Question

¤¤¤ How does a pistil recognise the right type of pollen ?



¤¤¤ Why emasculation is not required in unisexual flowers?

▪▪ Class 12th​

Answer 1

HI MATE!

HERE IS UR ANSWER:

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• The ability of the pistil to recognise the pollen followed by its acceptance or rejection is the result of a continuous dialogue between pollen grain and the pistil.  In such plants, the generative cell divides and forms the two male gametes during the growth of pollen tube in the stigma.

• Emasculation is done to avoid self-pollination.But unisexual plants have either stamen or pistil. So, in that case only cross pollination is possible and hence emasculation is not reqiured in unisexual plants.

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HOPE IT HELPS!!

PLZ MARK AS BRAINLIEST:-)

Answer 2

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1. The ability of the pistil to recognize the pollen is followed by its acceptance or rejection. It isthe result of a continuous dialogue between pollen grain and the pistil mediated by chemicalcomponents of the pollen interacting with those of the pistils.
2. Emasculation is done to prevent self-pollination and since unisexual have only one type of flowers, therefore only one gamete is produced so emasculation is not required here to prevent self-pollination.

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