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Chapters
2: Sexual Reproduction in Flowering Plants
3: Human Reproduction
4: Reproductive Health
5: Principles of Inheritance and Variation
6: Molecular Basis of Inheritance
7: Evolution
8: Human Health and Disease
9: Strategies for Enhancement in Food Production
10: Microbes in Human Welfare
11: Biotechnology : Principles and Processes
12: Biotechnology and its Applications
▶ 13: Organisms and Populations
14: Ecosystem
15: Biodiversity and Conservation
16: Environmental Issues
![NCERT solutions for Biology [English] Class 12 chapter 13 - Organisms and Populations - Shaalaa.com](/images/biology-english-class-12_6:7651503646404bfa983e02ffc9144f8b.jpg "NCERT solutions for Biology [English] Class 12 chapter 13 - Organisms and Populations")
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Solutions for Chapter 13: Organisms and Populations
Below listed, you can find solutions for Chapter 13 of CBSE, Karnataka Board PUC NCERT for Biology [English] Class 12.
NCERT solutions for Biology [English] Class 12 13 Organisms and Populations Exercises [Pages 239 - 240]
How is diapause different from hibernation?
If a marine fish is placed in a freshwater aquarium, will the fish be able to survive? Why or why not?
Define phenotypic adaptation.
Most living organisms cannot survive at temperatures above 45°C.
List the attributes that populations but not individuals possess.
If a population growing exponentially double in size in 3 years, what is the intrinsic rate of increase (r) of the population?
Name important defence mechanisms in plants against herbivory.
An orchid plant is growing on the branch of a mango tree. How do you describe this interaction between the orchid and the mango tree?
What is the ecological principle behind the biological control method of managing with pest insects?
Distinguish between Hibernation and Aestivation
Distinguish between Ectotherms and Endotherms
Write a short note on adaptations of plants to water scarcity.
Write a short note on behavioural adaptations in animals.
Write a short note on the importance of light to plants.
Write a short note on the effect of temperature.
Write a short note on the effect of water scarcity.
Write a short note on adaptations of animals.
List the various abiotic environmental factors.
Give an example of an endothermic animal.
Give an example of an ectothermic animal.
Give an example of an organism of benthic zone.
Define population.
Define the following term:
Commensalism
Give one example of commensalism.
Give any ‘two’ types with suitable example of Parasitism.
Define the following term:
Interspecific competition
With the help of a suitable diagram, describe the logistic population growth curve.
Select the statement which explains best parasitism.
One organism is benefited.
Both the organisms are benefited.
One organism is benefited, other is not affected.
One organism is benefited, other is affected.
List any three important characteristics of a population and explain.
Solutions for 13: Organisms and Populations
NCERT solutions for Biology [English] Class 12 chapter 13 - Organisms and Populations
Shaalaa.com has the CBSE, Karnataka Board PUC Mathematics Biology [English] Class 12 CBSE, Karnataka Board PUC solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. NCERT solutions for Mathematics Biology [English] Class 12 CBSE, Karnataka Board PUC 13 (Organisms and Populations) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.
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Concepts covered in Biology [English] Class 12 chapter 13 Organisms and Populations are Population Attributes, Population Interactions, Life History Variation, Overview of Organisms and Populations, Organisms and Their Environment, Ecology, Population Growth, Negative Interactions > Predation, Negative Interactions > Competition, Negative Interactions > Parasitism, Positive Interactions > Commensalism, Positive Interactions > Mutualism (Symbiosis), Patterns of Biodiversity, Loss of Biodiversity, Conservation of Biodiversity, Biodiversity, Species on Earth and Species in India, Importance of Species Diversity to the Ecosystem, Overview of Biodiversity and Its Conservation, Biodiversity Conservation Methods.
Using NCERT Biology [English] Class 12 solutions Organisms and Populations exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in NCERT Solutions are essential questions that can be asked in the final exam. Maximum CBSE, Karnataka Board PUC Biology [English] Class 12 students prefer NCERT Textbook Solutions to score more in exams.
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