dimorphism
(2) Spermatheca- accessory reproductive gland
(3) Malpighian tubules- removal of nitrogenous waste
(4) Supra-oesophageal ganglion- supply nerves to antennae and compound eye