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NCERT solutions for Class 12 Biology chapter 13 - Organisms and Populations

Biology Textbook for Class 12

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Chapters

NCERT Biology Class 12

Biology Textbook for Class 12 - Shaalaa.com

Chapter 13: Organisms and Populations

Chapter 13: Organisms and Populations solutions [Pages 239 - 240]

Q 1 | Page 239

How is diapause different from hibernation?

Q 2 | Page 239

If a marine fish is placed in a fresh water aquarium, will the fish be able to survive? Why or why not?

Q 3 | Page 239

Define phenotypic adaptation. Give one example.

Q 4 | Page 239

Most living organisms cannot survive at temperature above 45°C°. How are some microbes able to live in habitats with temperatures exceeding 100°C?

Q 5 | Page 239

List the attributes that populations but not individuals possess.

Q 6 | Page 239

If a population growing exponentially double in size in 3 years, what is the intrinsic rate of increase (r) of the population?

Q 7 | Page 239

Name important defence mechanisms in plants against herbivory.

Q 8 | Page 240

An orchid plant is growing on the branch of mango tree. How do you describe this interaction between the orchid and the mango tree?

Q 9 | Page 240

What is the ecological principle behind the biological control method of managing with pest insects?

Q 10.1 | Page 240

Distinguish between Hibernation and Aestivation

Q 10.2 | Page 240

Distinguish between Ectotherms and Endotherms

Q 11.2 | Page 240

Write a short note on Adaptations of plants to water scarcity

Q 11.3 | Page 240

Write a short note on Behavioural adaptations in animals

Q 11.4 | Page 240

Write a short note on Importance of light to plants

Q 11.5 | Page 240

Write a short note on Effect of temperature or water scarcity and the adaptations of animals.

Q 12 | Page 240

List the various abiotic environmental factors.

Q 13.1 | Page 240

Give an example for  An endothermic animal

Q 13.2 | Page 240

Give an example for An ectothermic animal 

Q 13.4 | Page 240

Give an example for An organism of benthic zone

Q 14 | Page 240

Define population and community.

Q 15.1 | Page 240

Define the following term and give one example for each:

Commensalism

Q 15.1 | Page 240

Define the following term and give one example for each:

Commensalism

Q 15.2 | Page 240

Define the following term and give one example for each:

Parasitism

Q 15.3 | Page 240

Define the following term and give one example for each:

Camouflage

Q 15.4 | Page 240

Define the following terms and give one example for each

Mutualism

Q 15.5 | Page 240

Define the following term and give one example for each:

Interspecific competition

Q 16 | Page 240

With the help of suitable diagram describe the logistic population growth curve.

Q 17 | Page 240

Select the statement which explains best parasitism.

(a) One organism is benefited.

(b) Both the organisms are benefited.

(c) One organism is benefited, other is not affected.

(d) One organism is benefited, other is affected.

Q 18 | Page 240

List any three important characteristics of a population and explain

Chapter 13: Organisms and Populations

NCERT Biology Class 12

Biology Textbook for Class 12 - Shaalaa.com

NCERT solutions for Class 12 Biology chapter 13 - Organisms and Populations

NCERT solutions for Class 12 Biology chapter 13 (Organisms and Populations) include all questions with solution and detail explanation. 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. Shaalaa.com has the CBSE Biology Textbook for Class 12 solutions in a manner that help students grasp basic concepts better and faster.

Further, we at Shaalaa.com provide such solutions so that students can prepare for written exams. 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 13 Organisms and Populations are Introduction of Organisms and Environment, Population and Ecological Adaptations, Population Interactions, Population Attributes, Responses to Abiotic Factors, Introduction of Organisms and Populations, Ecology (Organism, Population, Community and Biome), Organisms and Populations (Questions), Adaptations, Life History Variation, Major Abiotic Factors, Population Growth.

Using NCERT Class 12 solutions Organisms and Populations exercise 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.

Get the free view of chapter 13 Organisms and Populations Class 12 extra questions for Biology and can use Shaalaa.com to keep it handy for your exam preparation

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