Question

Interbreeding O polyploidy O macroevolution Question 8 2 pts The biological species concept distinguishes species based upon o their evolutionary relationships o differences in perance Otheir ecological niche their inability to reproduce Question 2 pts pigmentation and fully Cave-dwelling catfish and cave-dwelling earthworms both lack pigmentation and their eyes are reduced or absent. The most recent common ancestor to these organisms had developed eyes. The similarities between cave catfish and cave earthworms are an example of O coevolution shared derived characters O an analogy or convergent evolution O a homology 2 pts Question 10

Answer 1

8)Option 4 is the answer.

Biological concept of species says that organisms belonging to same species interbreed(reproduce)with individuals of that population.Absence of interbreed among individuals says that they belongs to different species.

Similarility in apperance doesn't mean they belongs to same species.

9) Option 3 is the answer.

Both species entered into similar kind of environment(convergent evolution),where there is no light,so need to use eyes ,so eyes lost their function.Also no need to protect their body from harmful rays from Sun light,so pigmentation is also lost.