UPSC Exam > UPSC Questions > Which of the following statements regarding t...
Start Learning for Free
Which of the following statements regarding the photic zone of an aquatic ecosystem is/are correct?
- It is the lowest layer of the aquatic ecosystem, where light penetration is restricted.
- Both photosynthesis and respiration activities take place in this region.
Select the correct answer using the code given below:
- a)1 only
- b)2 only
- c)Both 1 and 2
- d)Neither 1 nor 2
Correct answer is option 'B'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
Which of the following statements regarding the photic zone of an aqua...
Based on light penetration and plant distribution, aquatic ecosystems are classified as photic and aphotic zones
Photic zone: Photic zone (euphotic zone, epipelagic zone) is the uppermost layer of the ocean that receives sunlight, enabling it to perform photosynthesis. It undergoes a series of physical, chemical, and biological processes that supply nutrients into the upper water column. So, statement 1 is not correct.
The photic zone is home to the majority of marine life, due to its location. Ninety per cent of marine life lives in the photic zone, which is approximately two hundred meters deep. This includes phytoplankton (plants), including dinoflagellates, diatoms, cyanobacteria, and zooplankton, which are known as the consumers in the photic zone. Both photosynthesis and respiration activities take place in this zone. So, statement 2 is correct.
Aphotic zone is the portion of a lake or ocean where there is little or no sunlight. It is formally defined as the depths beyond which less than 1% of sunlight penetrates. The aphotic zone is positioned below the littoral and photic zones to the bottom of the lake, where light levels are too low for photosynthesis. Respiration occurs at all depths, so the aphotic zone is a region of oxygen consumption. Only respiration activities take place this
deep, the unlit region is also known as the profundal zone.
Therefore, the correct answer is (b).
Free Test
FREE
| Start Free Test |
Community Answer
Which of the following statements regarding the photic zone of an aqua...
Explanation:
The photic zone is the uppermost layer of an aquatic ecosystem, where light penetration is sufficient to support photosynthesis. This zone is characterized by the presence of sunlight and is the primary location for photosynthetic activity in the ecosystem.
Statement 1: It is the lowest layer of the aquatic ecosystem, where light penetration is restricted.
This statement is incorrect. The photic zone is actually the uppermost layer of the aquatic ecosystem, where light can penetrate. It is the region where photosynthesis takes place and is characterized by high levels of light availability.
Statement 2: Both photosynthesis and respiration activities take place in this region.
This statement is correct. The photic zone is the region where photosynthesis occurs, as it provides the necessary sunlight for the process. Photosynthesis is the process by which plants and other organisms convert light energy into chemical energy, producing oxygen and organic compounds. Additionally, respiration also takes place in the photic zone. Respiration is the process by which organisms use oxygen to convert organic compounds into energy, releasing carbon dioxide as a byproduct.
Therefore, the correct answer is option 'B' - 2 only.
The photic zone is the uppermost layer of an aquatic ecosystem, where light penetration is sufficient to support photosynthesis. This zone is characterized by the presence of sunlight and is the primary location for photosynthetic activity in the ecosystem.
Statement 1: It is the lowest layer of the aquatic ecosystem, where light penetration is restricted.
This statement is incorrect. The photic zone is actually the uppermost layer of the aquatic ecosystem, where light can penetrate. It is the region where photosynthesis takes place and is characterized by high levels of light availability.
Statement 2: Both photosynthesis and respiration activities take place in this region.
This statement is correct. The photic zone is the region where photosynthesis occurs, as it provides the necessary sunlight for the process. Photosynthesis is the process by which plants and other organisms convert light energy into chemical energy, producing oxygen and organic compounds. Additionally, respiration also takes place in the photic zone. Respiration is the process by which organisms use oxygen to convert organic compounds into energy, releasing carbon dioxide as a byproduct.
Therefore, the correct answer is option 'B' - 2 only.
Attention UPSC Students!
To make sure you are not studying endlessly, EduRev has designed UPSC study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in UPSC.
|
Explore Courses for UPSC exam
|
|
Similar UPSC Doubts
Top Courses for UPSCView all
Which of the following statements regarding the photic zone of an aquatic ecosystem is/are correct? It is the lowest layer of the aquatic ecosystem, where light penetration is restricted. Both photosynthesis and respiration activities take place in this region.Select the correct answer using the code given below:a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'B'. Can you explain this answer?
Question Description
Which of the following statements regarding the photic zone of an aquatic ecosystem is/are correct? It is the lowest layer of the aquatic ecosystem, where light penetration is restricted. Both photosynthesis and respiration activities take place in this region.Select the correct answer using the code given below:a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'B'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Which of the following statements regarding the photic zone of an aquatic ecosystem is/are correct? It is the lowest layer of the aquatic ecosystem, where light penetration is restricted. Both photosynthesis and respiration activities take place in this region.Select the correct answer using the code given below:a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements regarding the photic zone of an aquatic ecosystem is/are correct? It is the lowest layer of the aquatic ecosystem, where light penetration is restricted. Both photosynthesis and respiration activities take place in this region.Select the correct answer using the code given below:a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'B'. Can you explain this answer?.
Which of the following statements regarding the photic zone of an aquatic ecosystem is/are correct? It is the lowest layer of the aquatic ecosystem, where light penetration is restricted. Both photosynthesis and respiration activities take place in this region.Select the correct answer using the code given below:a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'B'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Which of the following statements regarding the photic zone of an aquatic ecosystem is/are correct? It is the lowest layer of the aquatic ecosystem, where light penetration is restricted. Both photosynthesis and respiration activities take place in this region.Select the correct answer using the code given below:a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements regarding the photic zone of an aquatic ecosystem is/are correct? It is the lowest layer of the aquatic ecosystem, where light penetration is restricted. Both photosynthesis and respiration activities take place in this region.Select the correct answer using the code given below:a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'B'. Can you explain this answer?.
Solutions for Which of the following statements regarding the photic zone of an aquatic ecosystem is/are correct? It is the lowest layer of the aquatic ecosystem, where light penetration is restricted. Both photosynthesis and respiration activities take place in this region.Select the correct answer using the code given below:a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for UPSC.
Download more important topics, notes, lectures and mock test series for UPSC Exam by signing up for free.
Here you can find the meaning of Which of the following statements regarding the photic zone of an aquatic ecosystem is/are correct? It is the lowest layer of the aquatic ecosystem, where light penetration is restricted. Both photosynthesis and respiration activities take place in this region.Select the correct answer using the code given below:a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Which of the following statements regarding the photic zone of an aquatic ecosystem is/are correct? It is the lowest layer of the aquatic ecosystem, where light penetration is restricted. Both photosynthesis and respiration activities take place in this region.Select the correct answer using the code given below:a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'B'. Can you explain this answer?, a detailed solution for Which of the following statements regarding the photic zone of an aquatic ecosystem is/are correct? It is the lowest layer of the aquatic ecosystem, where light penetration is restricted. Both photosynthesis and respiration activities take place in this region.Select the correct answer using the code given below:a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of Which of the following statements regarding the photic zone of an aquatic ecosystem is/are correct? It is the lowest layer of the aquatic ecosystem, where light penetration is restricted. Both photosynthesis and respiration activities take place in this region.Select the correct answer using the code given below:a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Which of the following statements regarding the photic zone of an aquatic ecosystem is/are correct? It is the lowest layer of the aquatic ecosystem, where light penetration is restricted. Both photosynthesis and respiration activities take place in this region.Select the correct answer using the code given below:a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice UPSC tests.
|
|
Explore Courses for UPSC exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup