14 CBSE BIOLOGY – XII SECTION — D Q.28. 1. Which one between the two will lead to inbreeding depression and why ? (ii) Label the parts 1, 2, 3 and 4. Transfer of pollen grains from anther to stigma is termed as Pollination. (iv) What is the role of the parts 2 label in diagram.OR (i) What are Chasmogamous and Cliestogamous plants ?Give one example. Why is date palm referred to as dioecious? Biology: CLASS XII: SESSION 2020-21: i.e. Answer: 8. 7. 204 PAPER I –THEORY – 70 Marks All structures (internal and external) are required ... definition of clone. (i)Autogamy is the transfer of pollen grains from anther to the stigma of the same flower. 10.What is parthenogenesis. Class 12 Biology Sexual Reproduction In Plants: Pollination: Pollination. (i) What is the diagram depicts ? CBSE previous Year Solved Papers Class 12 Biology Delhi 2011. Give Example? Mention the reason for difference in ploidy of zygote and primary endosperm nucleus in angiosperm 12.What are vegetative propagules. SET-I; ... Differentiate between geitonogamy and xenogamy in plants. (iii) Name and given one functions of the hormone secreted by the parts 3. Pollination types: Fig: Types of Pollination. What is the advantage of production of the two types of flowers on a same plant ? 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. Practising given Class 12 Biology Chapterwise Important Questions with solutions will help in scoring more marks in your Board Examinations. 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. What are … 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 ISC Class 12 Biology Syllabus. Hii !! Anthers and the stigma lie close to each other in a way that self-pollination occurs, i.e. Define external fertilization? CBSE previous Year Solved Papers Class 12 Biology Delhi 2011. Compare monoecious&dioeciousplants ? ... Xenogamy. 9. Contents. November 5, 2016 by Nirmala Leave a Comment. Vegetative propagation – definition, vegetative propagules (tuber of potato, ... xenogamy), adaptations in flowers pollinated by wind, water and insects. 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 Parthenocarpy. This transfer of pollen grains occurs with the help of pollinating agents like wind, water, insects, birds etc. 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. 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 !I am Faiz Azmi In this video, I thoroughly discussed about geitnogamy and xenogamy ways of pollination. What is a meiocyte? Sexual Reproduction in Flowering Plants Important Questions for CBSE Class 12 Biology Pollination. 11. 1.Pollination is the transfer of pollen grains from anther to the stigma of a pistil. Mention its disadvantages ? I am Faiz Azmi in this video, I thoroughly discussed about and. Are … Sexual Reproduction in Plants: Pollination a Comment and why SESSION 2020-21: i.e Board. 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