Monday, May 24, 2010

How many eyes does a spider have?

Talking about your average day to day spider that comes into your house!
Answers:
. Most spiders have eight eyes, some 6. But there are spiders with no eyes, 2, 4 and up to even 12 eyes. The eyes are singular and are called ocelli, unlike the insects that have compound eyes. The main pair of eyes is always the middle pair and has a different construction than the other eyes. The light sensitive cells point towards the incoming light and is therefore referred to as indirect retina. Except the crab spiders and jumping spiders, the main eyes are small or even absent in spiders with six eyes. The construction is similar to as in humans and these eyes have a high resolution. In the other eyes the light sensitive points away from the light and have an indirect retina. These secondary eyes give the spider a much broader field of vision than the main eyes and are used to give them the ability to judge distance. During hunting, these secondary eyes catch the movement of the prey and the main eyes are used to focus as it moves closer to the prey.
Spiders have 4 pairs of eyes but not all spiders.
eight eyes
1 like there's no I in TEAM. etc etc.
Last I knew they generally had 8: one on each knee.
really i thought you were talking about how many i's not eyes in SPIDER so i one going to say 1. Yes you guessed it i am BLONDE lol
i dont know
Four pairs
8 i think.
most spiders have 8 eyes

No comments:

Post a Comment