Ioriginally chose a but the answer is d, why? me, i need to do corrections to get back up to an b in science, i'm at a d- rn t^t

1. isogamy 1 organisms with gametes of the same size and shape 2. anisogamy organisms with gametes of different sizes and shapes 3. oogamy 2 organisms with gametes of the same shape but different sizes 4. gonads gamete-producing organs in lower plants 5. gametangia gamete-producing organs in animals