Home › NEET UG › Biology › Sexual Reproduction in Flowering Plants › The pistil's ability to discriminate between com…
The pistil's ability to discriminate between compatible and incompatible pollen depends on:
AThe size of the pollen alone
BThe shape of the stigma alone
CA chemical dialogue mediated by interactions between pollen and pistil components
DThe colour of the pollen
Answer & Solution
Correct answer: C. A chemical dialogue mediated by interactions between pollen and pistil components
**Pollen-pistil recognition** is a chemical dialogue: pollen-surface molecules interact with stigma-surface molecules → pistil decides to promote pollen-tube growth (compatible) or inhibit it (incompatible / self-incompatible).
Related questions
A mature seed has moisture of only about:Wheat, maize and castor seeds keep part of their endosperm. They are:Which develops first after double fertilisation?Continued self-pollination leads to:Insects that eat nectar without pollinating are called:Flowers pollinated by flies and beetles attract them with:Wind and water pollinated flowers are usually not colourful and do not produce:Water lily flowers rise above the water and are pollinated by: