Standardized Test Prep

Multiple Choice

1. Which of the following is a type of tissue that arises in most animals during development?

   1. endoderm

   2. mesoderm

   3. ectoderm

   4. all of the above

2. Which of the following is NOT a characteristic of animals?

   1. the ability to make their own food

   2. the ability to move

   3. eukaryotic cells

   4. cells that lack cell walls

3. A hollow ball of cells formed after the zygote undergoes division is called a

   1. coelom.

   2. protostome.

   3. deuterostome.

   4. blastula.

4. Which trend did NOT occur during invertebrate evolution?

   1. specialization of cells

   2. development of a notochord

   3. bilateral symmetry

   4. cephalization

5. What is a function of the excretory system?

   1. to supply cells with oxygen and nutrients

   2. to rid the body of metabolic wastes

   3. to gather information from the environment

   4. to break down food

6. Animals often respond to information processed by their nervous system by moving around, using their

   1. circulatory system.

   2. excretory system.

   3. musculoskeletal system.

   4. digestive system.

7. The concentration of nerve tissue and organs in one end of the body is called

   1. cephalization.

   2. segmentation.

   3. body symmetry.

   4. nerve nets.

Questions 8 and 9

A biology student has two samples of earthworms in soil, as shown below. The student knows that, because the worms' body temperature changes with the environment, the worms in Sample A have a higher body temperature than those in Sample B. The student uses a stereomicroscope to count the number of heartbeats per minute for three worms from each sample.

8. Look at the student's two samples. What can you conclude?

   1. Sample A is the control.

   2. Sample B is the control.

   3. Either sample can serve as a control.

   4. This is not a controlled experiment.

9. The student finds that the worms from Sample A have a faster heart rate than the worms from Sample B. What hypothesis might you form based on this observation?

   1. The worms in Sample A are healthier than the worms in Sample B.

   2. A decrease in body temperature corresponds to an increase in heart rate.

   3. There is no relationship between body temperature and heart rate.

   4. A decrease in body temperature corresponds to a decrease in heart rate.

Open-Ended Response

10. What characteristics distinguish invertebrates from nonvertebrate chordates?

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