Question

A poisonous lizard is
A.Varanus
B.Phrynosoma
C.Heloderma
D.Ophisaurus

Answer 1

Hint: Lizards belong to the class of Reptiles and have scaly skin and a long tail. According to the species of lizards, their weight can vary from 500 mg to 150 kgs. Poisonous lizards are commonly called Gila monsters and are carnivorous.

Complete answer: Varanus lizard is found mostly in the parts of southeast Asia and West Asia. Varanus lizards are also called monitor lizards. The length of Varanus from the tip of the snout to the end of the tail ranges from 61 to 175 cm and are terrestrial in nature. The adult Varanus mostly feed on small terrestrial vertebrates, fishes, eggs, and arthropods. These are not poisonous. Therefore, option A is wrong. Phrynosoma is a non-poisonous lizard which is also called horned lizards. These lizards can squat blood derived from the modifications of the cephalic circulation. They have an effective defense mechanism that is used against predators and some memory. Thus, option B is also wrong. Heloderma is the poisonous lizard. It belongs to the species of venomous lizards and is commonly known as Gila monsters. It is native to the northwestern Mexican state of Sonora and the southwestern United States. They are a threat to human beings. Therefore, option C is the correct answer. Ophisaurus are commonly known as grass lizards and they have easily breakable tails. Ophisaurus is called a false snake as it appears similar to that of the snake with no limbs. But they are easily distinguishable from the snake. Therefore, option D is also wrong.
So, option C is the correct answer.

Note: Komodo dragon is the dangerous known lizard. Lizards are cold-blooded animals. They require sunlight to survive longer. The tail of the lizard is used by them for the defense mechanism as it is very much strong.