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Biodiversity Levels - Genetic, Species, Ecosystem - Unsolved Practice Set

Class 12

Chapter: Biodiversity and Conservation | Topic: Biodiversity Levels Genetic Species Ecosystem

Study Material.
Class 12

BIODIVERSITY LEVELS - GENETIC, SPECIES, ECOSYSTEM - UNSOLVED PRACTICE SET

Topic: Biodiversity Levels Genetic Species Ecosystem

Time: 30 mins | Marks: 30 | Difficulty: Medium

Multiple Choice Questions

Q1. Biodiversity refers to:

  1. Only the total number of animal species on Earth
  2. The variety and variability of life forms found on Earth, at genetic, species, and ecosystem levels
  3. Only plant diversity within a single forest
  4. The total human population of a region

Q2. Variation in genes within a single species, such as different rice varieties grown in India, is an example of:

  1. Species diversity
  2. Genetic diversity
  3. Ecosystem diversity
  4. None of these

Q3. The variety of different species found within a particular geographical region is referred to as:

  1. Genetic diversity
  2. Species diversity
  3. Ecosystem diversity
  4. Habitat diversity

Q4. The variety of habitats, ecological processes, and communities found across different regions, such as forests, deserts, and wetlands, represents:

  1. Genetic diversity
  2. Species diversity
  3. Ecosystem diversity
  4. None of these

Q5. India's numerous traditional rice varieties, each showing slightly different characteristics, is commonly cited as an example of:

  1. Species diversity
  2. Genetic diversity
  3. Ecosystem diversity
  4. Biomagnification

Short Answer Questions

Q6. Define biodiversity, and name the three levels at which it is typically studied.

Q7. What is genetic diversity? Give one example.

Q8. What is species diversity? Give one example.

Q9. What is ecosystem diversity? Give one example.

Long Answer Questions

Q10. Discuss the three levels of biodiversity - genetic, species, and ecosystem - explaining how each contributes to the overall diversity of life on Earth.

Q11. Explain why studying biodiversity at multiple levels, rather than focusing on species count alone, gives a more complete picture of an ecosystem's health.

APPLICATION / ANALYSIS

Q12. A researcher studying a single mango orchard in India documents dozens of different mango cultivars, each with slightly different taste, size, and colour, all belonging to the same species. Identify which level of biodiversity this scenario represents, and explain your reasoning.

Q13. A conservationist is comparing the biodiversity of two regions: one contains a single type of habitat with many different species, while the other contains multiple different habitat types (forest, wetland, grassland) each with fewer species. Explain how comparing these two regions requires considering more than one level of biodiversity.


Total: 30 Marks | Time: 30 mins

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