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∙ 11y agoSpider, common name for about 34,000 species of arthropod animals (in a group of organisms called chelicerates) having eight walking legs, anterior appendages bearing fangs and poison glands, and specialized reproductive organs on the second appendages of the male. They commonly make extensive use of silk that they spin. Like other arachnid species, spiders are terrestrial, although a few have adapted to freshwater life by trapping air bubbles underwater and carrying the bubbles with them. Spiders are numerous and occur worldwide.
Although most are less than 1 cm (less than 0.4 in) long, the largest has a body length of about 9 cm (about 3.6 in), and spider leg spans can be much greater. You can get more information by watching tv shows about spiders. That's where I got my information.
It is believed that selection on their ancestors favored eight legs because of how they localize prey (hunt).
Some robotics research attempts to answer the question: how many legs are necessary or sufficient for locomotion? Experiments show that six legs easily provide stability.
It might be that a spider's "extra" pair of legs is for spinning a web or capturing prey while the other six legs provide stable locomotion.
It might also be that a spider's eight legs provide more stable locomotion while walking on a web, which constrains where a leg may be placed. In other words, stable locomotion on a web requires more legs than walking on the ground, which is a plane.
A spider is classed as an Arachnid, and therefore by definition will posses eight legs.
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∙ 14y agobecause if they had 6 legs they would be called octo-pods
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∙ 12y agobecause they're made like that i guess and they hav 2arms and 6legs j2luk
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∙ 14y agoSo they can defend themselves against predators. also it makes it easier to catch food
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∙ 13y agoThey have eight legs to help them move around and catch food. The little suckers on all of the long legs help to grip to things and have the same effect as a plunger.
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∙ 12y agoyes spiders do have seven sections in their legs.
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∙ 8y agoBeetles do not have eight legs. All insects have six legs. Arachnids like spiders are the ones with eight.
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How many legs do spiders have?
Spiders have 8 legs. How many legs does a spider have and how many am insect have? Spiders have 8 legs but insects have 6. How many leg parts does a spider have? 7 parts Spiders are arachnids, and therefore have eight legs. There are some insects which are called spiders, which actually are not, because they have more than .
What parts do the spiders legs join into?
in the spokes
You taught your first graders that spiders are insects - are they really?
No. Spiders are arachnids, with two body parts and eight legs. Insects have three body parts, and six legs.
Characteristics of spiders?
spiders have 8 legs and 7 eyeshope this helps you! XD
Why are spider not consider insects?
Because spiders have 8 legs and because spiders have 2 main body parts.
Is spider an insect?
No, insects typically have six legs and spiders have eight legs. And an insect had 3 body parts but spider has 2 body parts. so they are arachnids.
Why are spider not insect?
Because Spiders have 8 legs and because spiders have 2 main body parts.
How many legs do all spiders have?
A funnel spider has eight legs, as do all spiders.
Give two ways to tell an insect from a spider?
Wingless insects include silverfish and fleas, which both have six legs and a recognizable form. Spiders have eight legs and another recognizable form (divided into two parts, not many insecty segments). ^^
How may legs do spiders have?
Spiders have eight legs.
Are spiders insects as well?
No they don't. A spider has 2 body parts but an insect has 3 =)
Do all spiders and insects have the same number of body parts?
No. By definition, all spiders have eight legs. Insects have a varying number of legs (think of a centipede and millipede), but always an even number.
