The diagram shows the structure of Amoeba - Leaving Cert Biology - Question 3 - 2010
Question 3
The diagram shows the structure of Amoeba.
(a) Name the parts labelled A, B and C.
A ................................................................................. show full transcript
Worked Solution & Example Answer:The diagram shows the structure of Amoeba - Leaving Cert Biology - Question 3 - 2010
Step 1
Name the parts labelled A, B and C.
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Answer
A = pseudopods (false feet);
B = contractile vacuole;
C = food vacuoles.
Step 2
To which kingdom does Amoeba belong?
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Answer
Amoeba belongs to the kingdom Protista or the kingdom Protista.
Step 3
Is the cell of Amoeba prokaryotic or eukaryotic?
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Answer
The cell of Amoeba is eukaryotic.
Step 4
Give a reason for your answer to part (c)
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Answer
Amoeba cells contain membrane-bound organelles, including a nucleus, which are characteristic of eukaryotic cells.
Step 5
Give one function of A in Amoeba.
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Answer
A (pseudopods) is involved in feeding and movement.
Step 6
1. Give one function of B in Amoeba.
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Answer
B (contractile vacuole) functions in osmoregulation by expelling excess water.
Step 7
2. Suggest one reason why B is more active in freshwater amoeba than in marine amoeba.
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Answer
Freshwater environments are more hypotonic compared to the internal environment of the amoeba, leading to increased water intake and requiring more active expulsion by the contractile vacuole.
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