The Ultimate Spider Quiz

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By: Staff

4 Min Quiz

Image: refer to hsw

About This Quiz

Is it all those legs, or the way they seem to dangle in mid-air, that makes spiders so frightening? People run screaming from them, even though most spiders are not dangerous at all to humans. Take this quiz to learn more about these silk-spinning, insect-eating creatures.

Approximately how many species of spider are there in the United States?

Of the 35,000 known species of spider, just under 10 percent -- about 3,000 -- are indigenous to the United States.

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Spiders are closely related to which of these?

Scorpions and spiders are both arachnids, as evidenced by the fact that both they both have eight legs.

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What is the shortest body length found among spiders?

There are species of spiders whose body length is only 1/50 inch (0.05 cm).

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What is the world's largest species of spider?

The dreaded tarantula, with a leg span of more than 10 inches (25 cm), is the world's largest species of spider. While their bite is extremely painful, they are not capable of inflicting fatal damage to a human.

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How many sections does a spider's body have?

The fundamental difference between the body of an insect and that of a spider is that insects have three sections, while spiders have two. This is because whereas insects have a separate head and thorax, those of a spider are fused in what is known as a cepholothorax.

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The tapered area between the cepholothorax and the abdomen is called what?

Connecting the two sections of a spider's body is a small tapered area known as the pedicle.

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Where are the respiratory systems of spider found?

Spiders have two types of respiratory systems, trachea and book lungs, both of which are found in their abdomen.

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Up to how many eggs might a spider lay?

After courtship and mating, female spiders retire to their lair, where they might lay as many as 3,000 eggs.

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Which of these is a spider likely to eat?

Spiders are carnivores; depending on the species, they eat other spiders, insects, small birds, and small lizards.

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If you were to make a thread of spider silk that surrounded the globe, how much would it weigh?

For its mass, spider silk is perhaps the strongest material known to man, yet it is very light. A strand surrounding the world would only weigh six ounces (170 grams).

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How do spiders avoid getting caught in their own webs?

Spiders are not immune to the sticky substance on their webs, and are susceptible to getting caught in them. They avoid getting caught by remembering the location of the sticky areas and deftly avoiding them.

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How far can jumping spiders leap relative to their body length?

The jumping spider is one of the few species with good vision. It stalks its prey, and then jumps, sometimes 40 times its own body length.

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Which of these spiders builds tube-like nests lined with silk in the ground, as a way of trapping its prey?

The trap-door spider, which can be found in the south of the United States, builds nests into the ground. It then covers the opening with leaves, creating a trap-door.

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Which of these species has two sets of short legs and two sets of long ones?

The crab spider resembles a crab because it walks sideways, and because two of its sets of legs are shorter than the others.

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Why do black widows eat their mates?

Like most spiders, black widows have poor vision, and cannot recognize the difference between their mate and other food.

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Why must spiders molt regularly?

The exoskeleton of a spider is made of cuticle, which is too hard to grow. Molting allows spiders to increase their overall size, shedding their old exoskeleton as they go.

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How often do adult female spiders molt?

Female adult spiders molt once a year, unlike adult males, who do not usually molt.

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If a tarantula falls into the water, what will likely happen?

Tarantulas tend to avoid water, but are able to float and swim in it. They are also totally waterproof. They float and paddle to a safe spot, and crawl out of the water perfectly dry.

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What makes bleeding injuries so dangerous for tarantulas?

The blood of a tarantula does not clot, which means they will not stop bleeding once they start. They are essentially the spider equivalent of a hemophiliac.

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Which species of spider lives the longest?

Tarantulas are not only the world's largest spiders, they also live the longest; the females sometimes live more than 20 years.

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