Question

Differentiate between the following terms by giving suitable examples in about 120

words:

(a) Primary succession and secondary succession
​

Answer 1

a

Primary Succession is defined as the type of ecological succession, which occurs or start from the barren, uninhabited and unoccupied areas, such as the newly formed pond, rock, dunes, etc., while such kind of succession, which occurs in the area where there was the existence of life previously but got abandoned due to natural disturbances like deforestation, natural calamities (flood, earthquake, tsunami), the field with no vegetation is known as Secondary Succession.

2.Primary Succession occurs in the lifeless or barren area while Secondary Succession occurs in an area, which has been recently got deprive of life and was previously inhabited.

3.Time taken for the completion of the process in Primary Succession is more than 1000 years while Secondary Succession takes place around 200 for its completion.

4.There is the absence of soil and humus at the starting of the process, and the condition is not suitable for sustaining life, but in Secondary Succession soil and humus are present, along with some organisms.

5.Intermediary seral and pioneer community are present in number in Primary Succession whereas the presence of intermediary seral community few in numbers and pioneer community gets develops from the migrants and the previous occupants.

6.In the beginning, the environment is unfavorable for the growth in Primary Succession but in case of Secondary Succession, the environment is favorable, since the beginning of development

.

Explanation:

Answer 2

Differentiate between Primary succession and secondary succession:

Primary Succession:

• In primary succession, new islands are formed with no soil present beneath sometimes.
• It occurs in the "lifeless or barren area".

Example: Sand mound formed after wind blows in desert areas.

Secondary Succession:

• On the other hand, secondary succession organisms are present which makes the succession faster.
• The presence of soil since the beginning of succession is an important feature of secondary succession.

Example: Volcanic eruption may result in secondary succession.

Learn more about Primary succession and secondary succession.

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Why is secondary succession much quicker than primary succession?

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