Study the following and pick up the correct combinations:
| S.No. | Spinal nerves | No. of pairs in man | Location |
|---|---|---|---|
| I | Cervical nerves | 7 pairs | Neck region |
| II | Thoracic nerves | 12 pairs | Thorax |
| III | Sacral nerves | 5 pairs | Lumbar region |
| IV | Coccygeal nerves | 1 pair | Caudal region |
Assertion (A): Binary fission in Euglena is called symmetrogenic division.
Reason (R): Plane of fission in Euglena is at right angles to the longitudinal axis of the body.
Match the parasites with their infective stages in humans:
| Parasites | Infective stage |
|---|---|
| A) Entamoeba histolytica | I) Tetranucleate cyst |
| B) Plasmodium vivax | II) Sporozoite |
| C) Ascaris lumbricoides | III) 2nd stage Rhabditiform larva |
| D) Wuchereria bancrofti | IV) 3rd stage Microfilaria |