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Ecosystem · Question 2

NEET (UG) 2026MatchingMedium📈 Topic in 50% papers+4−1
1

Match List I with List II :

  1. A-III, B-I, C-II, D-IV
  2. A-I, B-II, C-III, D-IV
  3. A-III, B-I, C-IV, D-II
  4. A-I, B-III, C-IV, D-II

Answer

(3) A-III, B-I, C-IV, D-II

Solution

As per NCERT:

Productivity ⇒ rate of biomass production ⇒ A-III

Net primary productivity ⇒ NPP = GPP − R (gross primary productivity minus respiration losses) ⇒ B-I

Gross primary productivity ⇒ rate of production of organic matter during photosynthesis ⇒ C-IV

Secondary productivity ⇒ rate of formation of new organic matter by consumers ⇒ D-II

∴ A-III, B-I, C-IV, D-II

Answer: (3)

NEET (UG) 2026

Keep practising — Ecosystem

2

Ecological pyramids represent the relationship between the organisms at different trophic levels and they are generally inverted for :

  1. Pyramid of number in grassland
  2. Pyramid of energy in pond ecosystem
  3. Pyramid of biomass in grassland
  4. Pyramid of biomass in sea
NEET (UG) 2026
3

Which of the following are primary consumers in a food chain?

  1. Carnivores
  2. Parasites
  3. Predators
  4. Herbivores
RE-NEET (UG) 2026
4

Which of the following statements are correct?

  1. B and C only
  2. A, B and C
  3. A and B only
  4. A and C only
RE-NEET (UG) 2026
5

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

  1. Statement I is correct but statement II is incorrect
  2. Statement I is incorrect but statement II is correct
  3. Both statement I and statement II are correct
  4. Both statement I and statement II are incorrect
NEET (UG) 2025
6

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

  1. Statement I is correct but statement II is incorrect
  2. Statement I is incorrect but statement II is correct
  3. Both statement I and statement II are correct
  4. Both statement I and statement II are incorrect
NEET (UG) 2025
7

Which of the following is the unit of productivity of an Ecosystem?

  1. kcal m-3
  2. (kcal m-2) yr-1
  3. g m-2
  4. kcal m-2
NEET (UG) 2025
8

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 same ecosystem?

  1. x10 ( kcal m-2 ) yr-1
  2. x ( kcal m-2 ) yr-1
  3. 10x ( kcal m-2 ) yr-1
  4. 100x3x ( kcal m-2 ) yr-1
NEET (UG) 2024
9

Consider the pyramid of energy of an ecosystem given below: [figure] If T4 is equivalent to 1000 J, what is the value at T1 ?

  1. 1000010 J
  2. 1000010 4 J
  3. 10,000 J
  4. 10,00,000 J
RE-NEET (UG) 2024
10

Which one of the following is not a limitation of ecological pyramids?

  1. Saprophytes are not given any place in ecological pyramids
  2. It assumes a simple food chain, that almost never exists in nature
  3. It accommodates a food web
  4. It does not take into account the same species belonging to two or more trophic levels
RE-NEET (UG) 2024
11

Identify the correct statements : Choose the correct answer from the options given below :

  1. B, C, D only
  2. C, D, E only
  3. D, E, A only
  4. A, B, C only
NEET (UG) 2023

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