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Middle layers of the microsporangial wall
Formation of diploid embryo sac from diploid vegetative structure is called
When a diploid vegetative cell (nucellus cell) gives rise to diploid embryo sac directly, it is called apospory.
The seed in which endosperm is used by embryo is
Formation of gametophyte directly from sporophyte without meiosis is
A somatic cell in the nucellus directly forms an unreduced embryo sac and the diploid egg parthenogenetically develops into embryo i.e. formation of gametophyte from sporophyte without meiosis. It is known as Apospory and it is a type of Apomixis.
Adventive polyembryony in citrus is due to
The embryos arising from the maternal sporophyte tissues are called adventive embryos. In polyembryonate species the adventive embryo arises by the proliferation of the nucellus cells.
The point at which funiculus touches the ovule is
The suspensor
Scutellum is present in the embryo of
Single cotyledon of grass embryo is called scutellum.
Milky water of green coconut is
Ovules are attached to a parenchymatous cushion called