{"id":37855,"date":"2019-02-16T08:41:52","date_gmt":"2019-02-16T08:41:52","guid":{"rendered":"https:\/\/cbselibrary.com\/?p=37855"},"modified":"2020-11-24T10:15:37","modified_gmt":"2020-11-24T04:45:37","slug":"plus-two-botany-chapter-wise-questions-answers-chapter-2","status":"publish","type":"post","link":"https:\/\/cbselibrary.com\/plus-two-botany-chapter-wise-questions-answers-chapter-2\/","title":{"rendered":"Plus Two Botany Chapter Wise Questions and Answers Chapter 2 Sexual Reproduction in Flowering Plants"},"content":{"rendered":"
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Plus Two Botany Chapter Wise Questions and Answers Chapter 2 Sexual Reproduction in Flowering Plants is part of Plus Two Botany Chapter Wise Questions and Answers<\/a> Kerala. Here we have given Plus Two Botany Chapter Wise Questions and Answers Chapter 2 Sexual Reproduction in Flowering Plants.<\/p>\n<\/div>\n\n\n\n\n\n\n\n\n\n\n
Board<\/strong><\/td>\nSCERT, Kerala<\/td>\n<\/tr>\n
Text Book<\/strong><\/td>\nNCERT Based<\/td>\n<\/tr>\n
Class<\/strong><\/td>\nPlus Two<\/td>\n<\/tr>\n
Subject<\/strong><\/td>\nBotany Chapter wise Questions<\/td>\n<\/tr>\n
Chapter<\/strong><\/td>\nChapter 2<\/td>\n<\/tr>\n
Chapter Name<\/strong><\/td>\nSexual Reproduction in Flowering Plants<\/td>\n<\/tr>\n
Number of Questions Solved<\/strong><\/td>\n93<\/td>\n<\/tr>\n
Category<\/strong><\/td>\nPlus Two Kerala<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Kerala Plus Two Botany Chapter Wise Questions and Answers Chapter 2\u00a0Sexual Reproduction in Flowering Plants<\/h2>\n

Plus Two Botany Sexual Reproduction in Flowering Plants One Mark Questions and Answers<\/h3>\n

Question 1.
\nTypes of pollination in Commelina is
\n(a) chasmogamy
\n(b) geitonogamy
\n(c) xenogamy
\n(d) cleistogamy
\nAnswer:
\n(d) cleistogamy<\/p>\n

Question 2.
\nWhen pollen is transferred from another of a flower to stigma of the another flower of the of the same plant, it is referred to as
\n(a) allogamy
\n(b) xenogamy
\n(c) geitonogamy
\n(d) autogamy
\nAnswer:
\n(c) geitonogamy<\/p>\n

Question 3.
\nFor plant breeding purposes: Pollens are stored at -196\u00b0C. What is the purpose behind it?
\nAnswer:
\nStored pollens can be used as pollen banks in crop breeding programmes.<\/p>\n

Question 4.
\nPollen tube enters the embryo sac through
\n(a) Integument
\n(b) Micropyle
\n(c) Calaza
\n(d) Funicle
\nAnswer:
\n(b) Micropyle<\/p>\n

Question 5.
\nIn flowering plants, fertilization occur in
\n(a) Ovary
\n(b) Embryo sac
\n(c) Nucellus
\n(d) Ovule
\nAnswer:
\n(b) Embryo sac<\/p>\n

Question 6.
\nThe source of food for developing embryo is
\n(a) Nucellus
\n(b) Ovule
\n(c) Endosperm
\n(d) Anther
\nAnswer:
\n(c) Endosperm<\/p>\n

Question 7.
\nOut of megaspre tetrad, the functional megaspore is
\n(a) Any megaspore
\n(b) Middle megaspore
\n(c) Micropylar megaspore
\n(d) Chalazal megaspre
\nAnswer:
\n(d) Chalazal megaspre<\/p>\n

Question 8.
\nHow many megaspore mothe cell are produced in a nuclellus
\n(a) 3
\n(b) 1
\n(c) 2
\n(d) 4
\nAnswer:
\n(b) 1<\/p>\n

Question 9.
\nDuring the development of monosporic development of embryo sac, the nucleus of the functional megaspore divides
\n(a) Two times
\n(b) Three times
\n(c) Onetime
\n(d) Repeatedly
\nAnswer:
\n(b) Three times<\/p>\n

Question 10.
\nCross pollination has an advantage of
\n(a) Mutation
\n(b) polyploidy formation
\n(c) Genetic recombination
\n(d) Crossing over
\nAnswer:
\n(c) Genetic recombination<\/p>\n

Question 11.
\nUnisexual flowers prevent
\n(a) Pollination
\n(b) Breeding
\n(c) Self-pollination
\n(d) Cross fertilization
\nAnswer:
\n(c) Self-pollination<\/p>\n

Question 12.
\nThe function of the filiform apparatus is
\n(a) To nourish the pollen grain
\n(b) To guide the entry of pollen tube
\n(c) To develop pollen tube
\n(d) To carry pollen tube through style
\nAnswer:
\n(b) To guide the entry of pollen tube<\/p>\n

Question 13.
\nFind the odd one. Hilum, Funicle, Intine, Integuments
\nAnswer:
\nIntine<\/p>\n

Question 14.
\nChoose the correctly matched pair.
\n(a) Coleorrhiza – Hollow foliar structure
\n(b) Perisperm- Remanents of nucellus
\n(c) Proembryo – mature embryo
\nAnswer:
\n(b) Perisperm – Remanents of nucellus<\/p>\n

Question 15.
\nChoose the correct answer. The layer of microsporangium that nourishes the developing pollen grains is
\n(a) Endothecium
\n(b) Tapetum
\n(c) Middle layer
\n(d) Epidermis
\nAnswer:
\n(b) Tapetum<\/p>\n

Question 16.
\nA typical angiosperm embryo sac at maturity is.
\n(a) 7 nucleate 8 celled
\n(b) 8 nucleate 8 celled
\n(c) 7 nucleate 7 celled
\n(d) 8 nucleate 7 celled
\nAnswer:
\n(d) 8 nucleate 7 celled<\/p>\n

Question 17.
\nThe process of formation of fruits without fertilization is called.
\n(a) Parthenogenesis
\n(b) Parthenocarpy
\n(c) Apomixis
\n(d) Autogamy
\nAnswer:
\n(b) Parthenocarpy<\/p>\n

Question 18.
\nIdentify the wrong statements regarding post – fertilization development.
\n(a) The ovary wall develops into pericarp
\n(b) The outer integument of ovule develops into tegmen
\n(c) The fusion nucleus (triple nucleus) develops into endosperm
\n(d) The ovule develops into seed
\nAnswer:
\n(b) The outer integument of ovule develops into tegmen<\/p>\n

Question 19.
\nDicot emdryo consists of
\n(a) radicle and plumule
\n(b) radicle;plumule, cotyledons and sometimes endosperm
\n(c) radicle and plumule, cotyledons and tegmen
\n(d) radicle andplumule, cotyledons tegmentesta
\nAnswer:
\n(b) radicle,plumule, cotyledons and sometimes endosperm<\/p>\n

Question 20.
\nThese process are necessary for the complete development of male gametophyte from pollen mother cell
\n(a) one meiotic and two mitotic divisions
\n(b) one meiotic cell division and one meiotic cell division
\n(c) two meiotic cell division and one mitotic cell division
\n(d) two meiotic cell division
\nAnswer:
\n(a) one meiotic and two mitotic divisions<\/p>\n

Question 21.
\nA bilobeddithecus anther has 100 microspore mother cells per micro sporangium. How many male gametophytes this anther can produce?
\nAnswer:
\n400 male gametophytes<\/p>\n

Question 22.
\nAn anther with malfunctioning tapetum often failsto produce viable male gametophytes. Give one reason.
\nAnswer:
\nTapetum nourishes developing pollen grains<\/p>\n

Plus Two Botany Sexual Reproduction in Flowering Plants Two Mark Questions and Answers<\/h3>\n

Question 1.
\nPollen grains are well preserved as fossil for many years due to some characteristics<\/p>\n

    \n
  1. Name the chemical substance present in pollen wall promote such preservation<\/li>\n
  2. Give reasons.<\/li>\n<\/ol>\n

    Answer:<\/p>\n

      \n
    1. sporopollenin<\/li>\n
    2. It is the most resistant organic material and can withstand high temperatures, strong acids, and alkali. No enzymes can degrade sporopollenin.<\/li>\n<\/ol>\n

      Question 2.
      \nOne time fertilization is the characteristic feature of majority of plants but angiosperm show two times of fertilization<\/p>\n

        \n
      1. Two fusion occurs are different. Name it and write down the number of nuclei involved in such process<\/li>\n
      2. Name the products and ploidy.<\/li>\n<\/ol>\n

        Answer:<\/p>\n

          \n
        1. Syngamy. Two nuclei Triple fusion, three nuclei<\/li>\n
        2. Zygote (2n), PEN (3n)<\/li>\n<\/ol>\n

          Question 3.
          \nCommelina, viola, and oxalis that carries both chasmogamous and Cliestogamy flowers.<\/p>\n

            \n
          1. Find out the main differences between them.<\/li>\n
          2. Give the significance of Cliestogamy.<\/li>\n<\/ol>\n

            Answer:<\/p>\n

            1. Chasmogamous flowers with exposed anthers and stigma. Cleistogamous flowers do not open at all.<\/p>\n

            2. significance of Cliestogamy:<\/p>\n