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If a tropical rainforest is removed, it does not regenerate quickly as compared to a tropical deciduous forest. This is because

(a)

The soil of the rainforest is deficient in nutrients.

(b)

Propagules of the trees in a rainforest have poor viability.

(c)

The rain forest species are slow growing.

(d)

Exotic species invade the fertile soil of the rainforest.

Correct Answer

(a)

Explanation

Tropical rainforest soils are often nutrient-poor due to leaching, which slows down regeneration compared to tropical deciduous forests.

Microtheme: Biodiversity —
6 questions asked in Prelims in the past.

  1. [2023] Consider the following statements:
    1. In India, the Biodiversity Management Committees are key to the realization of the objectives of the Nagoya Protocol.
    2. The Biodiversity Management Committees have important functions in determining acces and benefit sharing, including the power to levy collection fees on the access of biological resources within its jurisdiction.
    Which of the statements given above is/are correct?

    • (a) 1 only
    • (b) 2 only
    • (c) Both 1 and 2
    • (d) Neither 1 nor 2
    Correct Answer: (C) Both 1 and 2
  2. [2011] If a tropical rainforest is removed, it does not regenerate quickly as compared to a tropical deciduous forest. This is because

    • (a) The soil of the rainforest is deficient in nutrients.
    • (b) Propagules of the trees in a rainforest have poor viability.
    • (c) The rain forest species are slow growing.
    • (d) Exotic species invade the fertile soil of the rainforest.
    Correct Answer: (A) The soil of the rainforest is deficient in nutrients.
  3. [2011] Three of the following criteria have contributed to the recognition of western Ghats, Sri Lanka and Indo-Burma regions as hotspots of biodiversity: 1. Species richness 2. Vegetation density 3. Endemism 4. Ethno-botanical importance 5. Threat perception 6. Adaptation of flora and fauna to warm and humid conditions Which three of the above are correct criteria in this context?

    • (a) 1, 2 and 6 only
    • (b) 2, 4 and 6 only
    • (c) 1, 3 and 5 only
    • (d) 3, 4 and 6 only
    Correct Answer: (C) 1, 3 and 5 only
  4. [2011] The Himalayan Range is very rich in species diversity. Which one among the following is the most appropriate reason for this phenomenon?

    • (a) It has a high rainfall that supports luxuriant vegetative growth.
    • (b) It is a confluence of different biogeographical zones.
    • (c) Exotic and invasive species have not been invasive species and have not been introduced in this region.
    • (d) It has less human interference.
    Correct Answer: (B) It is a confluence of different biogeographical zones.
  5. [2010] Consider the following statements :
    1. Biodiversity hotspots are located only in tropical regions.
    2. India has four biodiversity hotspots i.e., Eastern Himalayas, Western Himalayas, Western Ghats and Andaman and Nicobar Islands.
    Which of the statements given above is/are correct ?

    • (a) 1 only
    • (b) 2 only
    • (c) Both 1 and 2
    • (d) Neither 1 nor 2
    Correct Answer: (D) Neither 1 nor 2
  6. [2009] Consider the following regions :
    1. Eastern Himalayas
    2. Eastern Mediterranean region
    3. North-western Australia
    Which of the above is/are Biodiversity Hotspot(s) ?

    • (a) 1 only
    • (b) 1 and 2 only
    • (c) 2 and 3 only
    • (d) 1,2 and 3
    Correct Answer: (B) 1 and 2 only