Ecosystem · Question 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

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

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

1. Carnivores
2. Parasites
3. Predators
4. Herbivores

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

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

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

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

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

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

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