Vietnam or Thailand? Vote for the TOP Country of the Week!
Want to type faster? Practice with a typing test or have fun with typing games!
Updated: July 14, 2026
This completes the life-circle of the remarkable and instructive animal. If we compare these permanent blastulae with the free-swimming ciliated larvae or blastulae, with similar construction, of many of the lower animals, we can confidently deduce from them that there was a very early and long-extinct common stem-form of substantially the same structure as the blastula.
Word Of The Day
Others Looking