asked 181k views
3 votes
The higher invertebrates are divided into two evolutionary lines, protostomes and deuterostomes. This division is based on which developmental feature?

2 Answers

7 votes

Answer:

the answer is A

Step-by-step explanation:

answered
User Firas Shrourou
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8.6k points
2 votes
whether the mouth is developed from the first or second opening.
answered
User Stuart Gough
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8.9k points
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