TOLERANCE

BIOLOGY SSS 2 SECOND TERM

WEEK FOUR

TOLERANCE

PERFORMANCE OBJECTIVE

Students should be able to;

1. Discuss why living things possess a range of tolerance to the environmental factors
2. List the biotic factors that impose tolerance on organism
3. Depict tolerance range with graphs
4. Explain ecological niche

CONTENT

The ecological definition of tolerance refers to the niche breadth, or the range of conditions that an organism can withstand. the ability of an organism to survive when subjected to abiotic factors or biotic factors is called tolerance.

Organisms can survive only within certain maximum and minimum limits concerning each environmental factor such as water, light and temperature. These are called the tolerance limits and the range in between these limits is the tolerance…