Choose the correct answers from the alternatives given.
Protostomes development includes all of the following except:

spiral cleavage

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daughter cells sit in grooves formed by prior cleavage

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cell fate is fixed and can develop in only one way

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radial cleavage

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Solution

The correct option is D radial cleavage
Protostomia is a clade of animals. Together with the deuterostomes and xenacoelomorpha, its members make up the Bilateria, mostly comprising animals with bilateral symmetry and three germ layers. The major distinctions between deuterostomes and protostomes are found in embryonic development and are Early in development, deuterostome embryos undergo radial cleavage. So, the correct answer is "Radial cleavage".

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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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