The insect Blastophaga grossorum is associated with the pollination of
Mango
Paddy
Beans
Ficus
$A$ : Certain proteins of pollen origin identifies the compatible stigma.
$R$ : Compatibility proteins are found located in ektexine.
Crassinucellate ovule shows
Majority of pollen grains are shed at
The diagram below shows a fertilised ovule and carpelWhich numbers represent the structures which will become
$(i)$ The future embryo
$(ii)$ The future testa
$(iii)$ The future micropyle of the seeds
$(i) (ii) (iii) $ respectively
A typical angiosperm embryo sac at maturity has