Question

In a type of apomixis known as adventitive embryony, embryos develop directly from

• A. Nucellus
• B. Zygote
• C. Synergids of antipodals of embryo sac
• D. Accessory embryo sac in the ovule

Answer 1

The correct option is A Nucellus

• Adventive embryony, is also known as sporophytic apomixis, sporophytic budding, or nucellar embryony.
• In this process, megagametophyte in the ovule does not give rise to embryos rather they arise from cells of the nucellus of the integument.
• It takes place without fertilization, therefore, egg cells are not involved.
  Thus, the correct answer is option A.