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Outline two ways by which the number of earthworms in grassland could be increased - Leaving Cert Agricultural Science - Question (b) - 2016
Question (b)
Outline two ways by which the number of earthworms in grassland could be increased. Explain how earthworms are beneficial in grassland. Name the phylum to which ea... show full transcript
Worked Solution & Example Answer:Outline two ways by which the number of earthworms in grassland could be increased - Leaving Cert Agricultural Science - Question (b) - 2016
Step 1
Outline two ways by which the number of earthworms in grassland could be increased.
Answer
- Add Organic Matter: Incorporating organic materials such as compost, manure, or leaf litter can enhance soil fertility, providing a nourishing habitat for earthworms.
- Improve Soil Drainage: Creating channels or aerating the soil can improve drainage, contributing to a healthier environment for earthworms, reducing the danger of soil compaction.
Step 2
Explain how earthworms are beneficial in grassland.
Answer
Earthworms contribute significantly to grassland ecosystems by improving soil structure and fertility. Their burrowing activity aerates the soil, promoting better water infiltration and drainage. Furthermore, as earthworms decompose organic matter, they enhance nutrient cycling, enriching the soil with essential minerals which boosts plant growth.
Step 3
Step 4
Draw a diagram of an earthworm and label three parts.
Answer
The diagram of an earthworm should depict its cylindrical and segmented body. The three labeled parts might include:
- Mouth: Located at the anterior end, used for ingestion.
- Clitellum: A thickened, glandular section of the body involved in reproduction.
- Anus: Located at the posterior end, used for expelling waste.