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2010 · Q65Environment & EcologyEcosystems & Ecology Conceptseasy

Some species of plants are insectivorous. Why ?

  1. (a)Their growth in shady and dark places does not allow them to undertake sufficient photosynthesis and thus they depend on insects for nutrition.
  2. (b)They are adapted to grow in nitrogen deficient soils and thus depend on insects for sufficient nitrogenous nutrition.
  3. (c)They cannot synthesize certain vitamins themselves and depend on the insects digested by them.
  4. (d)They have remained in that particular stage of evolution as living fossils, a link between autotrophs and heterotrophs.
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Official answer(b) They are adapted to grow in nitrogen deficient soils and thus depend on insects for sufficient nitrogenous nutrition.

2026 · Q33Environment & EcologyEcosystems & Ecology Conceptsmoderate

Which of the following best explain(s) the rationale for protecting mangrove ecosystems in the context of climate resilience ? 1. Mangroves reduce tidal energy and store freshwater, making them ideal sites for paddy cultivation in saline estuarine belts. 2. Their salt-sensitive roots filter seawater, making mangroves key to converting coastal land into freshwater aquaculture zones. 3. By withstanding tidal surges and offering biomass resources, mangroves function both as natural bio-shields and livelihood bases for rural communities. Select the answer using the code given below :

  1. (a)1 only
  2. (b)1 and 2
  3. (c)2 and 3
  4. (d)3 only
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Official answer(d) 3 only

2023 · Q10Environment & EcologyEcosystems & Ecology Conceptseasy

With reference to India’s projects on connectivity, consider the following statements : 1. East-West Corridor under Golden Quadrilateral Project connects Dibrugarh and Surat. 2. Trilateral Highway connects Moreh in Manipur and Chiang Mai in Thailand via Myanmar. 3. Bangladesh-China-India-Myanmar Economic Corridor connects Varanasi in Uttar Pradesh with Kunming in China. How many of the above statements are correct?

  1. (a)Only one
  2. (b)Only two
  3. (c)All three
  4. (d)None
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Official answer(d) None