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Question

A poisonous lizard is

A
Varanus
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B
Phrynosoma
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C
Heloderma
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D
Ophisaurus
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Solution

The correct option is B Heloderma
Heloderma, the only genus of the family Helodermatidae, consists of venomous lizards. Members of the family are venomous. Venom glands are located in their lower jaws, unlike snakes' venom glands, which are located in their upper jaws. Also, unlike snakes, helodermatids lack the musculature to inject venom. The venom is typically used only in defense, rather than in subduing prey, and the lizard must chew on its victim to work the venom into the flesh.
So, the correct answer is option C.

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