1. Afrosoricids feature tribosphenic teeth. How is that important? It\'s reflect
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Question
1. Afrosoricids feature tribosphenic teeth. How is that important?
It's reflective an ancestral dentition of the dinotheria.
It's reflective an derivative dentition of the protheria.
It's reflective an ancestral dentition of the eutheria.
It's reflective an advanced dentition of the carnivoran eutheria.
2. Sengis (Macroscelideans) represent a relict clade. Their most surprising feature is not fossilized and gives them their common name. What is it?
Flexible proboscis
Blunt proboscis
Flexible pinnae
Enlarged pinnae
3.
Golden moles (Chrysochloridae, Afrosoricida, Afrotheria) look and behave a lot like the marsupial moles (Notoryctemorphi, Metatheria). Why?
close genetic relationships
convergence due to similar habits and environment
divergence from a recent common ancestor
migration of marsupial moles back to Africa with subsequent convergence
a.It's reflective an ancestral dentition of the dinotheria.
b.It's reflective an derivative dentition of the protheria.
c.It's reflective an ancestral dentition of the eutheria.
d.It's reflective an advanced dentition of the carnivoran eutheria.
Explanation / Answer
1. it reflects the advanced dentition of carnivoran eutheria as it is an independent feature that developed rather than inherited by ancesters.
2. they have flexible nose i.e. flexible proboscis
3. their close genetic relationships
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