Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →
Sign in

Ecosystem question

2025 · Q3
Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
  1. PYQ Library
  2. /NEET
  3. /Biology
  4. /Ecosystem
  5. /2025 · Q3

Ecosystem question

2025 · Q3

NEETBiologyEcosystemMCQ+4 / −1

Given below are two statements:

Statement I: The primary source of energy in an ecosystem is solar energy.

Statement II : The rate of production of organic matter during photosynthesis in an ecosystem is called net primary productivity (NPP).

In the light of the above statements, choose the most appropriate answer from the options given below:

  1. A
    Statement I is correct but statement II is incorrect
  2. B
    Statement I is incorrect but statement II is correct
  3. C
    Both statement I and statement II are correct
  4. D
    Both statement I and statement II are incorrect
View written solutionFree

Correct answer: A

The primary source of energy in an ecosystem is solar energy. Gross primary productivity in an ecosystem refers to the rate at which organic matter is produced during photosynthesis. Therefore, while the first statement is correct, the second one is incorrect because it mistakenly defines net primary productivity instead of gross primary productivity.

Next

More from Ecosystem

  • Who is known as the father of Ecology in India?2025 · MCQ
  • Given below are two statements: Statement I: In ecosystem, there is unidirectional flow of energy of sun from producers to consumers. Statement II: Ecosystems are exempted from 2nd law of thermodynamics. In the light of the above…2025 · MCQ
  • Which of the following is the unit of productivity of an Ecosystem?2025 · MCQ
  • In an ecosystem if the Net Primary Productivity (NPP) of first trophic level is 100x(kcal m−2)yr−1, what would be the GPP (Gross Primary Productivity) of the third trophic level of the…2024 · MCQ
  • Consider the pyramid of energy of an ecosystem given below: If T4​ is equivalent to 1000 J, what is the value at T1​ ? Includes diagram2024 · MCQ
  • Which one of the following is not a limitation of ecological pyramids?2024 · MCQ
  • The amount of nutrients such as carbon, nitrogen, potassium and calcium present in the soil at any given time is referred to as :2023 · MCQ
  • The species of plants that plays a vital role in controlling the relative abundance of other species in a community is called _________.2023 · MCQ