{"id":19297,"date":"2022-05-19T01:00:37","date_gmt":"2022-05-18T19:30:37","guid":{"rendered":"https:\/\/cbselibrary.com\/?p=19297"},"modified":"2023-11-10T11:27:18","modified_gmt":"2023-11-10T05:57:18","slug":"frank-icse-solutions-class-9-biology-pollination-fertilization","status":"publish","type":"post","link":"https:\/\/cbselibrary.com\/frank-icse-solutions-class-9-biology-pollination-fertilization\/","title":{"rendered":"Frank ICSE Solutions for Class 9 Biology – Pollination and Fertilization"},"content":{"rendered":"
PAGE NO: 72<\/strong><\/span><\/p>\n Solution 1:<\/strong><\/span> Solution 2:<\/strong><\/span> (i) Self-pollination<\/strong> – It is the transfer of pollens produced within the anther of a flower to the stigma of the same flower or to the stigma of another flower of the same plant. In such flowers, pollination is ensured since the flowers bear similar genetic characters. Self pollination can occur in bisexual or monoecious flowers. Examples of plants showing self pollination are Mirabilis, Arachis etc. Solution 3:<\/strong><\/span> Solution 4:<\/strong><\/span> Adaptations required by cross pollinated plants are:<\/strong><\/p>\n It is of two kinds:<\/strong><\/p>\n Solution 5:<\/strong><\/span> Solution 6:<\/strong><\/span> Solution 7:<\/strong><\/span> Solution 8:<\/strong><\/span> Solution 9:<\/strong><\/span> Solution 10:<\/strong><\/span> Solution 11:<\/strong><\/span> Solution 12:<\/strong><\/span> Frank ICSE Solutions for Class 9 Biology – Pollination and Fertilization PAGE NO: 72 Solution 1: Pollination is the transfer of pollen grains from the anther to the stigma of the same or another flower. The male gametes are produced inside pollen grains located in the anthers of androecium whereas the female gametes are produced … Read more<\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":""},"categories":[172,6442,3034],"tags":[6813,6808,6807,6823,6822,6851,6824,6811,6821],"yoast_head":"\n
\nPollination is the transfer of pollen grains from the anther to the stigma of the same or another flower.
\nThe male gametes are produced inside pollen grains located in the anthers of androecium whereas the female gametes are produced in the ovules located in the ovary of gynoecium. For forming zygote, the male gametes need to be transferred to the gynoecium for fusing with the female gametes. This is achieved through pollination. Pollination occurs through insects, wind or other agents.
\nThere are two types of pollination – Self pollination and cross pollination.<\/strong><\/p>\n
\nThe two modes of pollination are:<\/p>\n
\n(ii) Cross pollination<\/strong> – It is the transfer of pollen grains from the anthers of a flower of one plant to the stigma of a flower of another plant. Cross pollination occurs in unisexual or dioecious flowers such as papaya, maize, jasmine, rose etc.<\/p>\n
\n<\/p>\n
\nAdaptations required by self pollinated plants are:<\/p>\n\n
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\n<\/p>\n
\nFertilisation is defined as the fusion of the male and female gametes.<\/p>\n
\n<\/p>\n
\nIn angiosperms, during fertilization, one male gamete fuses with the egg cell and forms diploid zygote in a process called syngamy. The other male gamete fuses with the two polar nuclei to form a triploid nucleus called primary endosperm nucleus. This process is called triple fusion. Since fertilization takes place twice here, so this process is called double fertilization.
\nSignificance – Due to double fertilization, triploid nucleus develops into endosperm which serves as nutrition for embryo.<\/p>\n
\nFruit is a ripened ovary containing one or more seeds.<\/p>\n
\nAfter fertilization, ovary undergoes two important changes:<\/p>\n\n
\nYes, fruits are important for the plant since the seeds mature inside it. Fruits are colourful and tasty and hence eaten by animals. This helps in far and wide dispersal of the seeds.<\/p>\n
\n(i) (c) entomophily
\n(ii) (a) bats
\n(iii) (a) ornithophily
\n(iv) (a) syngamy
\n(v) (c) pomology
\n(vi) (b) true fruits
\nBiology<\/a>Chemistry<\/a>Physics<\/a>Maths<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"