Question

Which species has rapid generation time?

• A. Endogenic
• B. Epigenic
• C. Anecics
• D. All of the above

Answer 1

Answer: (B)

Anecic species : Represented by species, which build permanent vertical burrows by coating them with their mucons that penetrates deep into soil e.g., Lumbricus. Endogeic species build horizontal burrows in upper mineral soil. Only these species contribute maximum to humus e.g., Pheretima.
Epigeic have highest generation time and are found in top loose soil and we can easily use them for making vermicompost, e.g., Eisenia fetida.

Earthworms plays different roles in ecosystems. Their feeding and burrowing activities incorporate organic residues into the soil thereby enhancing the process of decomposition, humus formation, nutrient cycling, and soil structural development.

Thus, the correct answer is option B.