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GK24
Environment & EcologyMediumAsked in: NDA · NDA-I 2024, GAT

Identify the land biome on the basis of the given characteristics : 1. Their climates are characterised by high rainfall and temperatures that vary from cold to mild. 2. These forests contain primarily deciduous trees - including maple, oak, hickory and beechwood. 3. Raccoons, opossums, bats and squirrels are found in the trees. Select the correct land biome from the options given below :

  1. A.Tropical forest
  2. B.Temperate forest
  3. C.Boreal forest
  4. D.Mediterranean forest

Correct answer

B. Temperate forest

Explanation

The correct answer is B, Temperate forest. Mild to cold seasons, good rainfall, broad-leaved deciduous trees like maple and oak, and animals like raccoons and squirrels mark the temperate deciduous forest.

Temperate forests grow in the mid-latitudes, especially in eastern North America, western and central Europe and eastern Asia. They have four distinct seasons with warm summers and cold winters, and rainfall spread through the year. The trees shed their leaves in autumn to save water and energy during the cold months, which gives these forests their bright autumn colours. Maple, oak, hickory and beech are typical trees, and the forest floor is rich in leaf litter and fertile soil. Deer, raccoons, opossums, bats, squirrels and many birds live here.

A is wrong because tropical forests are hot all year with very heavy rain and evergreen trees. C is wrong because boreal forests, or taiga, are made of conifers like spruce and pine in very cold climates. D is wrong because Mediterranean forests have dry summers and wet winters with hardy evergreen shrubs and trees.

Exam tip: maple, oak, beech and autumn leaf fall = temperate deciduous forest; spruce and pine = taiga.

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Q1.Environment & EcologyAsked in: CDS · CDS-II 2024, GKMedium

Which of the following Ramsar Wetland sites is not situated in any of the Union Territories of India ?

  1. A.Hokera Wetland
  2. B.Point Calimere Wildlife and Bird Sanctuary
  3. C.Tsomoriri Lake
  4. D.Wular Lake
Show answer
Correct answer: B. Point Calimere Wildlife and Bird Sanctuary

Point Calimere, also called Kodiakkarai, lies in the Nagapattinam district of Tamil Nadu, a state, where the Coromandel Coast turns west towards Palk Strait.

Q2.Environment & EcologyAsked in: CDS · CDS-I 2018, GKHard

In which one of the following groups of States in India is the Integrated Coastal Zone Management (ICZM) Project being implemented as a pilot investment?

  1. A.Gujarat, Kerala and Goa
  2. B.Kerala, Karnataka and Andhra Pradesh
  3. C.Gujarat, Odisha and West Bengal
  4. D.Maharashtra, Andhra Pradesh and Tamil Nadu
Show answer
Correct answer: C. Gujarat, Odisha and West Bengal

The India Integrated Coastal Zone Management Project was launched by the Ministry of Environment and Forests in 2010 with World Bank support.

Q4.Environment & EcologyAsked in: CDS · CDS-II 2017, GKEasy

Statement I : Global warming signifies the rise in global surface temperature. Statement II : The increase of concentration of greenhouse gases in the atmosphere causes the rise in global surface temperature.

  1. A.Both the statements are individually true and Statement II is the correct explanation of Statement I
  2. B.Both the statements are individually true but Statement II is not the correct explanation of Statement I
  3. C.Statement I is true but Statement II is false
  4. D.Statement I is false but Statement II is true
Show answer
Correct answer: A. Both the statements are individually true and Statement II is the correct explanation of Statement I

Global warming is the long-term rise in the average temperature at the earth's surface, and it is driven mainly by the growing amount of greenhouse gases in the air, so Statement II explains Statement I. Sunlight warms the ground, which gives off heat as infrared radiation.

Q5.Environment & EcologyAsked in: NDA · NDA-I 2026, GATHard

Consider the following critical minerals : I. Neodymium II. Tellurium III. Dysprosium IV. Gallium Which of the above minerals are not used for the production of photovoltaic cells used in solar panels?

  1. A.I and IV
  2. B.II and III
  3. C.I and III
  4. D.II and IV
Show answer
Correct answer: C. I and III

Neodymium and dysprosium are rare earth elements used mainly in strong permanent magnets, not in solar cells, while tellurium and gallium are used in photovoltaic cells.