Question

simple eyes and compound eyes in arthopoda with diagram

Answer 1

this is the answer or diagram u need...
The arthropods ancestrally possessed compound eyes, but the type and origin of this eye varies between groups, and some taxa have secondarily developed simple eyes. The organ's development through the lineage can be estimated by comparing groups that branched early, such as the velvet worm and horseshoe crab to the advanced eye condition found in insects and other derived arthropods.Most arthropods have at least one of two types of eye: lateral compound eyes, and smaller median ocelli, which are simple eyes.[3] When both are present, the two eye types are used in concert because each has its own advantage.[4] Some insect larvae, e.g., caterpillars, have a different type of simple eye known as (stemmata). These eyes usually provide only a rough image, but (as in sawfly larvae) they can possess resolving powers of 4 degrees of arc, be polarization sensitive and capable of increasing their absolute sensitivity at night by a factor of 1,000 or more [5] . Flying insects can remain level with either type of eye surgically removed, but the two types combine to give better performance.[4] Ocelli can detect lower light levels,[note 1][6] and have a faster response time, while compound eyes are better at detecting edges and are capable of forming imageMost species of Arthropoda with compound eyes bear just two eyes that are located separately and symmetrically, one on each side of the head. This arrangement is called dichoptic. Examples include most insects, and most of the larger species of Crustacea, such as crabs. Many other organisms, such as vertebrates and Cephalopoda are similarly and analogously dichoptic, which is the common state in animals that are members of the Bilateria and have functionally elaborate eyes. However, there are variations on that scheme. In some groups of animals whose ancestors originally were dichoptic, the eyes of modern species may be crowded together in the median plane; examples include many of the Archaeognatha. In extreme cases such eyes may fuse, effectively into a single eye, as in some of the Copepoda, notably in the genus Cyclops. One term for such an arrangement of eyes is cycloptic.