Question

Following are the effective defence against predation, except

• A. Poison fangs in snakes
• B. Change in colour in chameleon
• C. Enlargement of body size by swallowing air in puffer fish
• D. Melanism in moths

Answer 1

The correct option is A Poison fangs in snakes

Predation is a natural biological interaction between members of two species in which one species (predator) captures, kills and eats the other species. So, as to escape from the predators different organisms adapt different methods to escape from the being preyed upon. Colour change in chameleons and many species and melanism in moths are examples of camouflage which animals adapt to prevent being predated upon.
As a defence mechanism, the puffer fish inflate their body filling their extremely elastic body until they become spherical. This prevents them from being identified by the predators.
Fangs are long pointed teeth, an adaptation found in snakes to inject venom into the enemy or more so in its prey. The venom is delivered by its two maxillary teeth which are grooved, elongated or tubular which curve into an arc for better stress management when biting