NCERT Grade 12 Biology Chapter 13, Organisms and Populations is from the Unit, Ecology. Ecology is basically concerned with four levels of biological organisation – organisms, populations, communities and biomes. In this chapter, students shall explore ecology at organismic and population levels. This chapter deals with topics such as organisms and its environment, niche, major abiotic factors affecting the organisms and its environment such as temperature, water, light, soil, responses to abiotic factors such as regulation, conformation, migration and suspension; adaptations, population attributes, population growth, natality, mortality, immigration, emigration; growth models of exponential growth and logistic growth, phenomena of population interactions such as mutualism, competition, parasitism, predation, commensalism and amensalism. Detailed description of these topics helps the students to understand the chapter in-depth.
Diagrams, illustrations, figures, graphical representation and lucid language make this chapter comprehensive and easy to learn. Sequential progress of topics helps to grasp and retain better.Technical terms associated to Organisms and Populations; and summarizing points are some aspects of NCERT Grade 12 Biology Chapter 13, Organisms and Populations that make it interesting and fun to learn. NCERT Grade 12 Biology Chapter 13, Organisms and Populations is from the Unit, Ecology. A combination of 4 chapters, this unit holds a total weightage of 14 marks in Grade 12 final examination.
Get 100 percent accurate NCERT Solutions for Class 12 Biology Chapter 13 (Organisms and Populations) solved by expert Biology teachers. We provide solutions for questions given in Class 12 Biology text-book as per CBSE Board guidelines from the latest NCERT book for Class 12 Biology. The topics and sub-topics in Chapter 13 Organisms and Populations are given below.
Ex 13.1 - Organism and Its Environment
Ex 13.1.1 - Major Abiotic Factors
Ex 13.1.2 - Responses to Abiotic Factors
Ex 13.1.3 - Adaptations
Ex 13.2 - Populations
Ex 13.2.1 - Population Attributes
Ex 13.2.2 - Population Growth
Ex 13.2.3 - Life History Variation
Ex 13.2.4 - Population Interactions.
We cover all exercises in the chapter given below:-
Chapter 13 Exercises - 18 Questions with Solutions.
Other than given exercises, you should also practice all the solved examples given in the book to clear your concepts on Organisms and Populations. Download the free PDF of Chapter 13 Organisms and Populations and take the print out to keep it handy for your exam preparation.