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The eyespot apparatus (or stigma) is a photoreceptive organelle found in the flagellate or (motile) cells of green algae and other unicellular photosynthetic organisms such as euglenids. It allows the cells to sense light direction and intensity and respond to it, prompting the organism to either swim towards the light (positive phototaxis ...
Eyespot (mimicry), a color mark that looks somewhat like an eye; Eyespot, a sensory organ of invertebrates; see simple eye in invertebrates; Eyespot, a type of eye in some gastropods, a part of sensory organs of gastropods; Eyespot apparatus, a photoreceptive organelle found in the flagellate (motile) cells unicellular photosynthetic organisms
An eyespot (sometimes ocellus) is an eye-like marking. They are found in butterflies, reptiles, cats, birds and fish. Eyespots could be explained in at least three different ways. They may be a form of mimicry in which a spot on the body of an animal resembles an eye of a different animal, to deceive potential predator or prey species.
For a human eye with excellent acuity, the maximum theoretical resolution is 50 CPD [43] (1.2 arcminute per line pair, or a 0.35 mm line pair, at 1 m). A rat can resolve only about 1 to 2 CPD. [ 44 ] A horse has higher acuity through most of the visual field of its eyes than a human has, but does not match the high acuity of the human eye's ...
Many insects including hoverflies (C, D, E) and the wasp beetle (F) are Batesian mimics of stinging wasps (A, B), which are Müllerian mimics of each other.. In evolutionary biology, mimicry is an evolved resemblance between an organism and another object, often an organism of another species.
– The light verb had cannot take not as a postdependent. Light verbs differ from full verbs in that light verbs lack the semantic content that full verbs have. Full verbs are the core of a predicate, whereas light verbs form a predicate with another expression (often a noun) with full semantic content.
The pupil of the human eye can range in size from 2 mm to over 8 mm to adapt to the environment. The human eye can detect a luminance from 10 −6 cd/m 2, or one millionth (0.000001) of a candela per square meter to 10 8 cd/m 2 or one hundred million (100,000,000) candelas per square meter.
li-yaf‘al-hu to-do. JUS. 3SG. MASC -it li-yaf‘al-hu to-do.JUS.3SG.MASC-it 'Have him do it.' A further use of this mood is in negative commands. لا تأخذ ذلك اللحم lā not ta’xudh take. JUS. 2SG. MASC dhālika that l-laḥm the-meat lā ta’xudh dhālika l-laḥm not take.JUS.2SG.MASC that the-meat 'Don't take that meat.' The jussive form is also used in past tense sentences ...