Question on: JAMB Biology - 2005

Secondary succession is much faster than primary succession because

pioneer colonizers are more in number

soil is already present

secondary seres require less nutrients

species competition is increased

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Correct Option: A

Secondary succession is usually much quicker than primary succession for the following reasons:

There is already an existing seed bank of suitable plants in the soil.<br />

Root systems undisturbed in the soil, stumps and other plant parts from previously existing plants can rapidly regenerate.<br />

The fertility and structure of the soil has also already been substantially modified by previous organisms to make it more suitable for growth and colonization.