1
NEET 2024 (Re-Examination)
MCQ (Single Correct Answer)
+4
-1

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

A
Saprophytes are not given any place in ecological pyramids
B
It assumes a simple food chain, that almost never exists in nature
C
It accommodates a food web
D
It does not take into account the same species belonging to two or more trophic levels
2
NEET 2024
MCQ (Single Correct Answer)
+4
-1

In an ecosystem if the Net Primary Productivity (NPP) of first trophic level is $$100 x\left(\mathrm{kcal} \mathrm{~m}^{-2}\right) \mathrm{yr}^{-1}$$, what would be the GPP (Gross Primary Productivity) of the third trophic level of the same ecosystem?

A
$$\frac{x}{10}\left(\mathrm{kcal} \mathrm{~m}^{-2}\right) \mathrm{yr}^{-1}$$
B
$$x\left(\mathrm{kcal} \mathrm{~m}^{-2}\right) \mathrm{yr}^{-1}$$
C
$$10 x\left(\mathrm{kcal} \mathrm{~m}^{-2}\right) \mathrm{yr}^{-1}$$
D
$$\frac{100 x}{3 x}\left(\mathrm{kcal} \mathrm{~m}^{-2}\right) \mathrm{yr}^{-1}$$
3
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Change Language

Match List - I with List - II

List - I List - II
(A) Hydrarch succession (I) Gradual change in the species composition
(B) Xerarch succession (II) Faster and climax reached quickly
(C) Ecological succession (III) Lichens to mesic conditions
(D) Secondary succession (IV) Phytoplankton to mesic conditions

Choose the correct answer from the options given below :

A
(A)-(IV), (B)-(II), (C)-(III), (D)-(I)
B
(A)-(III), (B)-(I), (C)-(IV), (D)-(II)
C
(A)-(I), (B)-(IV), (C)-(II), (D)-(III)
D
(A)-(IV), (B)-(III), (C)-(I), (D)-(II)
4
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Change Language

The amount of nutrients such as carbon, nitrogen, potassium and calcium present in the soil at any given time is referred to as :

A
Standing state
B
Standing crop
C
Humus
D
Detritus
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