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Shkiper50 [21]
3 years ago
14

The major evolutionary split of protostome animals was based on the _____.

Biology
1 answer:
Sedbober [7]3 years ago
8 0

Answer:

e. way that the organism grows

Explanation:

During the evolution of animals, there was a great increase in body complexity, emerging specialized organ systems and differentiated structures, which also contributed to the classification of animals.

The protostomies differ mainly in that the blastopore (opening that forms at the stage of the gastrula during embryonic development) will give rise to the embryo's mouth, and the anus will open posteriorly (In deuterostomies, the anus opens first, and the mouth opens later).

Some <u>examples</u> of protostomies are worms, mollusks and arthropods.

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