UPSC Exam  >  UPSC Questions  >  Consider the following statements regarding i... Start Learning for Free
Consider the following statements regarding intertidal zone. 
  1. An intertidal zone is extremely stable in moisture, temperature and salinity throughout the year leading to a stable ecosystem.
  2. The zone is completely submerged by the tide once or twice every day.
Which of the above statements is/are correct?
  • 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?
Explore Courses for UPSC exam

Similar UPSC Doubts

A species that exertsan influence out of proportion to its abundance in an ecosystem is called a keystone species. The keystone species may influence both the species richness of communities and the flow of energy and materials through ecosystems. The sea star Pisaster the flow of energy and materials through ecosystems. The sea star Pisaster ochraceus, which lives in rocky intertidal ecosystems on the Pacific coast of North America, is also an example of a keystone species. Its preferred prey is the mussel Mytilus californianus . In the absence of sea- stars, these mussels crowd out other competitors in a broad belt of the intertidal zone. By consuming mussels, sea star creates bare spaces that are taken over by a variety of other species. A study at the University of washington demonstrated the influence of Pisaster on species richness by removing sea stars from selected parts of the intertidal zone repeatedly over a period of five years. Two major changes occured in the areas from which sea stars were removed. First, the lower edge of the 46. mussel bed extended farther down into the intertidal zone, showing that sea stars are able to eliminate mussels completely where they are covered with water most of the time. Second, and more dramatically, 28 species of animals and algae disappeared from the sea star removal zone. Eventually only Mytilus, the dominant competitor, occupied the entire substratum. Through its effect on competitive relationships, predation by Pisaster largely determines which species live in these rocky intertidal ecosystems.Q. With reference to the passage, consider the following statements : 1. Mussels-are generally the dominant species in intertidal ecosystems. 2. The survival of sea stars is generally determined by the abundance of mussels. Which of the statements given above is /are correct?

A species that exertsan influence out of proportion to its abundance in an ecosystem is called a keystone species. The keystone species may influence both the species richness of communities and the flow of energy and materials through ecosystems. The sea star Pisaster the flow of energy and materials through ecosystems. The sea star Pisaster ochraceus, which lives in rocky intertidal ecosystems on the Pacific coast of North America, is also an example of a keystone species. Its preferred prey is the mussel Mytilus californianus . In the absence of sea- stars, these mussels crowd out other competitors in a broad belt of the intertidal zone. By consuming mussels, sea star creates bare spaces that are taken over by a variety of other species. A study at the University of washington demonstrated the influence of Pisaster on species richness by removing sea stars from selected parts of the intertidal zone repeatedly over a period of five years. Two major changes occured in the areas from which sea stars were removed. First, the lower edge of the 46. mussel bed extended farther down into the intertidal zone, showing that sea stars are able to eliminate mussels completely where they are covered with water most of the time. Second, and more dramatically, 28 species of animals and algae disappeared from the sea star removal zone. Eventually only Mytilus, the dominant competitor, occupied the entire substratum. Through its effect on competitive relationships, predation by Pisaster largely determines which species live in these rocky intertidal ecosystems.Q. Which of the following is/are implied by the passage ? 1. Mussels are always hard competitors for sea stars.2. Sea stars of the Pacific coast have reached the climax of their evolution. 3. Sea stars constitute an important component in the energy flow in intertidal ecosystem. Which of the statements given above is/are correct?

Top Courses for UPSC

Consider the following statements regarding intertidal zone. An intertidal zone is extremely stable in moisture, temperature and salinity throughout the year leading to a stable ecosystem. The zone is completely submerged by the tide once or twice every day.Which of the above statements is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'B'. Can you explain this answer?
Question Description
Consider the following statements regarding intertidal zone. An intertidal zone is extremely stable in moisture, temperature and salinity throughout the year leading to a stable ecosystem. The zone is completely submerged by the tide once or twice every day.Which of the above statements is/are correct?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 Consider the following statements regarding intertidal zone. An intertidal zone is extremely stable in moisture, temperature and salinity throughout the year leading to a stable ecosystem. The zone is completely submerged by the tide once or twice every day.Which of the above statements is/are correct?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 Consider the following statements regarding intertidal zone. An intertidal zone is extremely stable in moisture, temperature and salinity throughout the year leading to a stable ecosystem. The zone is completely submerged by the tide once or twice every day.Which of the above statements is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'B'. Can you explain this answer?.
Solutions for Consider the following statements regarding intertidal zone. An intertidal zone is extremely stable in moisture, temperature and salinity throughout the year leading to a stable ecosystem. The zone is completely submerged by the tide once or twice every day.Which of the above statements is/are correct?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 Consider the following statements regarding intertidal zone. An intertidal zone is extremely stable in moisture, temperature and salinity throughout the year leading to a stable ecosystem. The zone is completely submerged by the tide once or twice every day.Which of the above statements is/are correct?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 Consider the following statements regarding intertidal zone. An intertidal zone is extremely stable in moisture, temperature and salinity throughout the year leading to a stable ecosystem. The zone is completely submerged by the tide once or twice every day.Which of the above statements is/are correct?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 Consider the following statements regarding intertidal zone. An intertidal zone is extremely stable in moisture, temperature and salinity throughout the year leading to a stable ecosystem. The zone is completely submerged by the tide once or twice every day.Which of the above statements is/are correct?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 Consider the following statements regarding intertidal zone. An intertidal zone is extremely stable in moisture, temperature and salinity throughout the year leading to a stable ecosystem. The zone is completely submerged by the tide once or twice every day.Which of the above statements is/are correct?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 Consider the following statements regarding intertidal zone. An intertidal zone is extremely stable in moisture, temperature and salinity throughout the year leading to a stable ecosystem. The zone is completely submerged by the tide once or twice every day.Which of the above statements is/are correct?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

Top Courses for UPSC

Explore Courses
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