L3:
1. What is the purpose of the lecture
To suggest that cryptic patterns in the animal kingdom can be reduced to only a few basic forms
To explain how cephalopods change cryptic patterns based on their visual perception
To contrast underwater and dryland crypsis strategies
To trace the evolution of crypsis in animal as a defense against predators
2. What can be inferred about an animal that only uses stipple crypsis?
It will have a difficult time hiding from predators
It is likely to be of a medium body size
It will tend to avoid areas with multiple colors and patterns
It will most likely be found close to a seashore
3. What happens to some cephalopods when they swim over a gravel patch on the seafloor?
They change their skin color to match the color of the darkest pieces of gravel
They display irregularly shaped dark and light patches
They display a disruptive coloration to match the local environment
They quickly swim away from the gravel patch
4. What features of disruptive crypsis does the professor mention?（多选题）
It disguises the outline of the animal that uses it
It works by contrasting with the colors in the surrounding habitat
It is most effective when used against a single-colored background
D. It can incorporate a combination of other crypsis patterns
5. Why does the professor mention the tiger?
To illustrate that results of the cephalopod research can be extended to many other
animals
To give an example of an animal whose crypsis strategy has been extensively studied
To point out how different its crypsis strategy is from the strategy used by smaller animals
To argue that predators rely on crypsis less than prey species do
6. What does the professor imply when she says this:
Crypsis in cephalopods can rarely fool human visual perception
Few animals use crypsis to hide from predators
New information has led to the reevaluation of some previous assumptions D. More cephalopod research needs to be done to obtain accurate data
