Plants respond to stimuli either through growth or through movement without growth. These movements or growth can either be based on the direction from which the stimulus comes or they can be independent of the direction... More »

Animals respond to stimuli by freezing in place, running away, or in the case of a change in environment, by exploring the new surroundings. Certain behaviors, such as mating or nesting, are responses to pheromone stimul... More »

When external stimuli affects an organism's nervous system, it transports the information in the form of action potentials, and then the brain processes and perceives it. External stimuli come in a variety of formats. As... More »

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The light response in plants is a complex series of triggers and feedback loops using certain proteins in the cell to prepare and process light resulting in growth, flowering and straining toward light. The proteins resp... More »

Non-vascular plants excrete excess gases produced by cellular respiration and photosynthesis through diffusion, the movement of molecules from a concentrated area to an area of low concentration. Mosses and algae excrete... More »

Photosynthesis and chemosynthesis are similar in that they both provide for the process by which plants produce food and fuel for growth. However, they differ in terms of how they provide for this process. Photosynthesis... More »

Positive impacts of aspirin on the growth and development of plants include increased seed germination percentages and longevity after being cut. Some ingredients in aspirin even help bolster the immune system of certain... More »