**Core Concept**
Poisonous snakes are a group of serpents that deliver their venom through specialized glands and ducts connected to hollow fangs. This unique characteristic allows them to deliver a potent cocktail of bioactive molecules to their victims, which can cause a range of systemic and local effects.

**Why the Correct Answer is Right**
The correct answer will be a characteristic that is not unique to poisonous snakes, or one that is not a defining feature of their biology. Poisonous snakes are characterized by their ability to deliver venom, which is a complex mixture of enzymes and small molecules that can cause tissue damage, inflammation, and systemic effects.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it is a characteristic that is shared by many species of snakes, not just poisonous ones. All snakes have a similar body plan and many species are constrictors or have other adaptations that allow them to capture and kill their prey.

**Option B:** This option is incorrect because some non-poisonous snakes may also have a similar coloration or pattern to poisonous snakes. This is an example of convergent evolution, where different species develop similar traits in response to similar environmental pressures.

**Option C:** This option is incorrect because many species of snakes, including non-poisonous ones, have a similar scaly skin texture. This is a characteristic that is not unique to poisonous snakes and can be found in many other species of reptiles.

**Option D:** This option is incorrect because some non-poisonous snakes may also have a similar behavior of striking or biting their prey. This is an example of an adaptation that has evolved independently in different species.

**Clinical Pearl / High-Yield Fact**
One key thing to remember is that the term "poisonous" can be misleading, as it implies that the snake's venom is toxic to humans. In reality, many species of snakes are harmless to humans, and the term "venomous" is often used to distinguish between species that deliver venom and those that do not.

**Correct Answer: D. Many species of snakes, including non-poisonous ones, have a similar behavior of striking or biting their prey.**