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A scientist is conducting embryological studies on a new species of invertebrate. She notices that it has spiral determinate cleavage and a blastopore that develops into a mouth. How does she classify the new species? chordate urochordate deuterostome protostome radiate

User Visnu
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Answer:

Based on the information provided, the scientist can classify the new species as a protostome. Here's the reasoning behind this classification:

Spiral determinate cleavage: Spiral cleavage is a characteristic feature of protostomes. In this type of cleavage, the cell divisions are diagonal and spiral-shaped, leading to the formation of a distinct pattern of cells. Determinate cleavage refers to the fate of the cells being determined early in development. These features are commonly observed in protostomes, but not in deuterostomes.

Blastopore developing into a mouth: In protostomes, during gastrulation, the blastopore forms and develops into the mouth of the organism. This is in contrast to deuterostomes, where the blastopore typically develops into the anus, and the mouth forms later.

Given these characteristics, the scientist can classify the new species as a protostome. The options you provided (chordate, urochordate, deuterostome, and radiate) do not align with the observed traits of spiral determinate cleavage and the blastopore becoming the mouth.

Step-by-step explanation:

User Avinashbot
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