- 1(current)
Q. No.Which one of the following has an open circulatory system?
1. Pheretima
2. Periplaneta
3. Hirudinaria
4. Octopus
Which of the following statements is correct regarding cockroach?
1. Compound eye is also called as ocellus
2. Spiracle helps in excretion
3. Phallomere is present in female cockroach
4. Ventral nerve cord
The terga, sterna and pleura of cockroach body are joined by :
1. Muscular tissue
2. Arthrodial membrane
3. Cartilage
4. Cementing glue
Which of the following is correctly stated as it happens in the common cockroach?
1. Oxygen is transported by hemoglobin in blood
2. Nitrogenous excretory product is urea
3. The food is ground by mandibles and gizzard
4. Malpighian tubules are excretory organs projecting out from the colon
Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R).
| Assertion (A): | With the help of several ommatidia, a cockroach can perceive several images of an object, i.e., mosaic vision. |
| Reason (R): | Mosaic vision gives more sensitivity but less resolution. |
In the light of the above statements, choose the most appropriate answer from the options given below:
| 1. | (A) is True but (R) is False. |
| 2. | (A) is False but (R) is True. |
| 3. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 4. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
- 1(current)
Q. No.
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