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Questions and Answers
What is ecology the study of?
Interactions among organisms and between the organism and its physical environment.
Which of the following is NOT a major biome?
Stenothermal organisms can tolerate a wide range of temperatures.
False
What factor is considered the second most important for desert organisms?
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What is the ultimate source of light and temperature on land?
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What are the two types of organisms based on salinity tolerance?
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____ is important for photosynthesis in plants.
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The UV spectrum is harmless to many organisms.
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What is the ecological term for the distinct role and position of an organism in its environment?
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What factors lead to the formation of different habitats?
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Which organisms use variations in light intensity for their activities?
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Study Notes
Ecology
- The study of interactions between organisms and their environment.
- Four levels of biological organization: organisms, populations, communities, and biomes.
Organism and its Environment
- Physiological Ecology - Study of adaptations for survival and reproduction in specific environments.
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Abiotic Factors:
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Temperature
- Earth's rotation and tilt cause variations in temperature and seasons.
- Major biomes like deserts, rainforests, and tundras are formed due to these variations.
- Stenothermal: Organisms tolerant of narrow temperature ranges.
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Water
- Essential for life.
- Desert organisms have adaptations to conserve water.
- Water quality (pH, chemical composition, salinity) is critical for aquatic organisms.
- Euryhaline: Organisms tolerant of a wide range of salinity.
- Stenohaline: Organisms tolerant of a narrow range of salinity.
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Light
- Essential for photosynthesis in plants.
- Small forest plants are adapted to low light conditions.
- Photoperiodism (timing of flowering) is influenced by sunlight.
- Animals use variations in light intensity for foraging, reproduction, and migration.
- Sunlight is the ultimate source of energy on land.
- Deep ocean environments are devoid of sunlight, with minimal energy available.
- The spectral quality (UV spectrum) of solar radiation impacts life.
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Soil
- Properties are influenced by climate.
- Supports plant growth and provides a habitat for many organisms.
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Temperature
Habitat
- Regional and local variations within a biome create different habitats.
- Life exists in diverse and extreme habitats, including deserts, rainforests, deep-sea trenches, and high mountain tops.
- Our intestines provide a habitat for numerous microbes.
Niche
- An organism's unique role and position in its environment.
- Every organism tolerates specific conditions and utilizes specific resources.
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Description
Explore the intricate relationships between organisms and their environment with this quiz on ecology. Delve into the four levels of biological organization and the role of abiotic factors like temperature, water, and light in shaping organism adaptations for survival. Perfect for students studying ecological principles.
