Figure 4 shows fossils in different layers of rock - Edexcel - GCSE Biology - Question 2 - 2023 - Paper 1
Question 2
Figure 4 shows fossils in different layers of rock.
Which layer of rock is likely to contain the most recent fossils?
A layer A
B layer B
C layer C
D layer D
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Worked Solution & Example Answer:Figure 4 shows fossils in different layers of rock - Edexcel - GCSE Biology - Question 2 - 2023 - Paper 1
Step 1
Which layer of rock is likely to contain the most recent fossils?
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Answer
The most recent fossils are likely to be found in Layer A. In sedimentary rock, the layers are arranged with the oldest at the bottom and the most recent at the top. Since Layer A is at the top, it would contain the most recent fossils.
Step 2
Explain one difference between tool A and tools B, C and D.
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Answer
Tool A appears to be made from a different material compared to tools B, C, and D. Tool A is more primitive in shape, while tools B, C, and D demonstrate more advanced crafting techniques, suggesting they were made at a later stage in human tool-making evolution.
Step 3
Use words from the box to complete the sentences.
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Answer
Animals with the most desirable characteristics were bred together. This is called selective breeding.
Step 4
Which is the definition of a genome?
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Answer
The definition of a genome is C all the DNA of an organism. A genome encompasses all genetic material, including genes and non-coding sequences.
Step 5
Give one advantage of domesticating animals.
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One advantage of domesticating animals is that it allows for a reliable source of food, such as milk, meat, and eggs, which can sustain human populations.
