Search Results for: vision
Monocular vision
Definition noun (1) (zoology) A type of vision in which one eye of the animal moves and sees objects independently of the... Read More
Binocular vision
Definition noun (1) (zoology) A type of vision wherein both eyes of an animal are used at the same time (as opposed to... Read More
Young-helmholtz theory of colour vision
'''Young-helmholtz theory of color vision A theory that there are three perceiving elements in the retina: red, green, and... Read More
Blindness – Evolutionary regression? Maybe not!
The recent Netflix's hit flick, Bird Box, surely startled the viewers with the thrilling scenarios revolving around the... Read More
Sensory Systems
A sensory system is a part of the nervous system consisting of sensory receptors that receive stimuli from the internal and... Read More
Mutualistic symbiosis
Mutualistic Symbiosis Definition In order to understand what a mutualistic symbiotic relationship means, we will break down... Read More
Chlorophyll
Why are most plants green? Have you ever had the same question? Perhaps, you’ve been told that the plants are green... Read More
Quadrantanopia
Definition noun, plural: quadrantanopias A visual field defect characterized by a loss of vision in a quarter section of the... Read More
Degenerative disease
Degenerative Disease Definition A degenerative disease is defined as a disease characterized by the worsening condition due... Read More
Human Perception – Neurology
A better understanding of human perception unlocks the key to how the mind works, an advantage when working with people with... Read More
A Balanced Vitamin Diet – Vitamins A – K
As mentioned in the previous tutorial, a balanced diet is essential to a healthy organism. Deficiencies in particular... Read More
Domestic cat
Definition noun, plural: domestic cats A small domesticated Felis species, e.g. F. domestica or F. catus Supplement The... Read More
![Hallucinations – a brain glitch – apparently could occur in animals, too. At least, according to a recent experiment on lab mice using optogenetics technique. [Img credit: Rick Harris (Flickr), by CC BY-SA 2.0]](https://www.biologyonline.com/wp-content/uploads/2019/07/hallucination-300x168.jpg)
Hallucination – Are we the only ones “seeing” things or animals hallucinate, too?
Hallucination is defined as perceiving something that seems real but in fact, it is not. Some references take it as a... Read More
Inbreeding
Inbreeding is a type of breeding or mating where closely related individuals with a common ancestor produce progenies with... Read More
Adaptation
Adaptation Definition In biology and ecology, adaptation refers to the process of adjusting behavior, physiology, or... Read More
Stationary
stationary 1. Not moving; not appearing to move; stable; fixed. Charles Wesley, who is a more stationary man, does not... Read More
Neuroscience
Definition noun The branch of science that deals with the nervous system, particularly structure, development, function,... Read More
Tapetum lucidum
Definition noun, plural: tapeta lucida A layer of tissue in the choroid or in the retinal pigment epithelium of the eye of... Read More
Philippine tarsier
Definition noun, plural: Philippine tarsiers A tarsier species endemic to the islands of the Philippines Supplement Tarsiers... Read More
Analogous structures
Analogous Structures Definition In evolutionary biology, analogous structures are biological structures having similar or... Read More
Degenerate
Degenerate means to become worse or less of its kind or former state. In biology, it means an entity performs the same... Read More
Wagners syndrome
Definition noun (1) A degenerative condition of the vitreous and retinal parts of the eye, and may eventually lead to... Read More
Equilibrioception
Definition noun, plural: The sense of balance in humans and animals that involves visual system, vestibular system, and... Read More