204 PAPER I –THEORY – 70 Marks All structures (internal and external) are required ... definition of clone. Anthers and the stigma lie close to each other in a way that self-pollination occurs, i.e. (ii) Label the parts 1, 2, 3 and 4. Answer: 10.What is parthenogenesis. What are … Mention the reason for difference in ploidy of zygote and primary endosperm nucleus in angiosperm 12.What are vegetative propagules. (iv) What is the role of the parts 2 label in diagram.OR (i) What are Chasmogamous and Cliestogamous plants ?Give one example. Sexual Reproduction in Flowering Plants Important Questions for CBSE Class 12 Biology Pollination. (iii) Name and given one functions of the hormone secreted by the parts 3. Vegetative propagation – definition, vegetative propagules (tuber of potato, ... xenogamy), adaptations in flowers pollinated by wind, water and insects. Transfer of pollen grains from anther to stigma is termed as Pollination. Biology: CLASS XII: SESSION 2020-21: i.e. (i) What is the diagram depicts ? Mention its disadvantages ? SET-I; ... Differentiate between geitonogamy and xenogamy in plants. 8. CBSE previous Year Solved Papers Class 12 Biology Delhi 2011. ISC Class 12 Biology Syllabus. 14 CBSE BIOLOGY – XII SECTION — D Q.28. CBSE previous Year Solved Papers Class 12 Biology Delhi 2011. November 5, 2016 by Nirmala Leave a Comment. Which one between the two will lead to inbreeding depression and why ? 11. class XI session 2019-20 LESSON PLAN 2 Types of pollination (autogamy, chasmogamy, cleistogamy, Geitonogamy, xenogamy), adaptations in flowers pollinated by wind, water and insects, advantages of self and Free PDF download of Important Questions for CBSE Class 12 Biology Chapter 2 - Sexual Reproduction in Flowering Plants prepared by expert Biology teachers from the latest edition of CBSE (NCERT) books. 1. This transfer of pollen grains occurs with the help of pollinating agents like wind, water, insects, birds etc. Define geitonogamy and xenogamy and give advantage of self pollinattion and cross pollinationIn geitonogamy pollen grains of one flower of a plant moves to stig (i)Autogamy is the transfer of pollen grains from anther to the stigma of the same flower. Hii !! 9. 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. In this article we are going to discuss the important points for the Class 12 Biology chapter 2, ... Xenogamy-Transfer of pollen grains from anther to the stigma of a different plant. Class 12 Biology Sexual Reproduction In Plants: Pollination: Pollination. Give Example? Practising given Class 12 Biology Chapterwise Important Questions with solutions will help in scoring more marks in your Board Examinations. Pollination types: Fig: Types of Pollination. ... Xenogamy. Define Parthenocarpy. !I am Faiz Azmi In this video, I thoroughly discussed about geitnogamy and xenogamy ways of pollination. In order to score well in CBSE board exam 2018 result, Class 12 th students having Physics, Chemistry, Biology and Maths as one of their subjects must … Define external fertilization? Why is date palm referred to as dioecious? 1.Pollination is the transfer of pollen grains from anther to the stigma of a pistil. Contents. What is a meiocyte? 7. What is the advantage of production of the two types of flowers on a same plant ? Compare monoecious&dioeciousplants ? All structures ( internal and external ) are required... definition of.. Is the transfer of pollen grains occurs with the help of pollinating agents like wind, water,,! 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