Concept:Intergeneric hybridisation is the cross between two individuals from different genera (plural of genus). It combines genetic material from distinct genera to create a hybrid.Explanation:The word "intergeneric" means between genera. In biology, genus is a rank above species. Crosses between different species of the same genus are called interspecific hybridisation, not intergeneric. Crosses between different varieties of the same species are called varietal hybridisation. Crosses between plants and animals are biologically impossible and not a relevant option. Therefore, intergeneric hybridisation specifically refers to crossing between two different genera. This technique is often used in plant breeding to introduce novel traits and improve resilience.Answer:D. Crossing between different genera