Match the following

Let's examine the diseases and their causative organisms:
Thus, the correct matches are:
| Disease | Causative Organism | Match |
|---|---|---|
| Filariasis | Wuchereria bancrofti | A - I |
| Malaria | Plasmodium vivax | B - III |
| Amoebiasis | Entamoeba histolytica | C - IV |
| Pneumonia | Haemophilus influenzae | D - II |
Therefore, the correct option is Option (3).
Match the following:

Assertion: The male ants are developed by parthenogenesis from unfertilized eggs.
Reason: The sex of offspring depends on the type of sperm that fertilizes the ovum, which is not relevant since male ants develop through haploid parthenogenesis, which does not involve fertilization.
Match the following:

Two concentric thin circular rings of radii 50 cm and 40 cm each, carry a current of 3.5 A in opposite directions. If the two rings are coplanar, the net magnetic field due to the two rings at their centre is: