NCERT Solutions For Class 11 Biology Chapter 13: Photosynthesis in Higher Plants

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NCERT Solutions for Class 11 Biology Chapter 13 Photosynthesis in Higher Plants are provided in this article. It comprises all the important definitions, concepts, and methodologies that will be really beneficial for the students appearing for CBSE Class 11 Exam 2022-23. The important topics that are included in this chapter are:

Expected no. of Questions: 1-2 questions for around 2-3 marks.

Download PDF: NCERT Solutions for Class 11 Biology Chapter 13 Photosynthesis in Higher Plants


NCERT Solutions for Class 11 Biology Chapter 13


Class 11 Biology Chapter 13 Photosynthesis in Higher Plants: Important Topics

Photosynthesis in higher plants involves additional processes, but fundamentally it remains the same. It is a physicochemical process that uses sunlight for the synthesis of organic compounds. In this process, oxygen is released into the atmosphere. 

Photosynthesis takes place in the chloroplast, found in the mesophyll cells of the leaves. There are 4 pigments involved in photosynthesis:

  • Chlorophyll a
  • Chlorophyll b
  • Xanthophylls
  • Carotenoids
  • Photophosphorylation

Photophosphorylation is the formation of ATP in the presence of sunlight. It is of two types:

  • Non-cyclic photophosphorylation
  • Cyclic photophosphorylation
  • Dark Reaction

This process takes place in the absence of light in the stroma of the chloroplasts. 

The following cycles are involved in the process:

  • Calvin Cycle (C3 Cycle)
  • C4 Cycle (Hatch and Slack Pathway)

Chapter Related Links:

Xanthophylls Photosynthesis and chemiosmotic hypothesis Difference between chlorophyll a and chlorophyll b
Kranz Anatomy Cyclic Photophosphorylation Why are Plants Green?
What is Light Reaction? Chemiosmotic Hypothesis Photorespiration

CBSE Class 11 Biology Study Guides:

CBSE CLASS XII Related Questions

  • 1.
    Explain any two basic principles/core techniques on which biotechnology is based.
    Describe any three key tools used in Recombinant DNA technology.


      • 2.
        Draw a labelled two-celled structure of male gametophyte of an angiosperm.
        Name the three layers that surround the cytoplasm of a male gametophyte starting from innermost to outermost layer.
        (iii) Which organic material makes the outermost layer? Mention its advantage.
        (iv) Why is the outermost layer of male gametophyte not continuous ?


          • 3.
            Oogenesis is a discontinuous process that begins before birth and is completed after puberty.
            Trace the development of a gamete mother cell till its release from the ovary during ovulation.
            Name the two pituitary hormones that play an important role in the process.


              • 4.
                Describe the experiment conducted by T.H. Morgan on Drosophila melanogaster involving eye colour and body colour.
                How did the results deviate from Mendelian inheritance pattern ?
                (c) Explain the two genetic terms used by Morgan for his observations.


                  • 5.
                    What is the carrying capacity of a species in a habitat?
                    Explain the growth curve that takes this capacity into account.


                      • 6.
                        Read the following passage and answer the questions that follow:
                        India is one of the megadiverse countries housing around 8·1 per cent of global species diversity, although its land area is only 2·4 per cent of the world’s land area. Many of the species are highly threatened due to human activities like deforestation, mining and habitat fragmentation. Laws like Wildlife (Protection) Act, 1972 were enacted by the Government of India to preserve our biological wealth. Various conservation measures are being implemented to save the threatened species. The following bar graph shows the number of species conserved under different biodiversity conservation methods.

                        Which other methods shown in the diagram are opposite to the one identified by you in question ? How are these two conservation approaches different?
                        (c) Write two features of Biodiversity hotspots.
                        (c) To which category do sacred groves belong and how do they help in bio-conservation?

                          CBSE CLASS XII Previous Year Papers

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