Light sense
The ability to perceive variations in the degree of light or brightness.
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Plant Metabolism
Plants are responsible for incredible feats of molecular transformation. Plant processes, such as photosynthesis, photophosphorylation, chemiosmosis, carbon fixing reactions, respiration, are presented in this tutorial...
Growth and Plant Hormones
Plants, like animals, produce hormones to regulate plant activities, including growth. They need these hormones to respond well to their environment and to sustain growth, development, and dispersal. Plant biologists recognize five major groups of plant hormones: auxins, gibberellins, ethylene, cytokinins, and abscisic acid. Find out in this guide the importance of each hormone in the life of a plant...
Sensory Systems
A sensory system is a part of the nervous system consisting of sensory receptors that receive stimuli from the internal and external environment, neural pathways that conduct this information to the brain and parts of the brain that processes this information. Know the different sensory systems of the human body as elaborated by this tutorial...
Human Perception – Neurology
This tutorial investigates perception as two people can interpret the same thing differently. Know more about human perception in action, spatial awareness, and illusions. A better grasp of these aspects is useful in understanding how the mind works...
Insects
There are more species of insects than any other species combined. This surely illustrates that insects have the selective advantages that allow them to take the most advantage of the environment that they live in. Read more about the evolution of insects in this tutorial. Find out the reasons as to why insects enjoyed their continued existence over such a long period of time...