Ommatidia
Arthropods which possess 8 legs belong to sub phylum Arachnida . They include spiders , scorpions and mites .
A hard outer body covering called an exoskeleton.Specialized mouth partsJointed legsCompound EyesSegmented body
Characteristics of arthropods: 1 - a hard outer body covering called an exoskeleton 2 - specialized mouth parts 3 - jointed legs 4 - compound eyes 5 - segmented body 6 - bilateral symmetry 7 - a tubular alimentary canal, with mouth and anus 8 - respiration by means of gills, tracheae and spiracles
All arthropods have the followingcharacteristics.1. A hard outer body covering called an exoskeleton.2. Specialized mouth parts3. Jointed legs4. Compound Eyes5. Segmented body__ Nissy 2012
It is not likely that the annelids evolved from the arthropods is as much as they are the much simpler of the two groups of organisms. The arthropods have a well developed open circulatory system, segmented muscles and a complex nervous system (including eyes and chemoreceptors, the antennae) and an exoskeleton.
Compound Eyes
You might be talking about "ocelli". It means "one single eye". Some arthropods (insects among them) have compound eyes and ocellis, which means that have eyes that have many smaller eye-like units= compound eyes, and also ocellis = individual eye units. For instance, flies have compound eyes and spiders have many ocellis. Here is an article about it: http://en.wikipedia.org/wiki/Ocelli
Butterflies have a compound eye because they, like flies, grasshoppers, and other insects, as well as crabs and crayfish (and a ton of other things!) are arthropods. All arthropods have compound eyes, in contrast to vertebrates, which have camera eyes.
Arthropods which possess 8 legs belong to sub phylum Arachnida . They include spiders , scorpions and mites .
The compound eye with many little eyes making up one image in the brain. Note that next to the two main compound eyes there may also be little separate eyes, or ocelli - three is a common number for those, sitting in between the two large eyes.
they have two eyes. These are called facet eyes. all flies have more then two eyes, most have two compound eyes and three simple ones Flies have two compound eyes. Compound eyes can consist of thousands of photoreceptor units (ommatidia), or individual eye units that focus sight in different directions.
An eye with many lenses is typically referred to as a compound eye. This type of eye is found in many arthropods, such as insects and crustaceans, and consists of numerous small units called ommatidia, each containing its own lens. Compound eyes allow for a broad field of vision and are particularly effective in detecting motion.
Compound eyes are an adaptation that enhances the vision of many arthropods, such as insects and crustaceans, by allowing them to detect motion and perceive a wide field of view. These eyes consist of thousands of individual ommatidia, each capturing light from different angles, enabling arthropods to spot predators and prey more effectively. This increased visual acuity is crucial for their survival, particularly in complex environments where quick reactions are necessary. Additionally, the ability to see polarized light aids in navigation and finding food.
Arthropod eyes can take various forms, but they are primarily classified into two types: compound eyes and simple eyes (ocelli). Compound eyes are made up of multiple lenses, giving them a faceted appearance, while simple eyes are typically more rounded and consist of a single lens. The shape and structure of these eyes can vary significantly among different arthropod species, adapting to their specific environmental needs and lifestyles.
Arthropods have armor or shells and big eyes take the dragonfly or scorpion for example
An eye with many lenses is called a compound eye. This type of eye is typically found in arthropods, such as insects and crustaceans. Compound eyes are made up of numerous small units called ommatidia, each of which contains its own lens, allowing for a wide field of view and the ability to detect motion effectively. They provide a different visual experience compared to single-lens eyes, like those found in vertebrates.
You would put it into the insect class because it has six legs, a three part body, compound eyes and one pair of antennae.