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Ecology BISC 322
Chapter 14
10
Biology
Undergraduate 2
03/24/2009

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Term
Types of exploitative interactions
Definition
Herbivore-Plant
Predator-Prey
Parasite/Pathogen-Host
Term
Predator
Definition
An Animal that feed on other animals, kills and consumes
Term
Parasite
Definition
organism that lives on the tissues of their host, ofen reducing the fitness of the host, but generally not killing it.
Term
Parasitoid
Definition
An insect whose larva consumes its host and kills it in the process, (functionally equivalent to predators)
Term
Pathogen
Definition
Cause disease, a debilitating condition, in its host
Term
Negative Phototaxis
Definition
movement of an organism away from light
Term
Positive Phototaxis
Definition
movement of an organism towards light
Term
Meristematic Tissue
Definition
The actively dividing tissue responsible for plant growth
Term
Masting
Definition
the synchronous production of large quantities of fruits by trees, such as oaks and beech.
Term
Combined Response
Definition
the combined effect of functional and numerical responses by consumers on prey populations: determined b multiplying the number of prey eaten per predator times the number of predators per unit area, giving the number of prey eaten per unit area. Combined response is generally expressed as a percentage of the total number of prey.
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