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Chapters
Chapter 2: Sexual Reproduction in Flowering Plants
Chapter 3: Human Reproduction
Chapter 4: Reproductive Health
Chapter 5: Principles of Inheritance and Variation
Chapter 6: Molecular Basis of Inheritance
Chapter 7: Evolution
Chapter 8: Human Health and Disease
Chapter 9: Strategies for Enhancement in Food Production
Chapter 10: Microbes in Human Welfare
Chapter 11: Biotechnology : Principles and Processes
Chapter 12: Biotechnology and its Applications
▶ Chapter 13: Organisms and Populations
Chapter 14: Ecosystem
Chapter 15: Biodiversity and Conservation
Chapter 16: Environmental Issues
Solutions for Chapter 13: Organisms and Populations
Below listed, you can find solutions for Chapter 13 of CBSE, Karnataka Board PUC NCERT for Class 12 Biology.
NCERT solutions for Class 12 Biology Chapter 13 Organisms and Populations Exercises [Pages 239 - 240]
How is diapause different from hibernation?
If a marine fish is placed in a fresh water aquarium, will the fish be able to survive? Why or why not?
Define phenotypic adaptation. Give one example.
Most living organisms cannot survive at temperature above 45°C°. How are some microbes able to live in habitats with temperatures exceeding 100°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 the 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 Importance of light to plants
Write a short note on Effect of temperature or water scarcity and the adaptations of animals.
List the various abiotic environmental factors.
Give an example for An endothermic animal
Give an example for An ectothermic animal
Give an example for An organism of benthic zone
Define population and community.
Define the following term and give one example for each:
Commensalism
Define the following term and give one example for each:
Commensalism
Define the following term and give one example:
Parasitism
Define the following term and give one example for each:
Interspecific competition
With the help of suitable diagram describe the logistic population growth curve.
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.
List any three important characteristics of a population and explain
Solutions for Chapter 13: Organisms and Populations
NCERT solutions for Class 12 Biology chapter 13 - Organisms and Populations
Shaalaa.com has the CBSE, Karnataka Board PUC Mathematics Class 12 Biology 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 Class 12 Biology 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 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), Life History Variation, Adaptations and Its Types, Major Abiotic Factors, Population Growth.
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