Differentiate between primary and secondary succession and provide one example of each.
Answer
Verified652.5k+ views
Hint: Ecological succession is the process of evolution of structure of the biological species. It is a gradual change. It is a predictable and inevitable process of nature.
Complete Answer:
Note:There are two types of succession- primary and secondary succession. The secondary succession follows a major disturbance such as fire or flood. When succession reaches a climax which produces a stable community. This state of equilibrium is called a climax community.
Complete Answer:
| PRIMARY SUCCESSION | SECONDARY SUCCESSION |
| This type of succession begins in new habitats or lifeless areas. | This type of succession begins in the areas which were previously inhabited. |
| The plants and animals first colonize a lifeless habitat such as the areas which are devoid of soil. | The plants and animals recolonize a habitat after a disturbance like landslide, wildfire etc. |
| There is absence of humus as there is no soil in starting. | Presence of humus due to previous occupied place. |
| Takes `1000 years or more | Takes around 50-200 years. |
| An unfavourable environment since starting | From beginning the environment is favourable |
| Occurs in an area without any initial vegetation | Occurs in an area with initial vegetation. |
| This type of succession is initiated either by biological factor or an external agent. | This type of succession is initiated by an external factor. |
| The pioneer species in primary succession are mostly lichens followed by algae, fungi. | The pioneer species in this succession is mostly grasses. |
| No previous community is present.It takes a longer time.Examples- bare rock, ponds, deserts. Formation of new ecosystem after volcano, nuclear explosion. | Previous community is present.It takes a shorter time.Examples- the succession after fire, harvesting or the renewal after disease outbreak. |
Note:There are two types of succession- primary and secondary succession. The secondary succession follows a major disturbance such as fire or flood. When succession reaches a climax which produces a stable community. This state of equilibrium is called a climax community.
Recently Updated Pages
What is BLO What is the full form of BLO class 8 social science CBSE
Explain the Treaty of Vienna of 1815 class 10 social science CBSE
10 examples of friction in our daily life
Draw a diagram of nephron and explain its structur class 11 biology CBSE
Write structures of the following compounds i 2 Chloro3methylpentane class 11 chemistry CBSE
A Paragraph on Pollution in about 100-150 Words
Trending doubts
Draw a labelled sketch of the human eye class 12 physics CBSE
Which are the Top 10 Largest Countries of the World?
Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE
Draw ray diagrams each showing i myopic eye and ii class 12 physics CBSE
Which is the correct genotypic ratio of mendel dihybrid class 12 biology CBSE
What is the Full Form of PVC, PET, HDPE, LDPE, PP and PS ?