| List - I Organisms | List – II Mode of Nutrition | ||
| A. | Euglenoid | i. | Parasitic |
| B. | Dinoflagellate | ii. | Saprophytic |
| C. | Slime mould | iii. | Photosynthetic |
| D. | Plasmodium | iv. | Switching between photosynthetic and heterotrophic mode |
The corresponding matches are:
Euglenoids exhibit both photosynthetic (autotrophic) and heterotrophic nutritional capabilities. This aligns with A-IV.
Dinoflagellates are predominantly photosynthetic. This corresponds to B-III.
Slime moulds are saprophytic, deriving nutrition from dead organic matter. This matches C-II.
Plasmodium is parasitic, acquiring nutrients from a host. This corresponds to D-I.
Consequently, the correct selection is (3): A-IV, B-III, C-II, D-I.