Select the incorrect statement.

• A

  Plants undergoing nonrecurrent agamospermy generally produce non-viable seeds.
• B

  In recurrent agamospermy all the cells of embryo sac are diploid as it is directly formed from nucellar or megaspore mother cell.
• C

  In gymnosperms, polyembryony may occur due to cleavage of growing embryo.
• Correct answer
  D

  Polyembryony never occurs in mango and groundnut.

Hence, the correct answer is option: 'D'.