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Animals have the innate ability to escape from predation. Examples for the same are given below. Select the incorrect example
A
Colour change in chameleon
B
Poison fangs in snakes
C
Melanism in moths
D
Enlargement of body size by swallowing air in puffer fish
Detailed Solution
Prey animals have evolved various defences to escape predation.
Colour change in the chameleon is camouflage: it blends with the background and is not easily seen by predators.
Melanism in moths (as in the peppered moth on soot-covered tree trunks) is also camouflage against predatory birds.
The puffer fish swallows water or air and inflates its body to a large, spiny ball that predators find difficult to swallow; this is a defence against predators.
Poison fangs in snakes are mainly a means of capturing and killing prey; they are an offensive adaptation of a predator, not an innate means of escaping from predation.
So the incorrect example is poison fangs in snakes.
Note: the answer key of the source gives the puffer fish option; that is changed here because inflation of the puffer fish is a classic anti-predator defence.
Colour change in the chameleon is camouflage: it blends with the background and is not easily seen by predators.
Melanism in moths (as in the peppered moth on soot-covered tree trunks) is also camouflage against predatory birds.
The puffer fish swallows water or air and inflates its body to a large, spiny ball that predators find difficult to swallow; this is a defence against predators.
Poison fangs in snakes are mainly a means of capturing and killing prey; they are an offensive adaptation of a predator, not an innate means of escaping from predation.
So the incorrect example is poison fangs in snakes.
Note: the answer key of the source gives the puffer fish option; that is changed here because inflation of the puffer fish is a classic anti-predator defence.