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IBPS RRB Officer Scale 1 Science & Technology — practice questions

Explore 30 free Science & Technology questions in IBPS RRB Officer Scale 1 Environment. Open each question or exercise to read its content, reference answers and available explanation.

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Science & Technology questions and exercises with answers

Showing questions 1–30 of 30.

A region grows more than 50,000 different strains of rice. This variety is an example of:Read the answer and worked solution →India, with deserts, mangroves, coral reefs and alpine meadows, shows greater ___ diversity than Norway.Read the answer and worked solution →Species richness rises with area up to a limit; this relation was first noted by:Read the answer and worked solution →Out of every 10 animal species on Earth, roughly how many are insects?Read the answer and worked solution →After nine were added to the initial 25, the world's biodiversity hotspots total:Read the answer and worked solution →India has 2.4 percent of the world's land but what share of global species diversity?Read the answer and worked solution →India is counted among how many mega diversity countries of the world?Read the answer and worked solution →Species diversity generally does what as you move from the equator towards the poles?Read the answer and worked solution →The rain forest with the greatest biodiversity on earth is the:Read the answer and worked solution →The rivet popper hypothesis compares an ecosystem to an airplane and species to its:Read the answer and worked solution →Which animal group appears most vulnerable to extinction?Read the answer and worked solution →Present extinction rates compared with pre-human times are:Read the answer and worked solution →The most important cause driving species to extinction is:Read the answer and worked solution →The Nile perch introduced into Lake Victoria wiped out more than 200 species of:Read the answer and worked solution →Parthenium, Lantana and water hyacinth are examples of:Read the answer and worked solution →When a host fish goes extinct, its unique parasites die out too. This is called:Read the answer and worked solution →Saving the entire forest to save the tiger is an example of:Read the answer and worked solution →Biodiversity hotspots are regions with very high species richness and a high degree of:Read the answer and worked solution →Which hotspot covers part of India?Read the answer and worked solution →Sacred groves in the Khasi and Jaintia Hills are found in:Read the answer and worked solution →Zoological parks and botanical gardens serve which kind of conservation?Read the answer and worked solution →The Earth Summit that adopted the Convention on Biological Diversity was held in 1992 at:Read the answer and worked solution →Catch the Evil QuartetRead the answer and worked solution →Pop the levels of biodiversityRead the answer and worked solution →Find the real termRead the answer and worked solution →Slice the biodiversity wordsRead the answer and worked solution →In situ or ex situRead the answer and worked solution →Extinct, invasive or hotspotRead the answer and worked solution →Type the numberRead the answer and worked solution →Biodiversity bingoRead the answer and worked solution →

Worked practice questions

A region grows more than 50,000 different strains of rice. This variety is an example of:

  1. Genetic diversity
  2. Species diversity
  3. Ecosystem diversity
  4. Latitudinal diversity
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Correct answer: A. Genetic diversity

1. All the strains belong to one species, rice. 2. The variation is at the level of genes. 3. That is genetic diversity. _Source: syllabus Biology, Chapter 15, Biodiversity and Conservation._

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India, with deserts, mangroves, coral reefs and alpine meadows, shows greater ___ diversity than Norway.

  1. Seasonal
  2. Ecosystem
  3. Genetic
  4. Molecular
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Correct answer: B. Ecosystem

1. Each of these is a different ecosystem. 2. Norway has far fewer ecosystem types. 3. So India has greater ecosystem diversity. _Source: syllabus Biology, Chapter 15, Biodiversity and Conservation._

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Species richness rises with area up to a limit; this relation was first noted by:

  1. Alexander von Humboldt
  2. Charles Robert Darwin
  3. Robert May of Oxford
  4. Paul Ehrlich of Stanford
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Correct answer: A. Alexander von Humboldt

1. The observation came from South American explorations. 2. The relation is a rectangular hyperbola. 3. It was made by Alexander von Humboldt. _Source: syllabus Biology, Chapter 15, Biodiversity and Conservation._

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