1
IAT (IISER) 2022
MCQ (Single Correct Answer)
+4
-1
Consider the following biomes: Tropical Rainforest $(P)$; Tundra $(Q)$; Desert $(R)$ and Coastal zone $(S)$. The most probable order of Net Primary Productivity of these biomes is
A
$\mathrm{P}>\mathrm{Q}>\mathrm{S}>\mathrm{R}$
B
$P>S>Q>R$
C
$Q>P>S>R$
D
$R>Q>S>P$
2
IAT (IISER) 2020
MCQ (Single Correct Answer)
+4
-1

The following word diagram depicts a food chain in a forest.

$$ \text { Trees (Aspen, willow) } \rightarrow \text { Herbivore (Elk) } \rightarrow \text { Predator (Wolf) } $$

Which is the most likely outcome of depletion in predator population?

A
Increased browsing by the herbivores stimulates the plant growth leading to increased primary productivity
B
Overgrowth of herbivore population causing reduction in tree populations and therefore, if the process continues the entire ecosystem will breakdown
C
No change in the ecosystem as the herbivore and the tree populations will continue to maintain equilibrium
D
Overgrowth of herbivore population without any change in the remaining part of the ecosystem
IAT (IISER) Subjects
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