Before discussing insect-pollinated and wind-pollinated flowers, it is necessary to know what pollination is. Students without any knowledge on pollination are incapable of understanding the differences between insect-pollinated and wind-pollinated flowers. So, pollination is considered as a natural process where pollen grains are transferred from anther ( the male reproductive part) to the stigma (the female reproductive part) of a flower. The process can get carried out within the flowers or between flowers of the same plant or flowers of different plants.
Pollination is considered as the sexual method of reproducing in all plants that are in existence. This process permits the fertilization process in every plant. In this pollination process, the genetic information of spermatophytes or the seed plants gets transferred to its next-generation just like other living organisms.
[Image will be Uploaded Soon]
Pollination is classified into two different types based on the transfer of pollen grains:-
The initial type of pollination is termed as self-pollination. This type of pollination occurs when pollen grains get transferred from the anther to the stigma in the same flower. Some of the best examples of self-pollinated flowers are Sunflower and Orchids.
The complex type of pollination is termed as cross-pollination. This type of pollination occurs when pollen grains get transferred from the anther of a flower to the stigma of another flower. Some of the best examples of cross-pollinated flowers are Tulips, Dandelions and Daffodils.
Insect pollinated flowers are those flowers which rely on insects ( e.g. bees, butterflies), birds (e.g. sunbird, hummingbird) and animals (e.g. bats) to transfer the pollen grains from the anther of one flower to the stigma of another flower. Some insect-pollinated flower examples are Sunflowers, Orchids and Buddleja.
These flowers are large with brightly coloured petals to attract insects.
These flowers have a sweet smell and a good fragrance due to the presence of nectar.
Stigmas in these flowers are small and compact.
Stamens are located in the interiors of the flower, and they are not pendulous. This helps the pollens to get stuck with the agent as they brush against the anthers.
Wind pollinated flowers are those flowers which transfer pollen grains from the anther to the sigma by using wind as an agent. This type of pollination occurs when the flower becomes mature, and the pollen grains get blown away by the wind. In this case, many pollen grains get wasted as they fall in all sorts of places. Those pollen grains which fall in the stigma of other flowers cause pollination. Some wind-pollinated flowers examples are the common catkins, dioecious pussy willow and dandelion flowers.
These types of flowers are small and not so bright, and they seem dull. They don’t have any fragrance also.
They have long anthers which are protruding out of the flower to help pollen grains to blow off easily.
These flowers can produce a large quantity of pollen.
The pollen grains in these flowers are light which makes it easy to carry them.
1. How are Wind-pollinated Plants Adapted?
Answer: Wind pollinated plants are adapted in a way so that they can allow the wind to transfer their pollen grains from anther to stigma. These types of plants are not brightly coloured and are very dull because these features of plants are useless in case of wind pollination. Wind pollinated plants do not have a good smell also as they don't have to attract the insects for transferring their pollen. In these plants, a lot of pollen gets wasted because a large number of pollens are produced in these plants. Some names of wind-pollinated plants are dioecious pussy willow and dandelion flowers.
2. What's the Importance of Knowing the Difference Between Pollinated Plants?
Answer: Students who are interested in pursuing their career in this biological field must have basic knowledge of what pollination is. The above article gives a detailed overview of what pollution is and what are its types. Students most importantly should learn the difference between insect-pollinated plants and wind-pollinated plants so that they can understand how the pollen grains are transferred in each case. The student will also learn about the characteristics of these plants that will help him/her in advance chapters that are still to come. This study of difference is necessary to secure good marks.