Ask your question. - 872561 1. It is of general occurrence among plants. Hypohydrophily :Plants which are pollinated inside the water e.g.Zostera, Ceratophyllum, Najas, etc. Sexual reproduction takes place in early summer, when female flowers are fertilized by drifting pollen and develop into seed-bearing shoots. Did You Know? Zostera marina, stage 1 : (a) lateral view of inflorescence with erected styles; (b,c) details of pistils with erected styles. Epihydrophily :Plants which are pollinated outside the water. The styles remain in this position until pollination takes place. 0 Thank You. In Water lily pollination takes place through wind or insect, female flower imerges above the surface of water and gets pollinated. Log in. This refers to the plant's ribbon-like appearance. Ans: In Vallisneria pollination is through hdrophilly ie through water. Biotic agents (a) Entomophily : When pollination is brought about by the agency of insects, it is known as entomophily or insect pollination. ) In Vallisneria pollination takes place by the agency of:A. WaterB. Many butterflies produce scents that attract the opposite sex. Join now. Pollination types: Fig: Types of Pollination. 206 It often happens that the style of this pistil stops bending at a point half way through the process and cannot get out of the spatha. The shoots eventually break off, float to the surface and release their seeds. e.g.Vallisneria (Ribbon weed). In Valilisneria, the female flower appear on the surface of the water as it have a long stalk. Many of these scents often smell like the flowers that they are attracted to and visit. Science. What is cross pollination? ANSWER. Related Questions: Why can't DNA polymerase be used in PCR. Adaptations to this type of pollination are the confervoid pollen ... (DUDLEY 1893) and Zostera, but in these genera completely submerged pollination occurs just as oRen. This type of pollination takes place through the agency of insects. Aerial surface pollination, whereby the pollen as well as the styles remain dry, is shown by Enhalus acoroides (L. f Zostera pollen is elongated. BirdsD. The scent of these butterfly-pollinated flowers might have evolved as an adaptation that made use of the existing attractiveness of these scents. It takes time to find another receptive flower without dedicated pollinator-transport, so eelgrass pollen has the same density as water, allowing it to drift in the current for days without floating or sinking. Join now. Secondary School. The pollen grains released by the male flower reaches to female flower for fertilisation through water currents. While mammals and birds also transfer pollen, insects are responsible for most of the pollination that takes place. 1. 8 points What is cross pollination? Entirely submerged pollination takes place in most genera. Log in. The insect-loving flower possesses various adaptations by which they attract insects and use them as carriers of pollen grains for the purpose of cross-pollination. The main such adaptations are colour, nectar and scent. 1. Insects Get the answers you need, now! POLLINATION "Pollination is defined as the process of transfer of pollen grains from anther to the stigma of the same flower or of different flower of the same species. WindC. Part of its scientific name, Zostera, means “belt” in Greek. Often smell like the flowers that they are attracted to and visit smell like the flowers that they are to... Through the agency of insects these butterfly-pollinated flowers might have evolved as an adaptation that made use the... Flower reaches to female flower appear on the surface of the existing attractiveness of butterfly-pollinated! Insects are responsible for most of the pollination that takes place. 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