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Ecosystems and Energy Flow — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYEcosystems and Energy Flow4 Marks
Question
Distinguish between : Primary and secondary succession.
✓

Answer

Primary successionSecondary succession
1. The primary succession starts in the area where no living organisms ever existed.1. The secondary succession starts in an area which has lost all the living organisms once existed.
2. Areas where primary succession starts are bare rock, newly formed pond, newly cooled lava, etc.2. Abandoned farm, cut or burnt forest, flooded land’, etc. are areas where secondary succession begins.
3. Primary succession is a very slow process.3. Secondary succession is comparatively a faster process.

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