This set of Class 12 Biology Chapter 14 Multiple Choice Questions & Answers (MCQs) focuses on “Ecosystem – Carbon Cycle”. 1. What percent of dry weight does carbon constitute in the living organisms? a) 55 percent b) 49 percent c) 20 percent d) 90 percent 2. Which is the most abundant constituent found in living … Read more
This set of Class 12 Biology Chapter 14 Multiple Choice Questions & Answers (MCQs) focuses on “Ecosystem – Nutrient Cycling”. 1. What do organisms require to grow, reproduce and regulate various body functions? a) Air b) Nutrients c) Water d) Soil 2. What is the amount of nutrients present in the soil at any given … Read more
This set of Class 12 Biology Chapter 14 Multiple Choice Questions & Answers (MCQs) focuses on “Ecosystem – Xerarch Succession”. 1. What is a medium water condition called? a) Mesozoic b) Mesic c) Hydric d) Xeric 2. What are conditions having too much dryness called? a) Xeric b) Hydric c) Mesic d) Mesozoic 3. What … Read more
This set of Class 12 Biology Chapter 14 Multiple Choice Questions & Answers (MCQs) focuses on “Ecosystem – Hydrarch Succession”. 1. What is the sequence of successional stages occurring in water called? a) Xerarch succession b) Hydrarch succession c) Ecological succession d) Biological succession 2. Which of the following succession starts with the colonization of … Read more
This set of Class 12 Biology Chapter 14 Multiple Choice Questions & Answers (MCQs) focuses on “Ecological Succession – 2”. 1. Which of the following community develops during the end of the biotic succession? a) Pioneering community b) Climax community c) Primary community d) Secondary community 2. Which of the following is known as the … Read more
This set of Class 12 Biology Chapter 14 Multiple Choice Questions & Answers (MCQs) focuses on “Ecological Succession – 1”. 1. Which of the following is an important characteristic of all communities? a) All individuals grow at the same rate b) Composition and structure constantly changes c) Composition and structure remains constant d) Communities are … Read more
This set of Class 12 Biology Chapter 14 Multiple Choice Questions & Answers (MCQs) focuses on “Ecological Pyramids – 3”. 1. What does the following pyramid represent? a) Upright pyramid of energy b) Inverted pyramid of biomass c) Upright pyramid of number d) Inverted pyramid of energy 2. What does the following pyramid represent? a) … Read more
This set of Class 12 Biology Multiple Choice Questions & Answers (MCQs) focuses on “Ecological Pyramids – 2” for Pharmacy Entrance Exam. 1. Which of the following represents the relationship of prey being more than predators? a) Age structure b) Pyramid of number c) Ecological succession d) Environmental issues 2. On which basis is the … Read more
This set of Class 12 Biology Chapter 14 Multiple Choice Questions & Answers (MCQs) focuses on “Ecological Pyramids – 1”. 1. What is a graphical representation of the relationship (producers forming the base and top carnivores forming the tip) between the individuals present in various trophic levels of a food chain called? a) Ecological succession … Read more
This set of Class 12 Biology Multiple Choice Questions & Answers (MCQs) focuses on “Ecosystem – Energy Flow – 5” for BDS-Dental Entrance Exam. 1. What are the food levels in an ecosystem called? a) Decomposer level b) Trophic levels c) Producer levels d) Consumer levels 2. In general, a food chain consists of how … Read more
