BIO 311D
University Of Texas - Austin
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Exam (elaborations)
BIO 311D - Final Exam Study Guide.
BIO 311D - Final Exam Study Guide. 
Handout 16 – competing plant & animal defense systems 
Body structures for anti-predator defenses: 
 
Plants – thorns, sticky microscopic hairs on leaves irritating to insects, toxic oils (poison ivy) 
 
Animals – structures (hard shell), behavior, coloration (camouflage or warning coloration such as coral snakes or bees = protective or warning coloration & mimics that are harmless but resemble a harmful animal) 
 
How long can mimics continue their char...
Exam (elaborations)
BIO 311D - Exam 2 Review.
BIO 311D - Exam 2 Review. 
1. Populations 
Population definition: a group of interbreeding individuals 
-group of individuals of the same species that lives and reproduces from year to year in a 
particular location (lecture) 
Population size is dependent on growth factors 
● Exponential growth 
○ Resources are plentiful 
○ Influenced by birth rate and death rate 
○ Proportional to the size of the population