Previous year MCQs

General science UPPSC 2022 GS-I
Question

Which of the following trees is dangerous for environment ?

Answer & Solution

Answer: (Detailed Solution Below)

Option B: Eucalyptus

Detailed Solution:

The correct answer is “Eucalyptus”.
The tree that is often considered potentially dangerous for the environment among the options given is Eucalyptus.
1) High Water Consumption: Eucalyptus trees are known to consume a significant amount of water, which can lead to reduced groundwater levels, especially in areas with limited water resources. This makes them unsuitable for arid or semi-arid regions where water conservation is crucial.

2) Soil Depletion: Eucalyptus trees can deplete soil nutrients rapidly. They release certain allelopathic chemicals that inhibit the growth of nearby plants, impacting local biodiversity by reducing the variety of native plants.

3) Impact on Biodiversity: Due to their aggressive growth and allelopathic properties, Eucalyptus plantations can disrupt local ecosystems by pushing out native flora, which can have cascading effects on local fauna and biodiversity.

4) Fire Hazard: Eucalyptus trees contain oils that are highly flammable. In hot and dry conditions, they can become fire hazards, leading to wildfires that spread rapidly.

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