Question

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.

• A. Only I
• B. Only II
• C. II and III
• D. I, II and III

Answer 1

Answer: (D)

I, II and III

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

So, the correct answer is option D.