During evolution, derived ancestral features are sometimes apparently lost withi

Question

During evolution, derived ancestral features are sometimes apparently lost within particular group of descendant species. Which of the following does not correctly pair a type of animal with a corresponding evolutionary loss?
Hagfish: loss of vertebrae Chondrichthyes: loss of bone Caecilians: loss of limbs Aves: loss of organs or organ mass Haplorrhini: loss of one nostril
During evolution, derived ancestral features are sometimes apparently lost within particular group of descendant species. Which of the following does not correctly pair a type of animal with a corresponding evolutionary loss?
Hagfish: loss of vertebrae Chondrichthyes: loss of bone Caecilians: loss of limbs Aves: loss of organs or organ mass Haplorrhini: loss of one nostril

Hagfish: loss of vertebrae Chondrichthyes: loss of bone Caecilians: loss of limbs Aves: loss of organs or organ mass Haplorrhini: loss of one nostril

Explanation / Answer

The correct answer is Haplorrhini

Haplorrhini do not lose one nostril .

They lost the function of terminal enzyme that refers tha lack of rhinarium or wet nose .

So these are called dry nose .

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