Type III/Type IV secretion systems play a major role in transfer of bacterial Nod factor in plant cell. 

TLS Online TPP Program

#Id: 1864

#Unit 10. Ecological Principles

Exploitation competition- Organisms compete indirectly through the consumption of a limited resource.

TLS Online TPP Program

#Id: 1865

#Unit 10. Ecological Principles

Interference competition- Individuals interact directly with one another by physical force or intimidation.

TLS Online TPP Program

#Id: 1866

#Unit 10. Ecological Principles

Amensalism- One species has a strong effect on another, but the reverse effect is negligible.

TLS Online TPP Program

#Id: 1867

#Unit 10. Ecological Principles

Allelopathy- Asymmetric competition can be observed between plants, where one species produces and secretes chemicals from its roots that inhibit the growth of another species.

TLS Online TPP Program

#Id: 1868

#Unit 10. Ecological Principles

Apparent competition- Two species do not compete for the same resource but they do share at least one natural enemy.

TLS Online TPP Program

#Id: 1869

#Unit 10. Ecological Principles

Intraspecific competition should be more severe than interspecific competition, since resource overlap is greater.