blastosphere

Example Sentences

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Thus, an oval and an elongate egg produce respectively an oval and an elongate blastosphere.

From The Biological Problem of To-day Preformation Or Epigenesis? The Basis of a Theory of Organic Development by Hertwig, Oscar

If we compare this with the typical blastosphere of the lower type, we see that it is, as it were, flattened out on the yolk.

From Text Book of Biology, Part 1: Vertebrata by Wells, H. G. (Herbert George)

The blastosphere of the frog is like what the blastosphere of amphioxus would be, if the future hypoblast cells were enormously larger through their protoplasm being diluted with yolk.

From Text Book of Biology, Part 1: Vertebrata by Wells, H. G. (Herbert George)

The blastosphere, growing beyond its limits, folds into a cup-shaped organism.

From The Biological Problem of To-day Preformation Or Epigenesis? The Basis of a Theory of Organic Development by Hertwig, Oscar

Such a sphere is called a blastosphere, and may be regarded as a spherical mass of protoplasm, of which the central portion is so much vacuolated that it seems to consist entirely of fluid.

From Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" by Various