Details

Title: !Fishes 2

Description: Sensory Perception:Vision

Total Flash Cards: 5

Created: 11/10/2009 20:58:49

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Additional Biology Flashcards

Cards in this set:

Term
Living in lighted environments
 Definition
most fishes have well developed eyes
Term
Eye structure
 Definition
like other verts
Term
cornea and aqueous humor
 Definition
same optic density as water so all refraction performed by lens
Term
adaptations for vision in water
 Definition
sperical shape: focus in water(compensate for refraction); protruding position: enhances field of view; off-centered: provides for near and farsighted sighted views
Term
problems for fish vision
 Definition
density of water absorbs light diff than atmosphere; water dim medium due to high absorbtive capacity, 10% or more lost; water absorbs long wavelength(low freq) more readily than short wave length; red drops out in shallow water, blue penetrates to greatest depths