We hope that if the question comes-describe pollen pistil interaction, you’ll be able to answer.
Pollen pistil interaction is the process of transfer of pollen grains of one plant to the pistil/stigma of the same or different plant, which can be either self or cross-pollination. The pistil is the female reproductive part of a flowering plant, while pollen grains are the male reproductive part of a plant. Pollination is the first step of pollen pistil interaction, followed by the pollen adhesion to the stigma. We hope that if the question comes-describe pollen pistil interaction, you’ll be able to answer. Now, we’ll be heading towards our next section, which is a pretty interesting one: the concept of Outbreeding devices in plants. Outbreeding Devices The section is related to the concept of Outbreeding devices and the relationship between pollen pistil interaction and Outbreeding devices. Before proceeding to the types of Outbreeding devices, let’s understand what Outbreeding devices are. Outbreeding Devices Meaning Outbreeding devices are the mechanisms/processes which the plants adapt to prevent self-pollination. But why do plants use such devices? Here are the reasons: Reasons for Outbreeding Mechanism
Now, let’s get into the prime topic of the section- the types of Outbreeding devices. Outbreeding Devices (Explain Outbreeding Devices) There are several devices which the plants adapt to promote cross-pollination, which are enumerated below: Unisexuality: Unisexuality is an Outbreeding device in which the plant bears, either male or female flowers. Besides, the flower is also not hermaphrodite. This is also known as Dioecism. Dichogamy: In this Outbreeding device, the stigma and the anther have different maturity times. Thus, depending upon the maturity, Dichogamy can be classified into two types:
Herkogamy: Herkogamy is a naturally occurring condition where there is a natural physical barrier to the entry of pollen grains into the ovaries. Self-Sterility: In this Outbreeding device, the plant possesses a gene to recognize similar genes and doesn’t allow the pollen grain to germinate. The self-sterile gene is present in the ovule and the grain. Heterostyly: In this Outbreeding device, the stigma and the anther differ in levels, preventing the pollen grain to reach the stigma and pollinating it. Pollen Prepotency: In pollen prepotency, a different flower’s pollen matures faster than that of the same flower, thus helps in preventing autogamy. These are the Outbreeding devices in plants. Now, if the question comes- Explain pollen pistil interaction and Outbreeding devices, you will be able to answer easily. The next section is the final section of the discussion and enumerates the steps of pollen pistil interaction. Fun Facts: Steps of Pollen Pistil Interaction Pollination doesn’t always mean fertilization. For the pollination to occur, the pistil needs to recognize the pollen grain of the same species. Pollen pistil interaction is not a small process. Thus, we need to understand the complete process of pollen pistil interaction, which results in successful fertilization. Enumerated below are the steps of pollen pistil interaction:
This is the complete process of the pollen pistil interaction process that is required for successful fertilization. We hope that all the concepts related to pollen pistil interactions and Outbreeding devices in plants are pretty much clear. We’ll be ending the description with some of the Frequently Asked Questions (FAQs).
Ans. The following are the three Outbreeding devices used by plants for the prevention of self-pollination: Unisexuality: In sexuality, the plant bears, either male or female flowers. Also, the flower is not hermaphrodite. This is also known as Dioecism. Dichogamy: In this mechanism, the stigma and the anther have different maturity times. Thus, depending upon the maturity, Dichogamy can be classified into two types:
Ans. Outbreeding devices are the mechanisms/processes which the plants adapt to prevent self-pollination. Reasons for Outbreeding Mechanism
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