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According to the evidence, which is the most probable ancestral area of Rattlesnake ?

Rattlesnake1.jpg
U.S.
Mexico
Canada
Australia


Evidence has been collected to show the most probable ancestral area of rattlesnakes is the Sierra Madre Occidental region in Mexico.

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After how much time of birth, the Rattlesnake has fully functioning fangs ?

After one week of birth
After one month of birth
After one day of birth
They born with full functioning fangs


Rattlesnakes are born with fully functioning fangs and venom, and are capable of killing prey at birth.

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After how much time, Adult rattlesnakes shed their fangs ?

5 to 8 weeks
6 to 8 weeks
6 to 10 weeks
4 to 8 weeks


Adult rattlesnakes shed their fangs every 6–10 weeks. At least 3 pairs of replacement fangs lie behind the functional pair.

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What is the shape of Rattlesnake head ?

Circular
Rectangular
Triangular
Oval


It has a triangular-shaped head, much broader at the back than at the front, and a distinct “neck” region.

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What is the standard size of new born baby of Rattlesnake ?

10 inches
15 inches
6 inches
2 inches


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Rattlesnake are

Omnivore
Carnivore
Herbivore
Leafyvore


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Rattlesnake venom ducts are located at

2 cm inside tail top
Tail tip
Lower jaw
Upper jaw


attlesnake fangs are connected by venom ducts to large poison glands near the outer edge of the upper jaw, towards the rear of the head.

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How many species of rattlesnake are found in USA alone ?

13
15
17
19


In the United States, which is the home of 13 species, rattlesnakes are found in nearly every state. They are most numerous and varied in the Southwest and in northern Mexico.

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Rattlesnakes pick up vibrations through their ________

Tongue
Ears
Body muscles
Eyes


Rattlesnakes pick up vibrations through their body muscles which send sound through to their jaw bones and on to their inner ear organs.

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The rattlesnake''s eyes can detect objects or movement from about _______ feet away. Fill in the blank

10
20
30
40


The snake''s eyes can detect objects or movement from about 40 feet away, but its vision is much sharper when objects are closer.

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