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

TLS Online TPP Program

#Id: 9487

#XL - R Botany

Biotrophs are Specialised (‘obligate’) pathogens

Possess appressoria or haustoria

Narrow host range

Controlled by salicylate-dependent host-defence pathways

TLS Online TPP Program

#Id: 7995

#XL - T Zoology

The habitat of an organism is the place, or physical setting, in which it lives.

TLS Online TPP Program

#Id: 9625

#XL - T Zoology

Unbound receptors are internalized at a relatively slow rate, on average once every 30 minutes, and are recycled rapidly to the plasma membrane so there is little reduction in the total number of surface receptors. 

TLS Online TPP Program

#Id: 10578

#XL - R Botany

A.W. Eichler classified the plant kingdom into two sub-kingdoms; Cryptogamae and Phanerogamae

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