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Search Results for: tropic

Tropic

tropic 1. (Science: suffix) A turning toward, having an affinity for. Compare: -trophic. Origin: G. Trope, a turning 2.... Read More

Principles of Hormonal Control Systems

Hormones are chemical messengers that enter the blood directly upon their secretion from endocrine glands. A single gland or... Read More

Dominant species

Definition noun The species that predominates in an ecological community, particularly when they are most numerous or form... Read More

Stimulus

We can detect hot or cold environments using our sense of temperature. When the temperature is too hot, sweating... Read More

Predation

In ecology, predation is a mechanism of population control. Thus, when the number of predators is scarce the number of... Read More

Nastic movement

Definition noun, plural: nastic movements The non-directional movement (of plants) in response to a stimulus (e.g. humidity,... Read More

Nyctinasty

Definition noun, plural: nyctinasties (botany) The nastic movement of plant parts such as leaves and petals in response to... Read More