Which of the following sets of organisms represents the correct trends from simple to complex structural organization? 1. Mollusca 2. Platyhelminthes 3. Nematoda 4. Protozoa
-
A.
4 → 1 → 2 → 3 -
B.
4 → 3 → 2 → 1 -
C.
4 → 2 → 1 → 3 -
D.
4 → 2 → 3 → 1
Which of the following sets of organisms represents the correct trends from simple to complex structural organization? 1. Mollusca 2. Platyhelminthes 3. Nematoda 4. Protozoa