{"id":40537,"date":"2024-02-17T08:46:47","date_gmt":"2024-02-17T03:16:47","guid":{"rendered":"https:\/\/www.aplustopper.com\/?p=40537"},"modified":"2024-02-17T16:27:44","modified_gmt":"2024-02-17T10:57:44","slug":"plus-one-botany-chapter-wise-questions-answers-chapter-9","status":"publish","type":"post","link":"https:\/\/www.aplustopper.com\/plus-one-botany-chapter-wise-questions-answers-chapter-9\/","title":{"rendered":"Plus One Botany Chapter Wise Questions and Answers Chapter 9 Photosynthesis in Higher Plants"},"content":{"rendered":"

Kerala Plus One Botany Chapter Wise Questions and Answers Chapter 9 Photosynthesis in Higher Plants<\/h2>\n

Plus One Botany Photosynthesis in Higher Plants One Mark Questions and Answers<\/h3>\n

Question 1.
\nWhich metal ion is a constituent of chlorophyll?
\n(a) Iron
\n(b) Copper
\n(c) Magnesium
\n(d) Zinc
\nAnswer:
\n(c) Magnesium<\/p>\n

Question 2.
\nWhich pigment acts directly to convert light energy to chemical energy?
\n(a) Chlorophyll a
\n(b) Chlorophyll b
\n(c) Xanthophyll
\n(d) Carotenoid
\nAnswer:
\n(a) Chlorophyll a<\/p>\n

Question 3.
\nWhich range of wavelength (in nm) is called photosynthetically active radiation (PAR)?
\n(a) 100 – 390
\n(b) 390 – 430
\n(c) 400 – 700
\n(d) 760 – 100,00
\nAnswer:
\n(c) 400-700<\/p>\n

Question 4.
\nWhich light range is most effective in photosynthesis?
\n(a) Blue
\n(b) Green
\n(c) Red
\n(d) Violet
\nAnswer:
\n(c) Red<\/p>\n

Question 5.
\nChemosynthetic bacteria obtain energy from
\n(a) Sun
\n(b) Infra red rays
\n(c) Organic substances
\n(d) Inorganic chemicals
\nAnswer:
\n(d) Inorganic chemicals<\/p>\n

Question 6.
\nWhat is the name given to the process of splitting of water during light reaction?
\nAnswer:
\nPhotolysis<\/p>\n

Question 7.
\nWhat tissues and cells of a leaf contain the chloroplast
\nAnswer:
\nMesophyll<\/p>\n

Question 8.
\nWhat colour of visible spectrum is least effective in the process of photosynthesis?
\nAnswer:
\nGreen<\/p>\n

Question 9.
\nHow many molecules of ATP and how many molecules of NADPH are spent to fix three molecules of CO2<\/sub> in Calvin cycle?
\nAnswer:
\nATP and 6 NADPH<\/p>\n

Question 10.
\nName the two photosynthetic pigments belonging to carotenoides.
\nAnswer:
\nCarotene and xanthophylls<\/p>\n

Question 11
\nThe most abundant enzyme in the world plays a dual role in rice, tomato etc. Identify the enzyme.
\nAnswer:
\nRUBISCO<\/p>\n

Question 12
\nWhich products formed during the light reaction of photosynthesis are used to drive the dark reaction?
\nAnswer:
\nATP and NADPH2<\/sub><\/p>\n

Question 13
\nBy looking at which internal structure of a plant can you fill whether a plant is C3<\/sub> or C4<\/sub>. Explain.
\nAnswer:
\nC4<\/sub> – Plants shows kranz anatomy -chloroplast dimorphism<\/p>\n

Question 14
\nWhy does the rate of photosynthesis decrease at higher temperatures?
\nAnswer:
\nEnzymes present in stroma undergoes denaturation in the presence of high temperatures.<\/p>\n

Question 15
\nName the only natural process by which oxygen is liberated for the use of respiration.
\nAnswer:
\nBy photolysis of water during photosynthesis<\/p>\n

Plus One Botany Photosynthesis in Higher Plants Two Mark Questions and Answers<\/h3>\n

Question 1.
\nIf we study vertical sections of leaves of C3<\/sub> plant and C4<\/sub> plant, there are some anatomical differences.<\/p>\n

    \n
  1. What are the anatomical peculiarities of a C4<\/sub> plant?<\/li>\n
  2. Explain C4<\/sub> pathway by listing the main steps.<\/li>\n<\/ol>\n

    Answer:
    \n1. C4<\/sub> plants show kranz anatomy – Chloroplast dimorphism<\/p>\n

    2.
    \n\"Plus<\/p>\n

    Question 2.
    \n\"Plus
    \nThe above graph indicates absorption spectrum related to chlorophyll pigments. On the basis of. this graph answer the following.<\/p>\n

      \n
    1. The peak a & b represents for what?<\/li>\n
    2. Which pigments shows a & b peak of absorption?<\/li>\n<\/ol>\n

      Answer:<\/p>\n

        \n
      1. Absorption maxima<\/li>\n
      2. Chlorophyll<\/li>\n<\/ol>\n

        Question 3.
        \nC4<\/sub> cycle is called so because of the presence of a C4<\/sub> acid in this cycle.<\/p>\n

          \n
        1. Name that C4<\/sub> acid.<\/li>\n
        2. How does it form?<\/li>\n<\/ol>\n

          Answer:<\/p>\n

            \n
          1. Oxalic acetic acid.<\/li>\n
          2. It is formed by combining CO2<\/sub> with PEP in the presence of PEP case enzyme.<\/li>\n<\/ol>\n

            Question 4
            \nThe response of plant towards periods of day\/night is termed as photo peroidism’.<\/p>\n

              \n
            1. Mention three plant groups based on photoperiodism.<\/li>\n
            2. Would a defoliated plant respond to the photoperiodic cycle? Why?<\/li>\n<\/ol>\n

              Answer:<\/p>\n

                \n
              1. Long day plants, short-day plants, day-neutral plants.<\/li>\n
              2. No. Photo periodic receptors are located in leaves.<\/li>\n<\/ol>\n

                Question 5
                \nMelvin Calvin was awarded the nobel prize in 1961 for the discovery of one of the most important biological process in nature.<\/p>\n

                  \n
                1. Name the process.<\/li>\n
                2. Name site for photosynthesis.<\/li>\n<\/ol>\n

                  Answer:<\/p>\n

                    \n
                  1. C3<\/sub> cycle<\/li>\n
                  2. Chloroplast<\/li>\n<\/ol>\n

                    Question 6
                    \nAnalysis the given and write down the photosynthetic response of the C3<\/sub> and C4<\/sub> plant in terms of CO2<\/sub> concentration.
                    \n\"Plus
                    \nAnswer:
                    \nHigh light intensity induces the opening of stoma. When stoma opens CO2<\/sub> uptake increases. At high CO2<\/sub> concentration, the rate of photosynthesis becomes high under high light in both C3<\/sub> and C4<\/sub> plants.<\/p>\n

                    Question 7.
                    \nC4<\/sub> plants have a special type of anatomy in leaves to avoid photorespiration.<\/p>\n

                      \n
                    1. What is the special anatomy called?<\/li>\n
                    2. Name any two plants having this anatomy.<\/li>\n<\/ol>\n

                      Answer:<\/p>\n

                        \n
                      1. Kranz<\/li>\n
                      2. Wheat, Sugarcane<\/li>\n<\/ol>\n

                        Question 8.
                        \nFill up the blanks:<\/p>\n

                          \n
                        1. Oxygen liberated during photosynthesis comes from …………<\/li>\n
                        2. Inhibition of lateral buds growth by terminal bud is known as …………<\/li>\n<\/ol>\n

                          Answer:<\/p>\n

                            \n
                          1. Water<\/li>\n
                          2. Apical dominance<\/li>\n<\/ol>\n

                            Question 9.
                            \n\"Plus
                            \nBased on the above diagram answer the following questions.
                            \ni) Write the steps of
                            \na) Carboxylation
                            \nb) Reduction
                            \nc) regeneration
                            \nii) Name the major enzyme involved in C3<\/sub> pathway.
                            \nAnswer:
                            \n\"Plus<\/p>\n

                            Question 10.
                            \nGive the diagram of a chloroplast and label the following parts.<\/p>\n