How does the tail of a shark or a gar differ from the tail of common fishes? (Fig. [228].) Do you know of fish destitute of scales? Do you know of fish with whiplike feelers on the head? (Figs.) Why are most fishes white on the under side?
| Comparative Review.—(Copy table on one page or two facing pages of notebook.) | |||||
|---|---|---|---|---|---|
| Is there a Head? A Neck? | Method of Feeding | Digestive Organs and Digestion | Reproduction | Senses | |
| Amœba | |||||
| Sponge | |||||
| Hydra | |||||
| Starfish | |||||
| Earthworm | |||||
| Wasp | |||||
| Mussel | |||||
| Fish | |||||
Fig. 229.—Drawing the Seine.
Fig. 230.—Sunfish.
Fig. 231.—Tunny.
Fig. 232.—Swordfish.