An irregular mode of reproduction resulting in the development of an embryo without fertilisation is called I. parthenogenesis II. apogamy III. sporophytic budding Select the correct answer using the code given below.

Step-by-step solution

In parthenogenesis formation of fruit occurs without fertilisation. In apogamy haploid (n) vegetative cell forms embryo without gametogenesis and fertilisation. In sporophytic budding diploid (2n) vegetative cell forms embryo from bud by vegetative reproduction. Thus, all of these processes are irregular modes of reproduction.