2006-10-28 01:35:44 · 19 answers · asked by chris g 1 in Science & Mathematics ➔ Biology
that depends on what spider it is. Some have 8 eyes, some have 6 some have 4 and some have 2
2006-10-28 01:40:15 · answer #1 · answered by sugarplum9903 4 · 0⤊ 0⤋
Spiders belong to a group of animals known as 'Arachnids'.
Spiders have 2 parts of the body. The front half, (scientifically known as the cephalothorax) is the part which the legs, the EYES and the palps are attached to.
The no of eyes varies from one spider to another. The most common number of eyes, a spider will have is 8.
Although, research has shown that other spiders have 6, 4, 2, 1, or no eyes.
The commonest no of eyes is six and no eyes, after the most common, eight.
The way the eyes are arranged can help scientists work out what kind of a spider it is.
Spiders usually have some eyes on top of their head and some more in front. With all those eyes, it is a bit surprising that they usually don't have good eyesight!
Instead, they probably just see light and dark shapes moving around when they are hunting. They make up for the poor sight with an excellent ability to sense vibration and taste.
One exception to the bad eyesight rule is the group of jumping spiders, which see really well.
They have very big eyes on the front of their head.
These jumping spiders use different eyes at different stages of their hunt.
2006-10-28 04:02:24 · answer #2 · answered by cookie 3 · 0⤊ 0⤋
8
2006-10-28 04:44:07 · answer #3 · answered by Anonymous · 0⤊ 0⤋
8
2006-10-28 02:24:15 · answer #4 · answered by Ms.Marian 1 · 0⤊ 0⤋
Spiders usually have eight eyes in various arrangements, a fact which is used to aid in taxonomically classifying different species. Most species of the Haplogynae have six eyes, although some have eight (Plectreuridae), four (eg., Tetrablemma) or even two (most Caponiidae) eyes. Sometimes one pair of eyes is more well developed than the rest, or even, in some cave species, there are no eyes at all. Several families of hunting spiders, such as jumping spiders and wolf spiders, have fair to excellent vision. The main pair of eyes in jumping spiders even sees in colors.
Net-casting spiders have enormous, compound lenses that give a wide field of view and gather available light very efficiently.
2006-10-28 01:45:22 · answer #5 · answered by akhil sasidharan 2 · 0⤊ 0⤋
Spiders usually have eight eyes in various arrangements, a fact which is used to aid in taxonomically classifying different species. Most species of the Haplogynae have six eyes, although some have eight (Plectreuridae), four (eg., Tetrablemma) or even two (most Caponiidae) eyes. Sometimes one pair of eyes is more well developed than the rest, or even, in some cave species, there are no eyes at all. Several families of hunting spiders, such as jumping spiders and wolf spiders, have fair to excellent vision. The main pair of eyes in jumping spiders even sees in colors.
2006-10-28 01:44:38 · answer #6 · answered by GeLo'14 3 · 0⤊ 0⤋
Most spiders have eight simple eyes. The two main eyes of a spider each have a simple lens, and a retina which is made up of light sensitive cells whose surfaces point toward he light as it enters the eye. These main eyes have a small field of vision with high resolution. They are especially well developed in jumping spiders. A spider's secondary eyes are light sensitive and are used to detect shadows and the difference between light and dark.
2006-10-28 01:48:11 · answer #7 · answered by mr t 2 · 0⤊ 0⤋
Yep depends on spider but say 8
2006-10-28 01:54:22 · answer #8 · answered by Ley 2 · 0⤊ 0⤋
In general spiders have eight eyes
2006-10-28 01:39:01 · answer #9 · answered by tfd 4 · 0⤊ 0⤋
spiders have in general 8 eyes in various arrangements but there are also species with 6,4,2 and even no eyes at all
2006-10-28 02:04:02 · answer #10 · answered by Anonymous · 0⤊ 0⤋