Corals are animals that live on the sea bed - Edexcel - GCSE Biology - Question 4 - 2013 - Paper 1
Question 4
Corals are animals that live on the sea bed.
The photograph shows some species of coral.
(a) Corals can reproduce sexually, releasing sperm cells into the water.
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Worked Solution & Example Answer:Corals are animals that live on the sea bed - Edexcel - GCSE Biology - Question 4 - 2013 - Paper 1
Step 1
Suggest the mass of DNA that would be present in an unfertilised egg cell of the same species.
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Answer
The mass of DNA in an unfertilised egg cell of the same species would be equal to that of a sperm cell, which is 0.5 picogram. This is because both the sperm and egg cells are gametes and contain half the genetic material needed for fertilization.
Step 2
Complete the sentence by putting a cross (✗) in the box next to your answer.
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Answer
The correct term that describes the number of chromosomes in an egg or sperm cell is c. haploid. This refers to cells that contain a single set of chromosomes, which is characteristic of gametes.
