L1
讲座
1. What is the main purpose of the lecture?
To define the term “chemical ecology”
To demonstrate how spiders interact with different kinds of moths
To show the importance of chemistry in a certain ecological interaction
To explain the life cycle of the rattlebox moth
2. Why does the professor discuss how detachable wing scales help moths escape
from spider webs?
To point out that butterflies have no wing scales
To emphasize the difficulty of escaping from a spider web
To explain that some spiders use toxic chemicals to catch insects
To contrast a commonly used survival strategy with a less common one
3. In what way are rattlebox moths different from most other moths?（多选题）
They are brightly colored.
They use mechanical defenses.
They have excellent night vision.
They are unappealing to predators.
4. What did the laboratory experiment with rattlebox moths prove?
Their wing scales can change colors.
Their chemical defense depends on their diet as larvae.
The larvae do not change into adult moths without a specific diet.
The larvae might become harmful to bean crops.
5. What does the professor mention as a consequence of the rattlebox moth’s defense mechanism?
Agriculturalists try to eradicate the rattlebox moth.
The rattlebox moth’s habitat is limited to certain areas.
Spider populations are decreasing in some areas.
Toxic rattlebox plants are spreading.
6. Why does the professor say this:
To cause doubt about what she says about the spider
To stress that she is knowledgeable about the subject matter
To suggest that the spider’s behavior might be surprising to students
To suggest that students should form their own opinions
