Q.What do you mean by Polyembryony? Give one example. (1+1) OR Bartholin gland is the characteristic of which reproductive system? By activity of which hormone milk secretion starts? (1+1)

Apomixis and Polyembryony

Apomixis is a form of asexual reproduction that mimics sexual reproduction: seeds are formed without fertilisation (without meiosis and syngamy), so the offspring are genetically identical to the mother plant. It is common in some grasses and Asteraceae. Like vegetative reproduction, apomixis produces progeny identical to the parent, but through seeds it bypasses the normal fertilisation step of the flowering plant.

Polyembryony is the occurrence of more than one embryo in a single seed. It arises when, besides the zygotic embryo, additional embryos develop from the nucellus or integument (nucellar polyembryony). Well-known examples include Citrus and Mango. …