Class-12CBSE Board - Outbreeding Devices and Pollen-Pistil Interaction - LearnNext offers animated video lessons with neatly explained examples, Study Material, FREE … Describe any two devices in a flowering plant which prevent both autogamy and geitonogamy. Thus plants are adapted to promote cross-pollination. explain any three inbreeding devices in flowering plant. asked Dec 7, 2018 in Biology by kajalk (77.6k points) cbse; class-12; 0 votes. Continuous self-pollination results in inbreeding depression. Artificial pollination- When stigma from emasculated flower becomes mature it is … 1 answer. continued self pollination leads to inbreeding depression list three devices which flowering plants have developed to discourage self pollination - - TopperLearning.com | bhl4jvqll Flowering plants have developed many devices to discourage self-pollination and to encourage cross-pollination. Ans. This also results in homozygous genes. Concept: Pre-fertilisation - Structures and Events - Pollination. 1. The first two plants show the dioecious condition in which male and female flowers are borne on separate plants while the fourth plant exhibits monoecy, where male and female flowers are borne on the same plant. Pink flower = female flower; Blue flower = male flower; Bicolored flower = bisexual/hermaphrodite flower. List three devices, which flowering plant have developed to discourage self pollination? The main aim is to prevent self- pollination and is done with the help of forceps. Make a list of any three outbreeding devices that flowering plants have developed and explain how they help to encourage cross-pollination. Outbreeding devices : Majority of flowering plants produces hermaphrodite flowers which undergo self-pollination. Because the majority of flowering plants produce hermaphrodite flowers and are likely to come in contact with the stigma of the same flower. This process is known as budding. Fig.4.1.Terminology. Three inbreeding techniques in flowering plant are :- Emasculation- It is technique that involves removal of anthers from the flower buds before it splits apart in bisexual flowers. This is done by enclosing the emasculated flowers in muslin, oil, paper or polythene bag. Outbreeding Devices. This is known as outbreeding. In some species, pollen release and stigma recepitivity are not synchronized. Flowering plant have developed many devices to discourage self-pollination to encourage cross-pollination. Explain any two devices by which autogamy is prevented in flowering plants. Plant species were classified pertaining to the nourishment of organisms into three categories: (i) autotroph, plant that makes its own food, (ii) hemiparasite and parasite, partial or total parasite that obtains its nourishment from a living plant and (iii) insectivore, plant that obtains partially its … In some other species, the anther and stigma are placed at different position. 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