NEET · Biology · STD 12 - 12. ecosystem

Match List I with List II :
List I List II
A. Productivity I. Gross primary productivity minus respiration losses
B. Net primary productivity II. Rate of formation of new organic matter by consumers
C. Gross primary productivity III. Rate of biomass production
D. Secondary productivity IV. Rate of production of organic matter during photosynthesis

A A-III, B-I, C-IV, D-II
B A-I, B-II, C-III, D-IV
C A-I, B-III, C-IV, D-II
D A-III, B-I, C-II, D-IV

Verified Solution

Answer & Solution

Correct Answer

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

Step-by-step Solution

Detailed explanation

(A) A-III, B-I, C-IV, D-II
Productivity is defined as the rate of biomass production.
Gross primary productivity (GPP) of an ecosystem is the rate of production of organic matter during photosynthesis.
Net primary productivity (NPP) is the gross primary productivity minus respiration losses \((R),\)which is the available biomass for the consumption to heterotrophs.
Secondary productivity is defined as the rate of formation of new organic matter by consumers.
Therefore, the correct matching is A-III, B-I, C-IV, D-II.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

Select the correct statements regarding cell membrane in eukaryotic cell.
A. Membrane of human RBCs has approximately 52% protein.
B. Major phospholipids are arranged in a bilayer.
C. Extensions of the plasma membrane into the cell form mesosomes.
D. Tails towards the inner part of lipids are hydrophobic and thus protected from aqueous medium.
E. Glycocalyx is present on the outer surface of the plasma membrane.
Choose the correct answer from the options given below :

NEET 2026 Hard

Match List \(I\) with List \(II\).

List \(I\)	List \(II\)
\(A\). Cartilaginous Joint	\(I\). Between flat skull bones
\(B\). Ball and Socket Joint	\(II\). Between adjacent vertebrae in vertebral column
\(C\). Fibrous Joint	\(III\). Between carpal and metacarpal of thumb
\(D\). Saddle Joint	\(IV\). Between Humerus and Pectoral girdle

Choose the correct answer from the options given below:

NEET 2023 Medium

Explore more questions on app

From NEET

Explore more questions on app

List I	List II
A. Productivity	I. Gross primary productivity minus respiration losses
B. Net primary productivity	II. Rate of formation of new organic matter by consumers
C. Gross primary productivity	III. Rate of biomass production
D. Secondary productivity	IV. Rate of production of organic matter during photosynthesis