Chapter 7: Living in the Environment: environmental factors and their influence Questions
1. Why is a Polar bear found living in a cold icy place and a fish found living in water, but not in other environments? Because it is their habitat in which they are adapted to. It has certain adaptations to allow it to survive in that environment and resources are available in the environment. 2. Give the definitions for the following words (the glossary at the back of the book may help you: a. Habitat – living place of an organism
b. adaptations – characteristics of an organism that helps it to survive and reproduce in their environment c. biota – combined flora and fauna of a region
d. biosphere - the regions of the surface and atmosphere of the earth or another planet occupied by living organisms e. biomes – areas of the Earth linked by a common feature
3. How do structural, behavioural and physiological adaptations differ from each other? Give an example of each. Structural adaptation is the physical feature of an organism, an example is the fur and hair of an organism. Behavioural is the way an organism acts, an example is hibernation. Physiological is how the body of an organism works an example is sweat production and dormancy.
4. What is the difference between abiotic and biotic factors? Give four examples of each.
Abiotic is non-living factors and biotic is living factors that affects an organism. Examples of abiotic factors are weather, water, shelter, humidity and examples of Biotic factors are predators, prey, parasites, pathogens etc.
5. What is the difference between the tolerance range and the optimum range for abiotic factors (Figure 7.1 may help)?
Tolerance range is the outer limits in which the organism feels comfortable and optimum range is where the best conditions are.
6. When does an organism suffer physiological stress? Give an example? An organism...
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