Unit Test Answers

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

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?

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?

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?

The lungs, nose, and trachea are organs of the respiratory system. Which best describes these organs?

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?

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

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

Once the body has begun shivering, what happens to make it stop shivering?

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

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 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.

Suppose that a patient is diagnosed with a new disease caused by the buildup of waste material in the body’s cells. Which organelle is most likely malfunctioning in the patient’s cells?

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

Consider this animal cell.Which organelles are labeled D, and what is one feature that distinguishes them from the other labeled organelles?

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?

A scientist is comparing the outer layer of an onion cell to the outer layer of a human skin cell. What is unique about the outer layer of the onion cell compared to the skin cell?

Lewis is exercising and his muscles need oxygen. Which best describes how systems interact to bring his body into homeostasis?

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

Which level of classification includes the most species?

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

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?

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

Every animal has a distinct body plan.