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NCERT solutions for Class 12 Biology chapter 14 - Ecosystem

Biology Textbook for Class 12


NCERT Biology Class 12

Biology Textbook for Class 12

Chapter 14 - Ecosystem

Pages 256 - 257

Q 1.1 | Page 256

Fill in the blanks.

Plants are called as_________ because they fix carbon dioxide.

Q 1.2 | Page 256

Fill in the blanks.

In an ecosystem dominated by trees, the pyramid (of numbers) is _________ type.

Q 1.3 | Page 256

Fill in the blanks.

 In aquatic ecosystems, the limiting factor for the productivity is _________.

Q 2 | Page 257

Which one of the following has the largest population in a food chain?

(a) Producers

(b) Primary consumers

(c) Secondary consumers

(d) Decomposers

Q 3 | Page 257

The second trophic level in a lake is-

(a) Phytoplankton

(b) Zooplankton

(c) Benthos

(d) Fishes

Q 4 | Page 257

Secondary producers are

(a) Herbivores

(b) Producers

(c) Carnivores

(d) None of the above

Q 5 | Page 257

What is the percentage of photosynthetically active radiation (PAR), in the incident solar radiation.

(a) 100%

(b) 50 %

(c) 1-5%

(d) 2-10%

Q 6.1 | Page 257

Distinguish between Grazing food chain and detritus food chain

Q 6.2 | Page 257

Distinguish between Production and decomposition

Q 6.3 | Page 257

Distinguish between Upright and inverted pyramid

Q 6.4 | Page 257

Distinguish between Food chain and food web

Q 6.5 | Page 257

Distinguish between Litter and detritus

Q 6.6 | Page 257

Distinguish between Primary and secondary productivity

Q 7 | Page 257

Describe the components of an ecosystem.

Q 8 | Page 257

Define ecological pyramids and describe with examples, pyramids of number and biomass.

Q 9 | Page 257

What is primary productivity? Give brief description of factors that affect primary productivity.

Q 10 | Page 257

Define decomposition and describe the processes and products of decomposition.

Q 11 | Page 257

Give an account of energy flow in an ecosystem.

Q 12 | Page 257

Write important features of a sedimentary cycle in an ecosystem.

Q 13 | Page 257

Outline salient features of carbon cycling in an ecosystem

NCERT Biology Class 12

Biology Textbook for Class 12

NCERT solutions for Class 12 Biology chapter 14 - Ecosystem

NCERT solutions for Class 12 Biology chapter 14 (Ecosystem) include all questions with solution and detail explanation from Biology Textbook for Class 12. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. has created the CBSE Biology Textbook for Class 12 solutions in a manner that help students grasp basic concepts better and faster.

Further, we at are providing such solutions so that students can prepare for written exams. These NCERT textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Class 12 Biology chapter 14 Ecosystem are Ecosystems Patterns, Ecosystem – Structure and Function, Productivity, Energy Flow, Ecological Pyramids, Nutrient Cycling, Ecological Succession, Ecosystem Services, Introduction and Types of Ecosystem, Ecosystem (Questions), Decomposition.

Using NCERT solutions for Class 12 Biology by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in NCERT Solutions are important questions that can be asked in the final exam. Maximum students of CBSE Class 12 prefer NCERT Textbook Solutions to score more in exam.

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