In Protostomia, blastopore forms

Mouth

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Anus

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Both of the above

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None of the above

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Solution

The correct option is A Mouth
In protostomes, the embryo forms a dent on one side, the blastopore, which deepened to become the archenteron. It is the first phase in the growth of the mouth. In deuterostomes, the original dent becomes the anus.
Thus, the correct answer is option A.

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Similar questions

The characters given below are of a protostome. Identify the wrong statements.

1). Cleavage or division of the zygote is spiral and determinate.

2). During development process the mouth in these animals forms first and arises

from the blastopore or from its anterior margin.

3). Coelom or body cavity is formed due to splitting of mesoderm.

4). Mesoderm is derived from cells on anterior lip of blastopore.

5). Nerve cord is ventral in position.

6). Cell fate is determined the moment the cell is born.

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