NCERT Solutions for Class 11 Biology Chapter 13 - Photosynthesis in Higher Plants

 

NCERT Solutions for Class 11 Biology Chapter 13 - Photosynthesis in Higher Plants: You may have heard that green plants make their own food by photosynthesis. During this process, carbon dioxide from the atmosphere is taken in by leaves through stomata and used for making carbohydrates, principally glucose and starch. Photosynthesis takes place only in the green parts of the plants, mainly the leaves. Within the leaves, the mesophyll cells have a large number of chloroplasts that are responsible for CO_2 fixation. Within the chloroplasts, the membranes are sites for the light reaction, while the chemosynthetic pathway occurs in the stroma. Photosynthesis has two stages: the light reaction and the carbon fixing reactions. In the light reaction, the light energy is absorbed by the pigments present in the antenna and funneled to special chlorophyll a molecule called reaction center chlorophylls.

Here are the important topics of NCERT Class 11 Biology Chapter 13 - Photosynthesis in Higher Plants mentioned below:

13.1 What do we Know?

13.2 Early Experiments

13.3 Where does Photosynthesis take place?

13.4 How many Pigments are involved in Photosynthesis?

13.5 What is Light Reaction?

13.6 The Electron Transport

    13.6.1 Splitting of Water

    13.6.2 Cyclic and Non-cyclic Photo-phosphorylation

    13.6.3 Chemiosmotic Hypothesis

13.7 Where are the ATP and NADPH Used?

    13.7.1 The Primary Acceptor of CO_2

    13.7.2 The Calvin Cycle

13.8 The C_4 Pathway

13.9 Photorespiration

13.10 Factors affecting Photosynthesis

    13.10.1 Light

    13.10.2 Carbon dioxide Concentration

    13.10.3 Temperature

    13.10.4 Water

In Chapter 13 - Photosynthesis in Higher Plants you will also study about the carbon fixation cycle, CO 2 is added by the enzyme, RuBisCO, to a 5-carbon compound RuBP that is converted to 2 molecules of 3-carbon PGA. This is then converted to sugar by the Calvin cycle, and the RuBP is regenerated. During this process, ATP and NADPH synthesized in the light reaction are utilized. RuBisCO also catalyzes a wasteful oxygenation reaction in C 3 plants: photorespiration.

After going through Class 11 Biology Chapter 13 - Photosynthesis in Higher Plants, you must be able to answer the questions which are given below:

  • Q1. RuBisCO is an enzyme that acts both as a carboxylase and oxygenase. Why do you think RuBisCO carries out more carboxylation in C 4 plants?
  • Q2. Suppose there were plants that had a high concentration of Chlorophyll-B but lacked chlorophyll a, would it carry out photosynthesis? Then why do plants have chlorophyll b and other accessory pigments?
  • Q3. Why is the colour of a leaf kept in the dark frequently yellow, or pale green? Which pigment do you think is more stable?

If you face any issue in solving these questions then don't worry NCERT Solutions for Class 11 Biology Chapter 13 - Photosynthesis in Higher Plants will help you in answering these questions by understanding the concepts behind it.

Solutions for NCERT Class 11 Biology Chapter 13 - Photosynthesis in Higher Plants will also help you in the preparation of other competitive exams like NEET and AIIMs along with your school exams.

NCERT Solutions for Class 11 Biology Chapter 13 Photosynthesis in Higher Plants- Solved Exercise Questions

 

NCERT Solutions for Class 11 Biology

Chapter-1

The Living World

Chapter-2

Biological Classification

Chapter-3

Plant Kingdom

Chapter- 4

Animal Kingdom

Chapter-5

Morphology of Flowering Plants

Chapter-6

Anatomy of Flowering Plants

Chapter-7

Structural Organisation in Animals

Chapter-8

Cell: The Unit of Life

Chapter-9

Biomolecules

Chapter-10

Cell Cycle and Cell Division

Chapter-11

Transport in Plants

Chapter-12

Mineral Nutrition

Chapter-14

Respiration in Plants

Chapter-15

Plant Growth and Development

Chapter-16

Digestion and Absorption

Chapter-17

Breathing and Exchange of Gases

Chapter-18

Body Fluids and Circulation

Chapter-19

Excretory Products and their Elimination

Chapter-20

Locomotion and Movement

Chapter-21

Neural Control and Coordination

Chapter-22

Chemical Coordination and Integration

NCERT Solutions for Class 11- Subject wise

NCERT Solutions for Class 11 Biology

NCERT Solutions for Class 11 Maths

NCERT Solutions for Class 11 Chemistry

NCERT Solutions for Class 11 Physics

 

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