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Two major types of imageformirg eyes have evolved in invertebrates: the
compound eye and the single-lens eye. Compound eyes are found in insects and
crustaceans (phylum Arthropoda) and in some polychaete worms (phylum
Among invertebrates, singlelens eyes are found in some jellies, polychaetes,
spiders, and many molluscs. A single-lens eye works on a camera-like princip e.
The eye of an octopus or squid, for example, has a srnal opening, the pupil,
The image formed by a compourid eye is a mosaic of dots produced by different
intensit'es of light eritering the many ommatidia from different angles. Figure
49.17 Compound eyes. l the vertebrate lineage and differ 'rom the single-lens
eyes of ...
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I wasn't going to review Biology by Neil A. Campbell, because well... 1. It's ubiquitous. 2. I studied from the sixth edition in high school for Biology AP and the eighth edition for first-year ... Read full review
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This is a fabulous book. It also came with access to a free digital copy of the book, which was very handy. Read full review