Class 11 Biology NCERT Solutions for Chapter 14 Respiration In Plants

NCERT Solutions for Class 11 Biology Chapter 14 Respiration In Plants: Are you thinking about the methods in which you can try to score good marks in the part i.e., NCERT Solutions For Class 11 Biology Chapter 14 – Respiration In Plants? Yes. A student comes across different kinds of suggestions while getting ready for the final Biology exam and in this process he often gets confused about choosing the right path. Don’t worry. We have got you covered.

• NCERT Solutions For 11th Biology All Chapters

In this blog, you will get new directions while focusing on an important chapter from Class 11 NCERT Biology Solutions and it is none other than Respiration in Plants. We have dealt with the important aspects of NCERT Bio Chapter 14 Solutions like the benefits of following the solutions along with a topic-wise explanation. You will also observe the overview of the chapter while examining the basic concepts of Chapter 14 Solutions.

NCERT Solutions For Class 11 Biology Chapter 14 Respiration In Plants

In NCERT Chapter 14 Bio you will know about the ways energy is released while exploring the cellular respiration or the mechanism of breakdown food material which happens in a plant cell. You will be able to clear all the doubts or confusion by checking the solved answers which have been provided by the experts.

The experts have tried to fulfill their requirements in the Solutions Chapter 14 in form of examples, diagrammatic representations, and so on. You can focus on the contents of the solutions after you finish reading the chapter. Your confidence will reach a new level once you concentrate on the various parts of the solutions.

You can download CBSE NCERT Solutions for Class 11 Biology  Chapter 14 from below.

Download NCERT Class 11 Biology Chapter 14 Solutions

What will you learn in NCERT Class 11 Biology Chapter 14?

By going through all kinds of explanations you will gain knowledge about the energy and the way it falls into a trap incase of synthesis of ATP, This chapter is a part of Unit 4 Plant Physiology and here you will get all in depth analyzis in relation to following parts like Do Plants Breathe Glycolysis. Fermentation, Aerobic Respiration The Respiratory Balance Sheet, Amphibolic Pathway and Respiratory Quotient in plants. Tricarboxylic Acid Cycle and Electron Transport System (ETS) and Oxidative Phosphorylation.

We will now present you the topics/subtopics which fall under the 14^th chapter of NCERT solutions.

NCERT Solutions For Class 11 Science Biology Chapter 14 Topic-Wise Listing

You will come across the solutions from the following topics/sub topics in the NCERT solutions-

Here are the topics/ subtopics of the chapter:

14.1	Do Plants Breathe?
14.2	Glycolysis
14.3	Fermentation
14.4	Aerobic Respiration
14.5	The Respiratory Balance Sheet
14.6	Amphibolic Pathway
14.7	Respiratory Quotient

Advantages of following NCERT Solutions For Class 11 Biology Chapter 14 Respiration In Plants

There are different kinds of benefits for referring to the Chapter 14 Bio Class 11 NCERT Solutions and now we will talk about those solutions. You must collect it after you finish your syllabus.

• The students will be able to prepare themselves in a better way when they go through the contents of the Chapter 14 solutions.
• The students will be able to cross all the hurdles in connection with the various processes of respiration without any kind of fear.
• All the topics in connection with the concept of respiratory movements have been explained with proper illustrations and if you examine the contents carefully you will be left with zero queries.
• You will get new ideas to improve your methods of preparation and that is the beauty of following solutions Chapter 14.
• Shaping study materials becomes easier for you when you are ready with solutions.
• You get to new inputs to prepare for your competitive exams.

ABBREVIATIONS On Respiration In Plants

• ATP: Adenosine tri phosphate
• ADP: Adenosine di phosphate
• NAD: Nicotinamide Adenine dinucleotide
• NADP: Nicotinamide Adenine dinucleotide Phosphate
• NADH: Reduced Nicotinamide Adenine dinucleotide
• PGA: Phosphoglyceric acid
• PGAL: Phospho glyceraldehyde
• FAD: Flavin adenine dinucleotide
• ETS: Electron transport system
• ETC: Electron transport chain
• TCA: Tricarboxylic acid (Cycle)
• OAA: Oxalo acetic acid
• FMN: Flavin mono nucleotide
• PPP: Pentose phosphate pathway

Important Notes On Respiration In Plants

• Aerobic respiration: Complete oxidation of organic food in presence of oxygen thereby producing CO2, water and energy.
• Anaerobic respiration: Incomplete breakdown of organic food to liberate energy in the absence of oxygen.
• ATP Synthetize: An enzyme complex that catalysis synthesis of ATP during oxidative phospho-relation.
• Fermentation: Breakdown of organic substance that takes place in certain microbe like yeast under anaerobic condition with the production of CO2 and ethanol.
• Glycolysis: Enzymatic breakdown of glucose into pyruvic acid that occurs in the cytoplasm.
• Oxidative phosphorylation: Process of formation of ATP from ADP and Pi using the energy from proton gradient.

Access NCERT Solutions For Class 11 Biology Chapter 14

1. Differentiate between

(a) Respiration and Combustion

(b) Glycolysis and Krebs’ cycle

(c) Aerobic respiration and Fermentation

a)Respiration and Combustion

b) Glycolysis and Krebs’ cycle

c) Aerobic respiration and Fermentation

2. What are respiratory substrates? Name the most common respiratory substrate.

Organic substrates that are oxidized during respiration to liberate energy inside the living cells are respiratory substrates. Carbohydrates, proteins, fats and organic acids are the most common respiratory substrate.

3. Give the schematic representation of glycolysis?

Schematic representation of glycolysis is as follows:

4. What are the main steps in aerobic respiration? Where does it take place?

Main steps in aerobic respiration are as follows

• Glycolysis: Occurs in the cytoplasm(cytosol) where glucose is broken down to pyruvic acid.
• Oxidative decarboxylation of pyruvic acid to acetyl coenzyme-A: Takes place inside the mitochondrial matrix.
• TCA or Krebs cycle takes place in Mitochondrial matrix where pyruvic acid is oxidized to transform the energy contained in these molecules into ATP.
• Electron transport chain occurs in mitochondrial membrane involves ATP synthase complex.

5. Give the schematic representation of an overall view of Krebs’ cycle.

The schematic representation of an overall view of Krebs’ cycle is as follows:

6. Explain ETS.

• Electron transport system(ETS) is found in the inner mitochondrial membrane and aids in liberating and using the energy stored in the NADH+H⁺ and FADH₂
• NADH+ H⁺ , formed while citric acid cycle and glycolysis occurs is oxidized by NADH dehydrogenase or complex I
• Electrons hence produced are conveyed to ubiquinone via FMN
• Similarly, the complex II or FADH₂ synthesized during the citric acid cycle is conveyed to ubiquinone
• From ubiquinone electrons are accepted by the complex III or cytochrome bc₁ which furthermore gets conveyed to cytochrome c which serves as a mobile carrier between the cytochrome c oxidase complex and complex III comprising of cytochrome a and a₃ with copper centers (complex IV) additionally
• When electrons are transferred from each complex, simultaneously other processes occur such as production of the ATP from ADP and the inorganic phosphate through the action of ATP synthase(complex V)
• This amount of ATP production is dependent on the molecule that has been oxidized. 3 ATP molecules are generated by the oxidation of 1 molecule of NADH while 1 FADH₂ molecule upon oxidation produces 2 ATP molecules

7. Distinguish between the following:

(a) Aerobic respiration and Anaerobic respiration

(b) Glycolysis and Fermentation

(c) Glycolysis and Citric acid Cycle

a) Aerobic respiration and Anaerobic respiration

b) Glycolysis and Fermentation

c) Glycolysis and Citric acid Cycle

8. What are the assumptions made during the calculation of net gain of ATP?

Assumptions made during the calculation of net gain of ATP are as follows

• NADH generated inside the mitochondria synthesizes 3 ATP molecules during its oxidation.
• NADH formed during glycolysis sends its reducing power into mitochondria via the shuttle system.
• During oxidation of FADH₂, 2 molecules of ATP is produced inside mitochondria
• Formation of 3 ATP in the malate-aspartate shuttle (heart, liver and kidney) and 2 ATP in the glycerol phosphate shuttle (muscles and nerve cells).

9. Discuss “The respiratory pathway is an amphibolic pathway.”

Organic substances such as fats, carbohydrates, proteins etc liberate energy when they are disintegrated in the respiratory pathway. This phenomena is said to be catabolic in nature. The respiratory process that serves as a catabolic pathway for the respiratory substrates also serves as an anabolic pathway to produce different metabolic products and secondary metabolites. Thus, the respiratory pathway serves as a catabolic and anabolic pathway. Therefore, the respiratory pathway is an amphibolic pathway.

10. Define RQ. What is its value for fats?

The ratio of volume of CO₂ evolved to the volume of Oxygen consumed in respiration is called respiratory quotient (RQ) or respiratory ratio.

RQ is less than 1 when the respiratory substrate is either fat or protein

11. What is oxidative phosphorylation?

Oxidative phosphorylation is the conversion of ADP into ATP by electron transport system. Phosphorylation takes place in the inner mitochondrial membrane via the ATP synthetase complex when the hydrogen protons pass through it. The energy essential for phosphorylation is derived from the oxidation-reduction phenomena in respiration. Thus the process is known as oxidative phosphorylation.

12. What is the significance of step-wise release of energy in respiration?

During respiration single molecule of glucose is disintegrated to generate carbon dioxide and water along with the formation of ATP molecules. If the energy gets released at one go, then most of energy will be lost as heat. In order to synthesize new compounds, the cell should be able to utilize the energy. Hence step-wise release of energy in respiration is most efficient in the conservation of energy.

We have covered the complete guide on CBSE NCERT Solutions for Class 11 Biology Chapter 14 Respiration In Plants. Feel free to ask us any questions in the comment section below.

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