Unit Test Answers

Which level of classification includes the most species?

A biologist is in the process of classifying a newly discovered fungus. The fungus is a decomposer and has saclike structures. The organism most likely belongs in the same group as which of the following?

Which series correctly lists the eight taxonomic levels in order, from the broadest group to the most specific group?

Brown bears pant, which means they breathe with short, quick breaths. This helps circulate cool air over moist surfaces in the mouth.

Consider these phylogenetic trees. The first tree is based on physical characteristics. The second tree is based on structure, genetics, and evolutionary history. Which can be concluded from a comparison of the two phylogenetic trees?

Consider the diagram of the basic structure of a bacterium.Which of the labeled structures in the image allows bacteria to exchange genetic material and thus evolve to be better pathogens?

An example of genetic recombination is shown in the diagram.Which type of bacterial reproduction is depicted in the diagram?

Which protist exhibits both animal-like and plant-like characteristics?

This is a tulip plant. Which statement best describes the flower based on its physical characteristics?

Which correctly distinguishes between how a pine tree and an apple tree reproduce?

A biologist is studying two organisms, X and Y. She knows that at least one of them is an animal. Organism X only reproduces sexually. Organism Y reproduces both sexually and asexually.

Phytoplankton, shown on the left in the image below, are microscopic organisms that can be found in freshwater and salt water environments. They perform photosynthesis to get energy and act as an important food source for larger organisms, such as the whale that is shown on the right. Which characteristic describes the whale but not its food source, the phytoplankton?

Which statement is best supported by the data in the graph?

Which component of a virus is lacking in a cell?

Which best describes the lysogenic cycle?

Which best describes the difference between protists that have cilia and those that have flagella?

Mike is studying the phylogenetic tree for big cats. He made several statements about the tree. Which statement is not true?

Consider this microscopic image of bacteria. Which type of bacteria is shown in the image?

The classification levels of a human are listed below from largest to smallest. EukaryaAnimaliaChordataMammaliaPrimatesHominidaeHomosapiensWhich level of biological classification do Mammalia and Hominidae represent, respectively?

A botanist has discovered a new plant species and is trying to classify the plant. Its seed has one cotyledon, it has six flower parts, its leaves have parallel veins, its stem is herbaceous, and the vascular bundles in its stem are scattered throughout the stem. Which best classifies this plant?

This diagram summarizes a method to group land plants. Which row in the table best represents the evolution of plants that match the diagram? Labels for Plant Classifications 123456AGymnospermsAngiospermsSeed plantsSeedless plantsMonocotsDicotsBDicotsMonocotsAngiospermsGymnospermsSeed plantsSeedless plantsCSeed plantsSeedless plantsAngiospermsGymnospermsDicotsMonocotsDSeedless plantsSeed plantsGymnospermsAngiospermsMonocotsDicots

When protists and fungi are compared, which feature is unique to protists?

Which best explains why viruses do not have special structures or enzymes that allow them to make their own food?

Consider the table.Types of BacteriaFormShapeAssociated diseaseCoccusXStrep throatBacillusRod shapedYSpirillumSpiralCholera Which best describes X and Y?

Every animal has a distinct body plan.