[5] (a) Describe any two devices in a flowering plant which prevent both autogamy and geitonogamy. (b) Explain the events upto double fertilisation after the pollen tube enters one of the synergids in an ovule of an angiosperm.

[5] (a) Describe any two devices in a flowering plant which prevent bo

1.	[5] (a) Describe any two devices in a flowering plant which prevent both autogamy and geitonogamy. (b) Explain the events upto double fertilisation after the pollen tube enters one of the synergids in an ovule of an angiosperm.
Answer» [5] (a) Describe any two devices in a flowering plant which prevent both autogamy and geitonogamy. (b) Explain the events upto double fertilisation after the pollen tube enters one of the synergids in an ovule of an angiosperm.