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प्रश्न
Geitonogamous flowering plants are genetically autogamous but functionally cross-pollinated. Justify.
उत्तर
Geitonogamy is a kind of pollination in which the pollen grains are transferred from the anther of a flower to the stigma of another flower on the same plant.
Geitonogamous flowering plants are genetically autogamous as the gametes come from the same parent plant, but since the pollen grains are being transferred to a different flower which needs a pollinating agent, it is functionally an example of cross pollination.
APPEARS IN
संबंधित प्रश्न
Make a list of any three outbreeding devices that flowering plants have developed and explain how they help to encourage cross-pollination.
Draw a diagram of a section of a megasporangium of an angiosperm and label funiculus, Micropyle, embryosac and nuclleus.
Can a unisexual flower be self pollinated?
Give one word/term for the following:
Pollination of flowers by birds.
Write different modes of pollination in detail with suitable examples.
Pollination by water occurs in ______.
Plants with ovaries having only one or a few ovules are generally pollinated by ______.
In the dioecious aquatic plant shown, identify the characteristics of the male flowers that reach the female flowers for pollination:
| Size of the flower | Colour of flower | The characteristic feature of pollen grain | |
| A | small | brightly coloured | Lightweight and non-sticky |
| B | large | colourless | large and sticky |
| C | small | white | small, covered with mucilage |
| D | large | colourless | non-sticky |
Advantage of cleistogamy is:
Which of the following floral adapation are adapted by hydrophilous flowers?
