Crossword-Solution: GASTRAEA
Dictionary
| Word | Word Type | Definition |
|---|---|---|
| Gastraea | n. | A primeval larval form; a double-walled sac from which, according to the hypothesis of Haeckel, man and all other animals, that in the first stages of their individual evolution pass through a two-layered structural stage, or gastrula form, must have descended. This idea constitutes the Gastraea theory of Haeckel. See Gastrula. |
We have 1 clue for the answer “GASTRAEA”
| Clue | Answers |
|---|---|
| hypothetical primeval form posited by Haeckel | 1 answer |
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Powerful blow
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Hint 1 meaning
To boil with a continued bubbling or heaving and
rolling, with noise.
Hint 2 anagram
LPALOW
Hint 3 another clue
BATTER ___
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Sentences with GASTRAEA (5)
But we can only indirectly and approximately, with the aid of comparative anatomy and ontogeny, conjecture what lower forms enter into the chain of our ancestry between the gastraea and the chordula, and between this and the lancelet.
Thirty-six years have now elapsed since, in my General Morphology, I established phylogeny as an independent science and showed its intimate causal connection with ontogeny; thirty years have passed since I gave in my gastraea-theory the proof of the justice of this, and completed it with the theory of germinal layers.
The typical embryonic form of the metazoa, as it is presented for a time by this simple structure of the two-layered body, is called the gastrula; it is to be conceived as the hereditary reproduction of some primitive common ancestor of the metazoa, which we call the gastraea.
Although I laid special stress on the great morphological importance of this cavity in my Study of the Gastraea Theory, and endeavoured to prove the significance of the four secondary germinal layers in the organisation of the coelomaria, I was unable to deal satisfactorily with the difficult question of the mode of their origin.
The many new points of view and fresh ideas suggested by my gastraea theory and Hertwig's coelom theory led to the publication of a number of writings on the theory of germinal layers.