TPO17-L4
Octopus
Listen to part of a lecture in a biology class.
- What is the lecture mainly about?
- A. Different kinds of color vision in sea animals.
- B. Differences in appearance between various species of octopus.
- C. Ways that octopuses attract their prey.
- D. Ways that octopuses protect themselves from predators.
- Why does the professor first mention Proteus?
- A. To explain how the octopus got its scientific name.
- B. To introduce the octopus’ exceptional abilities.
- C. To point out that the octopus played an important role in Greek mythology.
- D. To provide an example of a mythological character that was part animal and part human.
- How does an octopus change color to match the colors in its environment?
[CHOOSE 2 ANSWERS]
- A. By raising its papillae.
- B. By releasing colored ink.
- C. By reflecting light from its environment.
- D. By contracting the muscles around its chromatophores.
- What does the professor say about the function of the papillae?
- A. They produce dye in different colors.
- B. They propel the octopus through the water.
- C. They change the texture of the octopus’ skin.
- D. They help the octopus contract into a smaller shape.
- What two examples does the professor mention to describe the octopus ability to change its shape?
[CHOOSE 2 ANSWERS]
- A. A small round stone.
- B. The leaves of a plant.
- C. A cloud of ink.
- D. A piece of coral.
- Why does the professor say this: 🎧
- A. To point out an error.
- B. To illustrate a point.
- C. To propose an explanation.
- D. To correct a misunderstanding.
