Module 7 Lab Quiz

Natural Selection & Animal Diversity Lab

For variation to be a meaningful contribution to evolution, what must be true? -

The variation must be heritable from one generation to the next

Which of the following accurately describes the potential outcomes of DNA mutations? -

Mutations can lead to beneficial, harmful, or neutral effects on an organism

________ evolve over time; ________ do not. -

Populations; individuals

What is the primary reason for the evolution of the dark-colored fur phenotype in rock pocket mice in desert environments? -

Enhanced camouflage

Which of the following best describes the role of natural selection in the evolution of rock pocket mice in desert environments? -

Environmental pressures favor certain traits, leading to their prevalence in subsequent generations

Which group is considered the closest living relative of animals? -

Choanoflagellates

According to current evidence, multicellular animals evolved when: -

Cells in protist colonies became specialized and dependent on one another

Which of the following is NOT a characteristic shared by most animals? -

Their cells have cell walls

Animals are classified as heterotrophic because they: -

Obtain energy by consuming other organisms

Which animal phylum is considered the simplest multicellular group and lacks true tissues and organs? -

Porifera

Which two body forms are characteristic of cnidarians? -

Polyp and medusa

Which phylum is the largest and most diverse group of animals? -

Arthropoda

Which of the following animals is an arthropod? -

Spider

Which feature is found in all chordates at some stage of development? -

Notochord

Which phylum includes snails, clams, squid, and octopuses? -

Mollusca