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TLS Online TPP Program

#Id: 5387

Density-dependent factors affect population size in relation to the population’s density.

Density-dependent factors down into two categories. 

Negative density dependence 

Positive density dependence (inverse density dependence

#XL - T Zoology #Characteristics of a population (Population Density) #Part B Pointers
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TLS Online TPP Program

#Id: 8426

#XL - T Zoology

Senescence - A gradual decrease in fecundity and an increase in the probability of mortality.
TLS Online TPP Program

#Id: 8427

#XL - T Zoology

Principle of allocation - The observation that when resources are devoted to one body structure, physiological function, or behavior, they cannot be allotted to another. 
TLS Online TPP Program

#Id: 8428

#XL - T Zoology

Natural selection will favor those individuals that allocate their resources in a way that achieves maximum fitness.
TLS Online TPP Program

#Id: 8429

#XL - T Zoology

Trade off - A giving up of one thing in return for another.
Causes of trade off
More mortality in their offspring 
Limitation of food
TLS Online TPP Program

#Id: 8430

#XL - T Zoology

1. OFFSPRING NUMBER VERSUS OFFSPRING SIZE
2. OFFSPRING NUMBER VERSUS PARENTAL CARE
3. FECUNDITY AND PARENTAL CARE VERSUS PARENTAL SURVIVAL
TLS Online TPP Program

#Id: 8431

#XL - T Zoology