In the following groups of terms, choose the term that does not belong, and explain why it does not belong.
1. Ciliate, dinoflagellate, sarcondine
2. Cilia, pseudopodia, contractile vacuole
3. gametophyte, sporophyte, fruiting body
4. chlorophyll a, carotenoids, phytoplankton
5. water mold, cellular slime mold, kelp