Q. No.Complete the following analogy :-
Vertebrates : Brain : : Cockroach : ___________
1. Lower-oesophageal ganglion
2. Supra-oesophageal ganglion
3. Nephrocytes
4. Ommatidia
Which of the following is correctly states as it happens in the common cockroach?
1. Oxygen is transported by haemoglobin in blood
2. Nitrogenous excretory product is urea
3. The food is grinded by mandibles and gizzard
4. malpighian tubules are excretory organs projecting out from the colon
Tegmina in cockroach, arises from :
| 1. Prothorax and Mesothorax | 2. Prothorax |
| 3. Mesothorax | 4. Metathorax |
The number of correct statements, regarding cockroaches, among the given statements is:
| I. | Dorsal sclerites are called sternites and ventral sclerites are called tergites. |
| II. | While the labrum is the upper lip and the labium is the lower lip, the hypopharynx acts as the tongue. |
| III. | Anal cerci are seen in both sexes but anal styles are found in male cockroaches only. |
| IV. | Each thoracic segment bears a pair of walking legs. |
| V. | Forewings called tegmina are used in flight while the hind wings are opaque, dark, and leathery. |
1. 2
2. 3
3. 4
4. 5
Which of the following statements is INCORRECT?
| 1. | Cockroaches exhibit mosaic vision with less sensitivity and more resolution |
| 2. | A mushroom-shaped gland is present in the 6th-7th abdominal segments of male |
| 3. | A pair of spermatheca is present in the 6th segment of female cockroach |
| 4. | Female cockroach possesses sixteen ovarioles in the ovaries |
Which of the following statements is true for cockroaches?
1. The total number of ovarioles are five in both ovaries
2. The larval stage is called naiad
3. Anal styles are absent in females
4. They are ureotelic
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 (structure) |
Column II (abdominal segment) |
|
I. Testes II. Ovaries III. Spermatheca IV. Mushroom gland |
1. 2nd to 6th 2. 4th to 6th 3. 6th 4. 6th - 7th |
Codes:
I II III IV
1. 1 2 3 4
2. 2 1 4 3
3. 2 1 3 4
4. 1 2 4 3
| 1. | Spiracle in metathorax, trachea, tracheoles, oxygen diffuses into cells |
| 2. | Mouth, bronchial tube, trachea, oxygen enters cells |
| 3. | Spiracles in prothorax, tracheoles, and trachea oxygen diffuses into cells |
| 4. | Hypopharynx, mouth, pharynx, trachea, tissues |
| Assertion (A): | Circulatory system of cockroach does not contain any aorta, vein or capillary. |
| Reason (R): | Blood of cockroach does not contain any respiratory pigment. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
The triangular head of cockroach is made by fusion of how many segments :
1. Three
2. Five
3. Nine
4. Six
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