What type of ecological succession occurs when an abandoned slash-and-burn cassava farmland is left fallow to regrow natural vegetation?
Answer and explanation
Correct answer: D. secondary ecological succession
- Step 1: Secondary succession occurs on areas where an existing community has been cleared or disturbed, but where pre-existing fertile soil and seed banks remain intact. Step 2. Weeds appear first, followed by shrubs and secondary forest trees. Answer: secondary ecological succession. Why not the others: Primary succession starts on bare sterile rock or sand without soil; hydrarch starts in deep water; xerarch starts on arid bare rock.
Practise more Genetics, Heredity, Evolution and Ecology.
Free questions with an explanation for every one, and full timed NECO Senior School Certificate Examination mock tests.
More Genetics, Heredity, Evolution and Ecology questions
- In a cross between two heterozygous tall pea plants (Tt × Tt), what is the expected phenotypic ratio among the offspring according to Mendel…
- In a dihybrid cross between two plants heterozygous for seed shape and seed color (RrYy × RrYy), what phenotypic ratio is predicted by the l…
- When pure-breeding red four o'clock flowers (Mirabilis jalapa) are crossed with pure-breeding white flowers, all F1 offspring bear pink flow…
- A man with blood group AB marries a woman with blood group O. What are the possible blood groups of their biological children?
- In humans, sickle cell hemoglobin (HbS) is inherited as a codominant allele. If two carrier parents with sickle cell trait (HbA HbS × HbA Hb…
- Why is sex-linked red-green color blindness substantially more prevalent among human males than among females?