BSC2011 EXAM 1 QUESTIONS AND ANSWERS

What is thought to be the correct sequence of these events, from earliest to most recent, in the evolution of life on Earth? 1. origin of mitochondria 2. origin of multicellular eukaryotes 3. origin of flowering plants 4. origin of cyanobacteria - Answer-4, 1, 2, 3 All of the following statements correctly describe some part of natural selection, EXCEPT - Answer-Fitness of an organism is directly equivalent to its survival ability On a coral reef in the Florida keys, a population of damselfish has two color variation: brown and pink. These fish seek habitats that provide good camouflage, so brown individuals mostly associate with stands brown elkhorn coral, and pink individuals are found exclusively in colonies of pink finger coral. Mating occurs within these coral patches, with females laying eggs onto rocks or dead coral, which is immediately fertilized by a male. Over time, these two groups of damselfish are likely to... - Answer-Undergo sympatric speciation due habitat specialization Charles Darwin would most likely agree with which statement? - Answer-Resources are finite and animals must compete for survival Starting from the wild mustard Brassica oleracea, farmers have created the strains known as Brussels sprouts, broccoli, kale, and cabbage. Therefore, which of the following statements is correct? - Answer-In this wild mustard, there is enough heritable variation to permit these different varieties through artificial selection. Can phylogenies be revised and updated? - Answer-Yes, in response to any new data Which of the following is the correct way to write the scientific name of the West Indian manatee, which is in the family Trichechidae? - Answer-Trichechus manatus The dashed box includes homeothermic animals, or organisms that produce their own body heat (colloquially known as "warm blooded"). This trait is an example of a what? - Answer-Convergent evolution A ship carrying a population of lizards lands on a small island that doesn't have any lizards, yet there are many different food sources and habitats available that lizards love. A long time after the island was colonized, there are many different species of lizards on the island, each adapted for a different niche. This would be an example of.... - Answer-adaptive radiation