L1
讲座
1. What is the lecture mainly about
How the relationship between the yucca plant and the yucca moth is changing
A type of mutualistic relationship involving more than two species
A dependent relationship between a plant and an insect species
Harmful relationships between various types of organisms
2. Why does the professor mention the coyote and rabbit, and the corn rootworm and corn plant
To provide examples of pairs of organisms that display negative interactions
To show how interactions between animals are different from those between an animal and a plant
To indicate which organisms she is studying in her research project
To give examples of surprising mutualistic relationships
3. Why does the professor mention the yucca moths’ mouthparts
To explain why only yucca moths can pollinate the yucca plant
To point out that the mouthparts are similar to those of bees
To contrast the mouthparts of male and female yucca moths
To point out that they are potentially harmful to the yucca plant
4. According to the discussion, what will happen if the yucca moth larvae do not
have access to yucca plant seeds as a source of food
They will depend on the mother yucca moth to bring them food.
They will survive by eating yucca plant flowers and leaves.
They will eat other yucca moth larvae.
They will die from hunger.
5. What do yucca moths do that increases the chance that they will produce more offspring
They lay a small number of eggs on many yucca plant flowers.
They lay a small number of eggs underneath a small number of yucca plant flowers.
They lay many eggs on many different parts of the yucca plant.
They lay many eggs on a wide variety of plant species.
6. Why does the student say this:[暂无重录音]
He did not have time to read the entire assignment.
He is confused about an aspect of the professor’s example.
He realizes that he did not hear what the professor just said.
He has misplaced his ecology textbook.
