Complete the table below in relation to the organisms shown in the photographs - Leaving Cert Agricultural Science - Question 4 - 2012
Question 4
Complete the table below in relation to the organisms shown in the photographs.
(i) Name of organism
(ii) Phylum
(iii) One characteristic of a member of the phylu... show full transcript
Worked Solution & Example Answer:Complete the table below in relation to the organisms shown in the photographs - Leaving Cert Agricultural Science - Question 4 - 2012
Step 1
Name of organism
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Answer
The organism in the first photograph is the Liver fluke (Fasciola hepatica), and the organism in the second photograph is the Garden snail (Lymnaea.)
Step 2
Phylum
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Answer
The Liver fluke belongs to the phylum Platyhelminthes, while the Garden snail is classified under the phylum Mollusca.
Step 3
One characteristic of a member of the phylum
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A characteristic of a member of the phylum Platyhelminthes is that they are tripoblastic, bilaterally symmetrical, and often hermaphroditic, with a dorsoventrally flattened or flat body. In contrast, members of the Mollusca phylum feature a radula for feeding and have a soft-bodied structure.
Step 4
Importance in agriculture
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Liver flukes can cause significant losses in livestock, leading to reduced weight gains and overall health issues. Additionally, garden snails can impact agriculture by feeding on foliage, potentially causing damage to crops.
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