Abiotic Factors - Temperature, Water, Light, Soil - Unsolved Practice Set
Chapter: Organisms and Populations | Topic: Abiotic Factors Temperature Water Light Soil
ABIOTIC FACTORS - TEMPERATURE, WATER, LIGHT, SOIL - UNSOLVED PRACTICE SET
Topic: Abiotic Factors Temperature Water Light Soil
Multiple Choice Questions
Q1. Abiotic factors in an ecosystem refer to:
- All living organisms present
- The non-living physical and chemical factors of the environment, such as temperature, water, light, and soil
- Only plant species present
- Only interactions between predators and prey
Q2. Organisms that can tolerate and survive a wide range of temperatures are described as:
- Stenothermal
- Eurythermal
- Stenohaline
- Euryhaline
Q3. Organisms that can tolerate only a narrow range of salinity are described as:
- Eurythermal
- Stenothermal
- Stenohaline
- Euryhaline
Q4. Light is an important abiotic factor for plants mainly because it is essential for:
- Respiration only
- Photosynthesis
- Water absorption only
- Seed formation, with no other role
Q5. Soil characteristics, such as texture, pH, and mineral composition, primarily influence:
- Only animal behaviour, with no effect on plants
- The type and distribution of vegetation that can grow in a particular area
- Atmospheric temperature only
- Ocean currents
Short Answer Questions
Q6. Define abiotic factors, and name any three examples.
Q7. Differentiate between eurythermal and stenothermal organisms, giving an example of each type if possible.
Q8. Why is light considered a critical abiotic factor, especially for photosynthetic organisms?
Q9. Mention any two soil properties that can influence the type of vegetation found in a particular region.
Long Answer Questions
Q10. Discuss temperature and water as abiotic factors, explaining how variations in these factors affect the distribution and survival of organisms.
Q11. Explain the significance of light and soil as abiotic factors, describing how each influences plant growth and ecosystem composition.
APPLICATION / ANALYSIS
Q12. A species of fish is found to survive well in both freshwater rivers and slightly saline coastal waters, while another closely related fish species can only survive in a very narrow range of salinity. Using your understanding of abiotic factors, classify each fish species and explain your reasoning.
Q13. A farmer notices that a particular crop grows poorly in one part of his field despite adequate water and sunlight, while it thrives in another part of the same field. Suggest, using your understanding of abiotic factors, what soil-related difference between the two areas might explain this variation in crop growth.