What is self incompatibility
Self-incompatibility is a mechanism that prevents pollen from one flower from fertilizing other flowers of the same plant.
Self-incompatibility is often observed in plants belonging to such families as Solanaceae and Rosaceae..
Which one of the following is pollinated by water
Zostera is a marine seagrass in which pollination is done by water. Pollens are released in water and are captured by the stigma. This type of pollination is known as hydrophily.
Is Hydrilla pollinated by water
Pollination carried out through water is called hydrophily. … (E.g. freshwater plants like Vallisneria, Hydrilla; marine water plants like Zostera). Light unwettable pollen grains are present in these plants. Pollen grains are surrounded by mucilaginous covering, hence protected from wetting.
What is Dicliny
dicliny (uncountable) (botany) cross-pollination in which the flowers are either staminate (male) or pistillate (female)
Does vallisneria show Geitonogamy
Xenogamy is transfer of pollen grains from anther of one flower to stigma of another flower of a different plant, while geitonogamy is transfer of pollen grains from anther of one flower to stigma of another flower on same plant. Ans.In Vallisneria,the male flowers are released on the water surface.
Is vallisneria a Hypohydrophily
Epihydrophily can be seen in plants that are grown above the surface of water whereas the hypohydrophily can be seen in submerged plants. The example of epihydrophily is Vallisneria whereas the example of hypohydrophily is the Ceratophyllum.
What is meant by emasculation
Emasculation is the process of removing anthers from bisexual flowers without affecting the female reproductive part (pistil), which is used in various plant hybridization techniques.
What is pollination by water
Water pollinated plants are aquatic. Pollen floats on the water’s surface drifting until it contacts flowers. This is called surface hydrophily, but is relatively rare (only 2% of pollination is hydrophily). This water-aided pollination occurs in waterweeds and pondweeds.
What is pollinated by water
Pollination by water is called hydrophily. Plants, which occur below the water level are called sub-merged polants. When pollination occurs in these plants, it is called hypohydrophily, e.g. Zostera, Najas, etc.
What is Hypohydrophily
When pollination occurs in submerged plants, it is called hypohydrophily. For example, Ceratophyllum. In Ceratophyllum, the male flowers break and reach the surface of water and dehisce there. The pollen grains then sink in the water and come in contact with the stigma and pollination occurs under water.
Which of the following plant is not pollinated by water
Solution : Cannabis is a wind pollinated plant.
How does pollination occur in vallisneria
Pollination in Vallisneria is epihydriphilous. It is a type of hydrophily which occurs on the surface of water. The female flower have a very long pedicel, therefore it reaches the surface of water. … They are carried passively by water currents, some of them eventually reach the female flowers and the stigma.