All Courses
Explore Courses UPSC Exam UPSC Test Series Free Notes EduRev Infinity Get the App Login Join for Free
Sign in Open App
Class 10 Exam  >  Class 10 Questions  >   Directions: In the following questions, a st... Start Learning for Free
SaveJoin the Discussion on the App
Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion: Greater number of individuals are present in lower trophic levels.
Reason: The flow of energy is unidirectional.
  • a)
    Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
  • b)
    Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).
  • c)
    Assertion (A) is true but reason (R) is false.
  • d)
    Assertion (A) is false but reason (R) is true.
Correct answer is option 'B'. Can you explain this answer?
FREE This question is part of
Download PDF Attempt Test
Download PDF Attempt this Test
Verified Answer
Directions: In the following questions, a statement of assertion (A) ...
Producer is the first trophic level of the terrestrial food chains. Generally organisms at the lowest trophic level are always greater in number. As we move to the higher trophic levels, the number and the complexity of organisms increase. This helps to maintain the balance in the ecosystem. If there would have less producers compared to primary consumers; they would have starved and the further food chains could have been disturbed.
Also the amount of energy transferred from one tropic level to the other is less (10%), hence is it important that a larger population exist for a lower trophic level than that found above it.
View all questions of this test
Most Upvoted Answer
Directions: In the following questions, a statement of assertion (A) ...
Assertion: Greater number of individuals are present in lower trophic levels.
Reason: The flow of energy is unidirectional.

The correct answer is option 'B': Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

Explanation:
Assertion: Greater number of individuals are present in lower trophic levels.
Reason: The flow of energy is unidirectional.

Explanation:
- Trophic levels represent the different levels in a food chain or food web, where organisms are categorized based on their feeding relationships.
- The assertion states that a greater number of individuals are present in lower trophic levels. This means that there are more organisms at the base of the food chain or web, which are the producers or primary consumers.
- The reason given for this assertion is that the flow of energy is unidirectional. This means that energy flows from lower trophic levels to higher trophic levels in a food chain or web.
- However, the reason does not provide a direct explanation for the greater number of individuals in lower trophic levels. The reason only explains the flow of energy, not the population dynamics or distribution of individuals in different trophic levels.
- The greater number of individuals in lower trophic levels can be explained by the concept of energy transfer and loss. As energy flows from one trophic level to another, there is a decrease in the amount of available energy. This limits the number of individuals that can be supported at higher trophic levels.
- Additionally, the base of the food chain or web consists of producers (plants or algae) that can convert sunlight into energy through photosynthesis. This provides a large energy source for the organisms in the lower trophic levels, allowing for a greater number of individuals.
- Therefore, while both the assertion and reason are true, the reason does not provide the correct explanation for the greater number of individuals in lower trophic levels.
Attention Class 10 Students!
To make sure you are not studying endlessly, EduRev has designed Class 10 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 10.
< Previous Question Next Question >
Explore Courses for Class 10 exam

Similar Class 10 Doubts

Read the following and answer the questions:Food chains are very important for the survival of most species. When only one element is removed from the food chain it can result in extinction of a species in some cases. The foundation of the food chain consists of primary producers.Primary producers, or autotrophs, can use either solar energy or chemical energy to create complex organic compounds, whereas species at higher trophic levels cannot and so must consume producers or other life that itself consumes producers. Because the sun's light is necessary for photosynthesis, most life could not exist if the sun disappeared. Even so, it has recently been discovered that there are some forms of life, chemotrophs, that appear to gain all their metabolic energy from chemosynthesis driven by hydrothermal vents, thus showing that some life may not require solar energy to thrive.Q. Matter and energy are two fundamental inputs of an ecosystem. Movement of

Top Courses for Class 10View all

Top Courses for Class 10

Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion: Greater number of individuals are present in lower trophic levels.Reason: The flow of energy is unidirectional.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'B'. Can you explain this answer?
Question Description
Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion: Greater number of individuals are present in lower trophic levels.Reason: The flow of energy is unidirectional.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'B'. Can you explain this answer? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion: Greater number of individuals are present in lower trophic levels.Reason: The flow of energy is unidirectional.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion: Greater number of individuals are present in lower trophic levels.Reason: The flow of energy is unidirectional.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'B'. Can you explain this answer?.
Solutions for Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion: Greater number of individuals are present in lower trophic levels.Reason: The flow of energy is unidirectional.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 10. Download more important topics, notes, lectures and mock test series for Class 10 Exam by signing up for free.
Here you can find the meaning of Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion: Greater number of individuals are present in lower trophic levels.Reason: The flow of energy is unidirectional.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion: Greater number of individuals are present in lower trophic levels.Reason: The flow of energy is unidirectional.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'B'. Can you explain this answer?, a detailed solution for Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion: Greater number of individuals are present in lower trophic levels.Reason: The flow of energy is unidirectional.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion: Greater number of individuals are present in lower trophic levels.Reason: The flow of energy is unidirectional.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion: Greater number of individuals are present in lower trophic levels.Reason: The flow of energy is unidirectional.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice Class 10 tests.
Explore Courses for Class 10 exam

Top Courses for Class 10

Explore Courses

Suggested Free Tests

Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev
Get App
© EduRev
Education Revolution
Signup to see your scores go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup