Question

Which of the following represents an example of coevolution?

Group of answer choices

Over time, peppered moths shift from having mostly light-colored wings to mostly dark-colored wings.

The majority of human babies are born weighing between 5.5 and 10 lbs.

The flower of the plant species, Centropogon nigricans, is exclusively pollinated by the tube-lipped nectar bat, Anoura fistulata. The bat has the longest tongue relative to its body length of any mammal and it uses its long tongue to reach the nectar inside of the long, thin C. nigricans flower.

Dark mice on lava and light mice on sand are predated upon less than gray mice in either habitat.

The greenhouse effect:

Group of answer choices

A) has caused extreme fluctuations in climate over the past thousand years.

B) causes seasonal differences in day length every year.

C) is primarily caused by humans through burning of fossil fuels and deforestation.

D) is caused by atmospheric gases that trap heat in the Earth’s atmosphere.

E) is synonymous with global climate change – they mean the same thing.

Answer 1

Answer 1. C) The flower of the plant species, Centropogon nigricans, is exclusively pollinated by the tube-lipped nectar bat, Anoura fistulata. The bat has the longest tongue relative to its body length of any mammal and it uses its long tongue to reach the nectar inside of the long, thin C. nigricans flower.

This is an example of coevolution because the two species have evolved specifically for the other, in order to derive mutual benefit from the interaction, such that only the nectar bat has access to the flower's nectar, while acting as its exclusive pollinator.

Answer 2. D) is caused by atmospheric gases that trap heat in the Earth’s atmosphere.

The greenhouse effect is a natural mechanism of trapping heat radiation using certain gases in the atmosphere, which is then used to warm up the surface. It's very critical for the survival of life on the planet. Although not primarily caused by them, human activities like fossil fuel burning has accelerated the process, causing global warming.