Question

Which plants exhibit adventive (nucellar) polyembryony?

Options

• Casuarina and Syzygium only

• Citrus, Opuntia, and Mango

• Nymphaea, Adansia, and Orchids

• Saxifraga, Bergenia, and Ulmus

Answer 1

Citrus, Opuntia, and Mango are classic examples of plants exhibiting adventive (nucellar) polyembryony, where diploid cells of the nucellus develop directly into embryos bypassing fertilisation. These plants are commercially important, and this type of polyembryony is utilized in horticulture for asexual propagation.