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TLS Online TPP Program

#Id: 9733

For many aphids, EBF is the principal constituent of the aphid alarm pheromone, and the constitutive production of EBF by plants could hold promise in the control of specific aphid pests

#XL - R Botany #Plant Défense against Pathogen #Part B Pointers
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TLS Online TPP Program

#Id: 1972

#XL - T Zoology

Life expectancy - The average number of additional age classes an individual can expect to live at each age.
TLS Online TPP Program

#Id: 1973

#XL - T Zoology

Tx (total years lived) is calculated by summing the values of Lx in age class x and all subsequent (older) age classes.
TLS Online TPP Program

#Id: 1974

#XL - T Zoology

Quadrate method
TLS Online TPP Program

#Id: 1975

#XL - T Zoology

If this ratio R is equal to 1, then the population is randomly dispersed.

If R is significantly greater than 1, the population is evenly dispersed

If R is significantly less than 1, the population is clumped
TLS Online TPP Program

#Id: 1976

#XL - T Zoology

Abundance- Its size—the total number of individuals in the population that exist with in a defined area.
TLS Online TPP Program

#Id: 1977

#XL - T Zoology

Population density is the number of individuals per unit area. D=N/S