What are trophic levels class 10

Trophic levels: • These are the levels at which the organisms obtain their food. • Each of the trophic levels has a specific mode of obtaining food. • The first trophic level includes producers that produce food from inorganic raw materials with the help of solar energy. • The second trophic level consists of herbivores that feed on plants. • The third trophic level includes primary carnivores that feed on herbivores. • The fourth trophic level comprises secondary carnivores that feed on primary carnivores. • The fifth trophic level comprises tertiary carnivores that feed on secondary carnivores. • The sixth trophic level includes decomposers. Terrestrial food chain: • A chain that consists of a group of organisms where there is a transfer of food energy through a series of repeated eating and being eaten is called a food chain. • In terrestrial ecosystems, the carnivorous level does not go beyond the fifth trophic level and this level is called top carnivores. • The terrestrial ecosystem is divided into: • Producers • In terrestrial food, chain producers constitute the first trophic level. • They trap solar energy, which is used to obtain carbon dioxide, which is then used to synthesize carbohydrates, fats, and proteins. • Examples are green plants. • Herbivores • They are animals that feed on plants or plant products. • Examples include grasshoppers, insects, and tadpoles. • Primary carnivores • They prey upon herbivorous animals. • Examples are frogs, predatory insects,...

Here you get the CBSE Class 10 Science chapter 15, Our Environment: NCERT Exemplar Problems and Solutions (Part-I). This part of the chapter includes solutions for Question No. 1 to 15 from the NCERT Exemplar Problems for Class 10 Science Chapter: Our Environment. These questions include only the Multiple Choice Questions (MCQs) framed from various important topics in the chapter. Each question is provided with a detailed explanation. CBSE Class 10 Science Syllabus 2017-2018 NCERT Exemplar problems are a very good resource for preparing the critical questions like Higher Order Thinking Skill (HOTS) questions. All these questions are very important to prepare for CBSE Class 10 Science Board Examination 2017-2018 as well as other competitive exams. Find below the NCERT Exemplar problems and their solutions for Class 10 Science Chapter, Our Environment: Multiple Choice Questions Question 1. Which one of the following is an artificial ecosystem? (a) Pond (b) Crop field (c) Lake (d) Forest Answer. (b) Explanation: Crop field is an agricultural land created by human. Question 2. In a food chain, the third trophic level is always occupied by (a) carnivores (b) herbivores (c) decomposers (d) producers Answer. (a) Explanation: Plants occupy the first trophic level, herbivores constitute the second trophic level, carnivores constitute the third trophic level and higher carnivores occupy the fourth trophic level. NCERT Solutions for CBSE Class 10 Science Question 3. An ecosystem incl...

Term Meaning Autotroph (producer) An organism that produces its own food using sunlight or chemical energy Heterotroph (consumer) An organism that consumes another organism for food Food chain A series of organisms in which energy is transferred to another Food web A network of feeding interactions, usually consisting of multiple food chains Trophic level Each step in a food chain or food web Biomass The total amount of living tissue within a trophic level Each of the categories above is called a trophic level, and it reflects how many consumption steps separate an organism from the food chain's original energy source, such as light. However, in most ecosystems, energy flow is much more complicated than a linear chain. In this case, a food web can be used to represent these feeding interactions between trophic levels. An organism may not always occupy the same trophic level, depending on the food web. Assigning organisms to trophic levels isn't always clear-cut. For instance, humans are omnivores, meaning they can eat both plants and animals. So they may be considered both primary and secondary (or even higher!) consumers. • You would find 10% of the mass at the next trophic level up. For example, 10% of a primary producer's biomass is transferred to the primary consumer, and 10% of that primary consumer's biomass is transferred to the secondary consumer and so on. That means that the secondary consumer contains 1% of the initial primary producer's biomass.

Contents • 1 Class 10 Science Chapter 15 Important Questions with Answers Our Environment • 1.1 Our Environment Class 10 Important Questions Very Short Answer Type • 1.2 Our Environment Class 10 Important Questions Short Answer Type I • 1.3 Our Environment Class 10 Important Questions Short Answer Type II • 1.4 Our Environment Class 10 Important Questions Long Answer Type Solved the very best collection of Our Environment Class 10 Science Chapter 15 Important Questions with Answers Our Environment Class 10 Chemistry Chapter 15 Important Questions with Answers Our Environment Our Environment Class 10 Important Questions Very Short Answer Type Question 1. What will happen if we kill all the organisms in one trophic level? (2011 D) Answer: It will disturb the food chains and food web, which in turn will decrease the chances of food availability to the succeeding trophic levels and will result in instability of the ecosystem. Question 2. Which compounds are responsible for the depletion of ozone layer? (2011 D) Answer: Chlorofluorocarbons (CFCs) are the chemicals which are responsible for the depletion of ozone. Question 3. Define, ‘trophic level’. (2011 D) The various steps in a food chain at which the transfer of food (or energy) takes place are called trophic levels. In a food chain, each step representing an organism forms a trophic level. Question 4. What are the various steps in a food chain called? (2011 D) Answer: The various steps of a food chain are called trophic le...

Which of the following statements about food chain are correct? (i) It includes repeated eating i.e., each group eats the other and is subsequently eaten by some other group of organisms. (ii) It shows a series of branching lines and unidirectional flow of energy. (iii) It shows the unidirectional flow of energy and proceeds in a progressive straight line. (iv) It may consists of more than ten trophic levels depending upon the type of ecosystem.

Lakhmir Singh Solutions for Class 10 Biology Chapter 5 Our Environment are provided here in PDF for students to access easily. Chapter 5, Our Environment, explains the different types of components present in our environment. This lesson provides detailed descriptions of the ecosystem, food chain, food web and energy transformation from one organism to another. Besides, in this chapter, students will learn about the different hazards happening in the environment. The environmental hazards include different kinds of pollution, global warming, and about species getting extinct from the planet. The further consequences of this pollution, how to control these hazards and how to prevent them etc., are also explained in this chapter. In general, it gives us an idea of how today’s young generation is exploiting the environment and how to deal with it. Download PDF carouselExampleControls111 Previous Next Access Lakhmir Singh Solutions for Class 10 Biology Chapter 5 Very Short Answer Type Questions 1. What is the functional unit of the environment comprising of the living and non-living components called? Answer The ecosystem is the functional unit of the environment consisting of living and non-living components. 2. Name two natural ecosystems and two artificial ecosystems. Answers Two natural ecosystems are the pond ecosystem and the forest ecosystem. Two artificial ecosystems are the crop field ecosystem and the aquarium ecosystem. 3. Which one of the following is not a terrest...

In this activity, students model trophic cascades using cards of organisms from seven different habitats. The activity is designed to illustrate the species relationships in a food chain and the effect of predators on the trophic levels below. Trophic cascades have been described in numerous ecosystems, ranging from kelp forests of the Pacific Ocean, to arctic islands, to Central American jungles, to salt marshes. They occur when predators reduce the abundance or change the activity of their prey, thereby allowing species in the trophic level below to increase in number. These indirect effects by the predator can trickle down (or cascade) to many lower levels of the food chain. In a classic example, sea otters protect kelp forests by controlling the abundance of urchins that graze upon the kelp. In the absence of otters, urchins consume most of the kelp and negatively affect other organisms that live in kelp forests. This activity complements the concepts explored in other BioInteractive resources, including the Exploring Trophic Cascades Click & Learn and the short film So me Animals Are More Equal than Others: Keystone Species and Trophic Cascades. The “Card Images” ZIP file contains individual image files for the cards used in this activity that can be used in the classroom, particularly in online courses. A document within the ZIP file contains suggestions for their use. These card images are licensed under a

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• NCERT Solutions • NCERT Library • RD Sharma • RD Sharma Class 12 Solutions • RD Sharma Class 11 Solutions Free PDF Download • RD Sharma Class 10 Solutions • RD Sharma Class 9 Solutions • RD Sharma Class 8 Solutions • RD Sharma Class 7 Solutions • RD Sharma Class 6 Solutions • Class 12 • Class 12 Science • NCERT Solutions for Class 12 Maths • NCERT Solutions for Class 12 Physics • NCERT Solutions for Class 12 Chemistry • NCERT Solutions for Class 12 Biology • NCERT Solutions for Class 12 Economics • NCERT Solutions for Class 12 Computer Science (Python) • NCERT Solutions for Class 12 Computer Science (C++) • NCERT Solutions for Class 12 English • NCERT Solutions for Class 12 Hindi • Class 12 Commerce • NCERT Solutions for Class 12 Maths • NCERT Solutions for Class 12 Business Studies • NCERT Solutions for Class 12 Accountancy • NCERT Solutions for Class 12 Micro Economics • NCERT Solutions for Class 12 Macro Economics • NCERT Solutions for Class 12 Entrepreneurship • Class 12 Humanities • NCERT Solutions for Class 12 History • NCERT Solutions for Class 12 Political Science • NCERT Solutions for Class 12 Economics • NCERT Solutions for Class 12 Sociology • NCERT Solutions for Class 12 Psychology • Class 11 • Class 11 Science • NCERT Solutions for Class 11 Maths • NCERT Solutions for Class 11 Physics • NCERT Solutions for Class 11 Chemistry • NCERT Solutions for Class 11 Biology • NCERT Solutions for Class 11 Economics • NCERT Solutions for Class 11 Computer Science (Python...

Contents • 1 Class 10 Science Chapter 15 Important Questions with Answers Our Environment • 1.1 Our Environment Class 10 Important Questions Very Short Answer Type • 1.2 Our Environment Class 10 Important Questions Short Answer Type I • 1.3 Our Environment Class 10 Important Questions Short Answer Type II • 1.4 Our Environment Class 10 Important Questions Long Answer Type Solved the very best collection of Our Environment Class 10 Science Chapter 15 Important Questions with Answers Our Environment Class 10 Chemistry Chapter 15 Important Questions with Answers Our Environment Our Environment Class 10 Important Questions Very Short Answer Type Question 1. What will happen if we kill all the organisms in one trophic level? (2011 D) Answer: It will disturb the food chains and food web, which in turn will decrease the chances of food availability to the succeeding trophic levels and will result in instability of the ecosystem. Question 2. Which compounds are responsible for the depletion of ozone layer? (2011 D) Answer: Chlorofluorocarbons (CFCs) are the chemicals which are responsible for the depletion of ozone. Question 3. Define, ‘trophic level’. (2011 D) The various steps in a food chain at which the transfer of food (or energy) takes place are called trophic levels. In a food chain, each step representing an organism forms a trophic level. Question 4. What are the various steps in a food chain called? (2011 D) Answer: The various steps of a food chain are called trophic le...