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IAS Previous Year Environment Questions – Lecture – 3 – STHAAPNA Series

Sthapna - Static MCQs for GS - Subject - environment lecture 3

Hey, aspiring Officer!

The most probable questions are waiting for your response. Attempt the quiz and get the best questions and their explanation.

There are 5 questions.
There is no time limit.
2 marks are awarded for each right answer.
There is no negative marking in the Daily Quiz.
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Wish you good luck!

Consider the following: [2011, 2014]

  1. Photosynthesis
  2. Respiration.
  3. Decay of organic matter
  4. Volcanic action.

Which of the above add carbon dioxide to the carbon cycle on earth?

(a) 1 and 4 only

(b) 2 and 3 only

(c) 2, 3 and 4 only

(d) 1 and 4


Which of the following adds / add nitrogen to the soil? [2013]

  1. Excretion of urea by animals
  2. Burning of coal by man
  3. Death of vegetation

Select the correct answer using the codes given below.

(a)1 only

(b)2 and 3 only

(c) 1 and 3 only

(d) 1, 2 and 3


In the grasslands, trees do not replace the grasses as a part of an ecological succession because of [2013]

(a) insects and fungi

(b) limited sunlight and paucity of nutrients

(c) water limits and fire

(d) None of the above


Lichens, which are capable of initiating ecological  succession even on a bare rock, are actually a symbiotic association of [2014]

(a)algae and bacteria

(b)algae and fungi

(c) bacteria and fungi

(d) fungi and mosses


Which one of the following is a useful functional association between fungi and the roots of higher plants? [1999]

(a) Biofertilizer

(b) Coralloid root

(c) Lichen

(d) Mycorrhiza


If you walk through countryside, you are likely to see some birds stalking alongside the cattle to seize the insects disturbed by their movement through grasses. [2014]

Which of the following is/are such bird/birds?

1.Painted Stork

2.Common Myna

  1. Black-necked Crane

Select the correct answer using the code given below.

(a)1 and 2

(b)2 only

(c) 2 and 3

(d) 3 only

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